MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a...

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©1999 by Motorola, Inc., Radio Products Group 8000 W. Sunrise Boulevard Ft. Lauderdale, FL 33322 68P81080C41-B, Issued 03/99 MCS 2000 Mobile Radio Service Instructions Volume 2b VHF Frequency Range Specific

Transcript of MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a...

Page 1: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

©1999 by Motorola, Inc., Radio Products Group8000 W. Sunrise BoulevardFt. Lauderdale, FL 33322

68P81080C41-B, Issued 03/99

MCS 2000 Mobile Radio Service Instructions

Volume 2b

VHF Frequency Range Specific

Page 2: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Safety Summary

1

Safety Information

Every radio, when transmitting, radiates energy into the atmosphere which may, under certain conditions, cause the generation of a spark.

All users of vehicles fitted with radios should be aware of the following warnings:

Do not operate radio near flammable liquids or in the vicinity of explosive devices.

To ensure personal safety, please observe the following simple rules:

Check the laws and regulations on the use of two-way mobile radios in the areas where you drive. Always obey them. Also, when using your radio while driving, please:

• Give full attention to driving,

• Use hands-free operation, if available and

• Pull off the road and park before making or answering a call if driving conditions so require.

Airbag Warning

Installation of vehicle communication equipment should be performed by a professional installer/technician qualified in the requirements for such installations.

An air bag’s size, shape and deployment area can vary by vehicle make, model and front compartment configuration (e.g., bench seat vs. bucket seats). Contact the vehicle manufacturer’s corporate headquarters, if necessary, for specific air bag information for the vehicle make, model and front compartment configuration involved in your communication equipment installation.

LP Gas Warning

It is mandatory that radios installed in vehicles fuelled by liquefied petroleum gas conform to the National Fire Protection Association standard NFPA 58, which applies to vehicles with a liquid propane (LP) gas container in the trunk or other sealed off space within the interior of the vehicle. The NFPA58 requires the following:

VEHICLES EQUIPPED WITH AIR BAGSAn air bag inflates with great force. DO NOT place objects, including communication equipment, in the area over the air bag or in the air bag deployment area. If the communication equipment is improperly installed and the air bag inflates, this could cause serious injury.

Safety 0 Safety Summary Revision A, 12/96

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• Any space containing radio equipment shall be isolated by a seal from the space in which the LP gas container and its fittings are located.

• Removable (outside) filling connections shall be used.

• The container space shall be vented to the outside.

Anti-Lock Braking System (ABS) and Anti-Skid Braking System Precautions

Disruption of the anti-skid/anti-lock braking system by the radio transmitter may result in unexpected vehicle motion.

Motorola recommends the following radio installation precautions and vehicle braking system test procedures to ensure that the radio, when transmitting, does not interfere with operation of the vehicle braking system.

Installation Precautions1. Always provide as much distance as possible between braking modulator

unit and radio, and between braking modulator unit and radio antenna and associated antenna transmission line. Before installing radio, determine location of braking modulator unit in vehicle. Depending on make and model of vehicle, braking modulator unit may be located in trunk, under dashboard, in engine compartment, or in some other cargo area. If you cannot determine location of braking modulator unit, refer to vehicle service manual or contact a dealer for the particular make of vehicle.

2. If braking modulator unit is located on left side of the vehicle, install radio on right side of vehicle, and conversely.

3. Route all radio wiring including antenna transmission line as far away as possible from braking modulator unit and associated braking system wiring.

4. Never activate radio transmitter while vehicle is in motion and vehicle trunk lid is open.

Braking System Tests

The following procedure checks for the most common types of interference that may be caused to vehicle braking system by a radio transmitter.

1. Run vehicle engine at idle speed and set vehicle transmission selector to PARK. Release brake pedal completely and key radio transmitter. Verify that there are no unusual effects (visual or audible) to vehicle lights or other electrical equipment and accessories while microphone is NOT being spoken into.

2. Repeat step 1. except do so while microphone IS being spoken into.

3. Press vehicle brake pedal slightly just enough to light vehicle brake light(s). Then repeat step 1. and step 2.

4. Press the vehicle brake pedal firmly and repeat step 1. and step 2.

5. Ensure that there is a minimum of two vehicle lengths between front of

!W A R N I N G

!

Revision A, 12/96 Safety Summary Safety 1

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vehicle and any object in vehicle’s forward path. Then, set vehicle transmission selector to DRIVE. Press brake pedal just far enough to stop vehicle motion completely. Key radio transmitter. Verify that vehicle does not start to move while microphone is NOT being spoken into.

6. Repeat step 5. except do so while microphone IS being spoken into.

7. Release brake pedal completely and accelerate vehicle to a speed between 15 and 25 miles/25 and 40 kilometers per hour. Ensure that a minimum of two vehicle lengths is maintained between front of vehicle and any object in vehicle’s forward path. Have another person key radio transmitter and verify that vehicle can be braked normally to a moderate stop while microphone is NOT being spoken into.

8. Repeat step 7. except do so while microphone IS being spoken into.

9. Release brake pedal completely and accelerate vehicle to a speed of 20 miles/30 kilometers per hour. Ensure that a minimum of two vehicle lengths is maintained between front of vehicle and any object in vehicle’s forward path. Have another person key radio transmitter and verify that vehicle can be braked properly to a sudden (panic) stop while microphone is NOT being spoken into.

10. Repeat step 9. except do so while microphone IS being spoken into.

11. Repeat step 9. and step 10. except use a vehicle speed of 30 miles/50 kilometers per hour.

Safety 2 Safety Summary Revision A, 12/96

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LIST OF EFFECTIVE PAGES

MCS 2000 Mobile Radio Service Instructions

Volume 2b

VHF Frequency Range Specific Information

Motorola Publication Number 68P81080C41-B

Issue Dates of Original and Revised Pages are:

Original: April 1996Revision A: December 1996Revision B: March 1999

The Number of pages in this publication is 121 consisting of the following:

Page NumberRevision

LetterPage Number

RevisionLetter

Front cover B 17 through 38 A

Inside front cover (blank) O 39 through 49 B

Title B 50 O

Safety 0 through Safety 2 A 51 through 53 B

A and B A 54 O

i B 55 through 57 B

ii B 58 O

1 through 4 B 59 through 61 B

5 O 62 and 63 O

6 through 16 B 64 through 69 B

Revision B, 03/99 List of Effective Pages A

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s

LIST OF EFFECTIVE PAGES (Continued)

Note: A letter O in the Revision Letter column of the table above denotes an original page. Original pageARE NOT identified as such in the page footors except by the ABSENCE of a revision letter and date.

IMPORTANT ELECTROMAGNETIC EMISSION INFORMATION

In August, 1996, The Federal Communications Commission (FCC) adopted an updated safety standard for human exposure to radio frequency electromagnetic energy emitted by FCC regulated equipment. Motorola subscribes to this same updated safety standard for the use of its products.

In keeping with sound installation practice and to maximize radiation efficiency, a one-quarter (1/4) wave length antenna should be installed at the center of the vehicle roof. If it is necessary to mount the antenna on the vehicle's trunk lid, an appropriate 3db gain antenna should be used. This installation procedure will assure that vehicle occupants will be exposed to radio frequency energy levels lower than the limits specified in the standard adopted by the FCC in General Docket 79144.

To assure that radio frequency (RF) energy exposure to bystanders external to a vehicle is lower than that recommended by FCC adopted standard, transmit with any mobile radio only when bystanders are at least two (2) feet away from a properly installed externally mounted antenna for radios with less than 50 watts of output power, or three (3) feet away for radios with 50 watts or greater power.

Control Station Operation

In the event of Control Station operation, to assure operators and bystanders are exposed to radio frequency (RF) energy levels lower than the limits specified in the FCC adopted standard, the antenna should be installed outside of any building, but in no instance shall the antenna be within two feet (less than 50 watts power output) or within three feet (50 watts or higher power output) of station operators or bystanders.

70 and 71 O Questionnaire (Back) O

72 through 108 B Replacement PartsOrdering (Inside back cover)

O

Questionnaire (Front) O Back Cover B

Page NumberRevision

LetterPage Number

RevisionLetter

B List of Effective Pages Revision B, 03/99

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Table of Contents

- Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Backs Up Title Page

- List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

1- Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2- Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Block Diagram Level Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Receiver Detailed Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Front End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Intermediate Frequency (IF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Back End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Transmitter Detailed Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Synthesizer Detailed Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Power Amplifier (PA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Overall PA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13PA Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Controller Detailed Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Dc Power Control and Regulation Detailed Functional Description. . . . . . . . . . . . . . . . . . . . . . . 16

3 - Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4 - Reference Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

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List of Figures

Figure 1. VHF Radio Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. PA Power Control Simplified Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 3. Main Transceiver and Power Amplifier (PA) Board Interconnect . . . . . . . . . . . . . . . . . . 41

Figure 4. Main Transceiver Board Section Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Figure 5. PA Board Section Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 6. Schematic Diagram Hierarchy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Note: Troubleshooting charts are listed on page 19; Component location, schematic diagram, and parts list illustrations are listed on page 39.

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Introduction 1This publication (Service Manual Volume 2b for MCS 2000 Radios, Motorola Publication Number 68P81080C41) provides frequency-range specific information for 110-Watt MCS 2000 Radios that operate in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number 68P81083C20, which provides non-frequency-range-specific information for all MCS 2000 Radios.

Service personnel must have both Volume 1 and Volume 2b of the MCS 2000 Service Manual in order to have all service information for 110-Watt MCS 2000 VHF Range 1 and Range 2 Radios. In addition, for radios that are equipped with the Motorola SECURENET option, the SECURENET Option Service Manual, Motorola Stock Number 68P81080C25, is required.

There are several other Volume 2 service manuals (e, g., Volume 2a, 2c, 2d, 2e), which cover other models of the MCS 2000 Radio. Refer to Volume 1 of this service manual for a list of the publications related to operation and maintenance of all models of the MCS 2000 Radio, and the Motorola Stock Numbers for those documents.

Hereafter in this manual, the MCS 2000 Radio is referred to as the radio. The specific hardware portions of the radio covered in this volume of the service manual are as follows:

• Receiver Front End

• Receiver Intermediate Frequency (IF)

• Receiver Back End

• Synthesizer

• Power Amplifier

This volume of the service manual covers the following five topics for the specific hardware portions of the VHF radio listed above:

• Theory of operation

• Troubleshooting

• Component locations

• Parts lists

• Schematic diagrams

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The five topics listed above for the controller section and for the control heads are covered in Volume 1 of this service manual, Motorola Publication Number 68P81083C20.

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Theory ofOperation 2

This chapter provides theory of operation information for the radio. It starts with a block diagram level functional description of the entire radio. This is followed by a detailed functional description for the receiver and transmitter functions of the radio. (Theory of operation for the controller, dc power control and regulation, and operator interface functions for the radio are covered in Volume 1 of this service manual.)

Introduction The radio is composed of the following five major functions:

• Receiver

• Transmitter

• Controller

• Operator Interface (Control Head)

• Dc Power Control and Regulation

The radio consists of a main radio body and a control head. The main radio body contains two interconnected circuit card assemblies, a main transceiver board and a power amplifier (PA) board. The PA board is connected electrically to the (main) transceiver board with two connectors refered to as the 2-pin and 12-pin PA interconnects.

The operator interface function consists of the control head, which plugs into the main body of the radio. There are two different control head types: the Model II for the Model II Radio and the Model III for the Model III Radio. The two control heads are covered in their entirety in volume 1 of this service manual.

The radio is physically separated into six functional sections as follows:

• Receiver Front End

• Receiver Intermediate Frequency (IF)

• Receiver Back End [Zero Intermediate Frequency (ZIF)]

• Synthesizer

• Transmitter Power Amplifier (PA)

• Controller

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The controller section is further divided into two sub-sections: common controller; and dc power control and regulation. The mechanical layout of the transceiver board and the electrical interconnections between its sections are illustrated in Chapter 4.

As previously mentioned, the power amplifier for the transmitter is located on a physically separate circuit board that plugs into the main portion of the transceiver board via 2-pin and 12-pin PA interconnects.

The component location diagrams, parts lists, and schematic diagrams for the controller section of the transceiver board and for the control heads are located in Volume I of this service manual. The component location diagrams, parts lists, and schematic diagrams, for the other five physical sections of the transceiver board and for the PA board are located in this volume (Volume 2b).

Block Diagram Level Theory of Operation

The following discussion refers to the functional block diagram for the radio, Figure 1.

The receiver function of the radio detects, demodulates, amplifies, and outputs via the loudspeaker, radio signals picked up by the vehicle or fixed-station antenna. The radio signal input to the receiver from the antenna reaches the receiver via the antenna switch, which is located in the transmitter function of the radio. The radio signals picked up by the antenna are signals that have been rebroadcast by trunked or conventional repeaters, or that have been broadcast directly by other mobile or fixed station radios.

The receiver function of the radio consists of: the receiver front end section; the receiver intermediate frequency (IF) amplifier section; the receiver back end section; and the audio signal filter (ASFIC) and receiver audio power amplifier circuits in the controller section.

The receiver function of the radio uses the double conversion superheterodyne design to optimize image rejection and selectivity. The receiver front end section converts the receiver input signal to a first IF of 109.65 MHz. The frequency upon which the receiver operates is determined by a first local oscillator signal generated by the synthesizer section. For the purpose of this discussion, the synthesizer section is considered to be part of the transmitter function of the radio.

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Figure 1 . VHF Radio Functional Block Diagram

RECEIVER

RECEIVERF SIGNAL

RECEIVE RF SIGNAL

RECEIVERFRONT END

SECTION

RECEIVER IFAMPLIFIERSECTION

RECEIVERAUDIO AUDIO

SIGNALFILTER(ASFIC)

AUDIO PAENABLE

SQUELCHDETECT

RECEIVERAUDIO RECEIVER

AUDIO POWER

AMPLIFIER

RECEIVERBACK ENDSECTION(ZERO IF)

SQUELCH

FIRSTRECEIVERLOCALOSCILLATOR

2.1 MHzREFERENCEOSCILLATOR

IF

109.65 MHz

IF

109.65 MHz

LOUDSPEAKERP/O CONTROLLER SECTION (NOTE 1)

DC POWER CONTROL AND REGULATION

13.8VDCFROM VEHICLEBATTERY ORBASE STATIONPOWER SUPPLY

CONTROL ANDREGULATION

CIRCUITS

REGULATEDDC POWER

P/O CONTROLLER SECTION(NOTE 1)

TO TRANSCEIVER BOARD ANDCONTROL HEAD CIRCUITS

P/O CONTROLLERSECTION(NOTE 1)

AUDIOSIGNALFILTER(ASFIC)

AUDIOMODULATION

SIGNAL SYNTHESIZERSECTION

MEMORYFEEDBACK

CONTROL

SB9600DATA BUSACCESSORY

INPUTS ANDOUTPUTS

CENTRALPROCESSORUNIT (CPU)

SUPPORTLOGIC(SLIC)

RF POWERAMPLIFIER

TRANSMITRF SIGNAL ANTENNA

SWITCH

ANTENNA

TRANSMITTER POWER AMPLIFIER SECTION

FIRST RECEIVERLOCAL OSCILLATOR,2.1 MHzREFERENCE OSCILLATOR

TRANSMITTERINJECTION

SIGNAL SERIALPERIPHERALINTERFACE(SPI) BUS

AUDIO PAENABLE

TRANSMITTER

MICROPHONE

PUSH TOTALK (PTT)

OPERATORKEYBOARD,

PUSHBUTTONS,AND OTHERCONTROLS

MICROPHONEAUDIO

CONTROL HEADPROCESSOR

OPERATORDISPLAYDISPLAY DATA

1. REFER TO VOLUME 1 OF THIS SERVICE MANUAL FOR INFORMATION ABOUT CONTROLLER SECTION

NOTES:

2. REFER TO VOLUME 1 OF THIS SERVICE MANUAL FOR INFORMATION ABOUT CONTROL HEAD

OPERATOR INTERFACE (CONTROL HEAD - NOTE 2)

MAEPF-25513-O

P/O CONTROLLERSECTION (NOTE 1)

Theory of Operation 5

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The 109.65 MHz IF output signal from the receiver front end section passes through the receiver IF amplifier section where it is filtered and amplified. The 109.65-MHz output of the receiver IF amplifier section goes to the receiver back end section. In the receiver back end section, which contains the zero intermediate frequency (ZIF) integrated circuit (IC), the receiver IF signal is demodulated to produce receiver audio and squelch signals.

The receiver audio and squelch signal outputs from the receiver back end section are processed by the audio signal filter integrated circuit (ASFIC) in the controller section of the radio to generate receiver audio (filtered) and squelch detect signals. The filtering characteristics and other processes of the ASFIC are controlled by the central processor unit in the controller section.

The receiver audio signal (filtered) from the output of the ASFIC goes to the input of the receiver audio power amplifier circuit, which is located in the controller section of the radio. The receiver audio power amplifier circuit does not pass the receiver audio signal to the loudspeaker until it receives an audio PA enable signal from the controller section of the radio. The reason is that the receiver portion of the radio includes a squelch function, which prevents receiver noise from passing to the loudspeaker during periods of no signal reception.

The controller generates the audio PA enable signal based on such variables as the level of the received signal, the frequency channel, and the operating mode of the radio. When the audio PA enable signal is generated, the audio power amplifier (PA) is activated and passes the receiver audio signal to the loudspeaker.

The transmitter function of the radio produces a 110-Watt radio frequency output signal depending on the model of the radio. The radio frequency output signal is frequency modulated by an audio signal from the microphone or from another source such as a telephone keypad or handset.

The transmitter function of the radio consists of: the audio signal filter integrated circuit (ASFIC) in the controller section; the synthesizer section; and the transmitter power amplifier (PA) section. The ASFIC develops a modulation signal by amplifying an audio signal from the microphone, keypad, or handset. The synthesizer section generates a radio frequency carrier signal upon which the transmitter portion of the radio operates.The radio frequency carrier signal generated by the synthesizer section is frequency modulated in the synthesizer section by the modulation signal output from the ASFIC.

The frequency modulated output signal from the synthesizer section is amplified to the required 110-Watt power level by the transmitter PA section. The output of the transmitter PA section passes through the antenna switch and is radiated into space by the vehicle or fixed-station antenna.

The controller section of the radio contains a microprocessor that controls the radio in accordance with its built in programming as well as commands input manually by the radio operator. The radio operator inputs manual commands to the controller section using the pushbuttons and other controls located on the control head. In

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addition to its controlling functions, the controller section provides audio amplification of the audio output signal in the receiver function. It also contains squelch detect circuitry based on a buffered discriminator signal from the Zero Intermediate Frequency Integrated Circuit (ZIF IC).

The operator interface function of the radio consists of: a microphone or the microphone portion of a telephone handset; a telephone keypad if used; the pushbuttons and other controls on the control head; and the digital and graphics displays on the control head. The pushbuttons and other controls on the control head provide digital commands to the controller section, and in some instances, hardwired commands to controlled circuits. The digital and graphics displays receive display data from the controller section. The control head contains its own microprocessor, which communicates with the controller section of the radio via an SB9600 serial digital data bus.

The DC power control and regulation function regulates and distributes to the various sections of the radio, DC power from the vehicle battery or fixed station power supply.

ReceiverDetailed Functional Description

The portion of the receiver function that is not part of the controller section, is composed of three sections: receiver front end; receiver If, and receiver back end.

Front End The following discussion is based on the schematic diagram for the receiver front end section located on pages 50 and 52 and the transmitter power amplifier (PA) section, page 69.

In the PA section, the radio signal from the antenna switch enters the high pass filter consisting of components C3587, C3588, C3598, L3582, and L3583. The high pass filter attenuates signals below the receiver passband, which is 136 to 174 MHz. The main purpose of the high pass filter is to attenuate undesired signals that could otherwise frequency multiply onto channel through non-linearities in the RF preamplifier. A PIN diode, CR3582, is inserted in the high pass filter. The diode helps to protect the receiver under transmit conditions through a forward bias provided by the keyed 9.1 voltage.

In the receiver section, the next stage is a two pole varactor tuned filter (R3301, C3306, C3307, C3308, C3347, C3304, CR3302, L3304, L3305, L3306, L3307). This filter provides more attenuation for out of band signals, and is tuned for each channel, so that undesired signals within the receiver passband are attenuated. The tuning voltage to the dual varactor (CR3302) is controlled by a digital-to-analog (D/A) converter in the controller section of the radio. The voltage can vary from 0 to 9 volts, depending on receive channel frequency. The varactors do not draw any appreciable amount of current in normal receive operation. The input to the varactor filter between L3304 and L3305 is a 50 ohm point, as is the RF connector on the radio.

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A pair of schottky diodes (CR3303) in the varactor filter limit the signal amplitude going to the RF preamplifier. The Schottky diodes, in addition to two PIN diodes (CR3304 and CR 3305), which are located before and after the preamplifier, provide strong signal protection to the receiver. The PIN diodes are biased through a variable DC voltage, which is provided by the ZIF AGC output. Each PIN diode is driven by an operational amplifier (U3400). The PIN diodes are completely off at low signal levels, begin to turn on at -85dBm, and are completely on for signals greater than -10dBm.

The RF preamplifier (composed of components Q3302, R3407, L3405, C3309, C3310, R3361, R3362, R3420, R3359, R3405, C3499, C3354) is a low noise amplifier which sets the noise figure of the receiver. It exists in both standard and preamplifier versions of the radio, but is configured differently in each version. Components L3342, R3353, C3353, C3311, Q3301, C3350, C3301, R3354, R3355, C3352, R3357, L3341, C3312 form an active bias circuit for the RF preamplifier . The preamplifier draws about 30 mA of current in normal operation and operates from a 9.3 volt supply.

A fixed filter, composed of components C3407, C3404, C3412, C3403, C3406, C3405, C3402, C3314, C3313, C3315, C3316, C3317, C3318, C3319, C3320, C3321, C3322, C3323, C3324, C3330, L3327, L3328, L3413, L3408, L3409, L3410, L3411, and L3412, follows the preamplifier. This filter attenuates signals below 136 MHz and above 174 MHz and provides most of the attenuation for signals at 109.65 MHz (radio IF). The filter’s main function is to provide rejection of signals at the image frequencies 355.3 MHz to 392.3 MHz. This is so the signals at these frequencies are not converted down to the 109.65 MHz IF by the mixer since the first LO uses frequencies of 245.65 MHz to 283.65 MHz.

The mixer section, composed of components Q3303, T3301, T3302, T3303, R3406, L3406, C3408, C3340, L3340, C3342, C3348, C3346, C3341, R3341, C3345, follows the fixed filter. The gallium arsenide double-balanced active mixer IC (Q3303) converts the incoming signal down to the 109.65 MHz IF using the first LO signal generated by the synthesizer. The frequency of the first LO is always 109.65 MHz higher than the incoming RF signal frequency. The incoming RF signal and the first LO reach the mixer IC through 4:1 baluns (T3301, T3302, T3303), so that the mixer can be biased from 5 volts and draw about 50 mA of current during normal operation. Under these conditions, the first LO power level is +11 to +12 dBm going into the mixer section when disconnected and terminated into 50 ohms.

The mixer IF termination diplexer (C3409, L3402, L3401, C3401, R3401) provides a wideband termination of approximately 50 ohms to the mixer, so that the mixer remains stable, fewer harmonics are produced by the mixer, and the mixer linearity remains high. The signal leaves the receiver front end via C3409 at 109.65 MHz and is applied to the receiver IF section. The output of the front end section at C3409 is a 50 ohm point.

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Intermediate Frequency (IF)

The following discussion is based on the schematic diagram for the receiver IF on pages 54 and 56.

The main functions of the IF section are to provide optimum selectivity, high signal gain, and low noise. The IF section consists of an IF amplifier, two crystal filters, a resistive pad (R5376, R5377, R5378) to provide impedance stabilization, a termination for a mixer in the UHF version of the radio (not included in the VHF versions of the radio), and a 12-Volt regulator used for the front end of the UHF version of the radio and also not included in the VHF versions.

The 12 volt regulator consists of R5390, Q5390, C5410, C5411, R5395, VR5371. Only one of the six components of the regulator (R5390) is included in the VHF versions of the radio. It couples tuning voltage, from a D/A converter in the controller section of the radio, to the varactor filter.

The UHF mixer termination (L5374, C5371, R5375, C5370, C5412) supplies the UHF mixer with an approximate 50 ohm match on UHF radios. Thus, R5375 should be the only component placed among these on VHF radios.

The two pole crystal filters (Y5378 and Y5379) provide some adjacent channel selectivity and spurious rejection further away from 109.65 MHz. This essentially rejects all signals except the on-channel 109.65 MHz signal that is to be demodulated.

The IF amplifier (Q5388, L5301, R5379, C5301, R5388, R5301, C5386, R5387, C5382) is actively biased (R5386, C5385, C5418, L5380, C5384, C5417, Q5382, R5385, R5384, R5382, L5399, C5383, C5415) by Q5382 and provides about 12 dB of gain with a noise figure of about 3 dB. It operates from 9.3 volts and draws about 30 mA of current in normal operation.

The other capacitors and inductors (C5377, C5376, L5376, C5378, C5379, L5377, L5378, C5380, C5381, L5379, C5375, C5387, C5303, C5372, L5381, C5388, C5389, L5382, C5390, L5383, C5391, C5302, L5302) provide an impedance match from the 50 ohm IF section input to the first crystal filter, from the first crystal filter to the IF amplifier, from the IF amplifier to the second crystal filter, and from the second crystal filter to the back end section.

A 150 ohm resistor (R5389) is used at the output of the IF section to provide impedance stabilization between the receiver back end section and the second crystal filter in the receiver IF section. The crystal filter input and output impedances are approximately 200 ohms.

Back End The following discussion is based on the schematic diagram for the receiver back end on pages 58 and 60.

The selectivity of the receiver back end is provided by programmable filters contained in the Zero Intermediate Frequency Integrated Circuit (ZIF IC). The filter bandwidth is adjusted automatically by the controller section of the radio to a bandwidth appropriate for the channel spacing. The ZIF IC (U3201) uses a type of direct conversion process, whereby the second LO frequency is very close to the

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frequency of the received IF signal. The voltage controlled oscillator (VCO) for the second LO in the synthesizer section of the radio, is phase-locked to the IF signal and tracks it with a small offset frequency.

In the absence of an IF signal, the second LO VCO searches for a signal. When an IF signal is received, the second LO VCO locks on the signal. The second LO VCO is a Vackar oscillator built around transistor Q3201. A varactor diode (CR3201) adjusts the frequency of the VCO according to feedback voltage from the ZIF IC. This voltage is normally in the range of 1.0 to 3.5 volts.

The feedback voltage is routed through a loop filter consisting of R3215, R3204, C3214, C3215, R3203 and C3233.

The ZIF IC performs several other functions. In addition to providing selectivity, it also provides limiting and FM demodulation functions. The ZIF IC provides a Received Signal-Strength Indicator (RSSI) and a squelch output. The RSSI is a DC voltage monitored by the controller section of the radio. It is used as a peak indicator during the bench tuning of the receiver front end varactor filter. The RSSI voltage is routed from the receiver back end to the controller. The RSSI voltage is available as an auxiliary output at pin 22 of the radio's accessory connector. RSSI is also routed to the option connector located in the controller section of the radio.

The ZIF IC also provides a squelch output on pin 29. The squelch signal is routed to shaping and detection circuits in the Audio Selective Filter Integrated Circuit (ASFIC) located in the controller section of the radio. The ASFIC has squelch detect and channel activity outputs that are routed to the controller section of the radio, which in turn controls audio muting and unmuting.

The ZIF IC has both internal and external automatic gain control (AGC) circuitry. This circuitry is used to prevent strong signal overload of the filter circuits in the ZIF IC. The external AGC circuitry is located in the receiver front end section.

In addition to the audio output signal, the receiver section provides a squelch signal output, which also is processed and used by the controller section of the radio to mute receiver output noise during periods of no signal reception.

Refer to the discussion under the title Receive Audio Circuits located in the theory of operation portion in volume I of this service manual.

Transmitter Detailed Functional Description

The transmitter function of the radio is distributed between the controller, synthesizer, and transmitter power amplifier (PA) sections as shown in figure 1.

The portion of the transmitter function physically located in the controller section is described in the controller section theory of operation located in volume I of this service manual. That portion includes the audio circuits that filter, amplify, and otherwise process the audio signal from the microphone and/or telephone handset.

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The portion of the transmitter function located in the synthesizer section of the radio is described in the synthesizer theory section located in the paragraphs that follow. The synthesizer section of the transmitter receives the amplified and processed audio signal from the controller section and produces a frequency modulated radio frequency carrier (injection) signal, which is input to the transmitter power amplifier (PA) section.

The remaining part of the transmitter function is physically located in the PA section. The description for this section follows the synthesizer section of this manual.

Synthesizer Detailed Functional Description

The synthesizer section of the radio generates the first local oscillator for the receiver portion of the radio. It also generates the transmitter RF carrier signal, which is frequency modulated by the amplified and processed audio signal from the output of the audio signal filter IC (ASFIC) in the controller section. The frequency modulated transmitter RF carrier signal is amplified by the transmitter PA section of the radio.

The following discussion is based on the schematic diagrams for the synthesizer section on pages 62 and 65 and VCOs located on pages 63 and 66.

The synthesizer section consists of a Pendulum reference oscillator (U3800) and a phase locked loop (PLL), which is made up of a fractional-n synthesizer integrated circuit (U3801), a loop filter, four voltage controlled oscillators (VCOs), buffer amplifiers, and a feedback amplifier.

The Pendulum reference oscillator contains a temperature compensated crystal, which has an oscillation frequency of 16.8 MHz. The output of the oscillator is applied to pin 14 of U3801 (U3801-14) via C3754 and R3750.The fractional-n synthesizer IC, U3801, consists of a prescaler, a programmable loop divider, control divider logic, a phase detector, a charge pump, an A/D converter for low frequency digital modulation, a balance attenuator to balance the low and high frequency analog modulation, a 13V positive voltage multiplier, a serial interface for control, and a super filter for the regulated 9.3 V.

Q3770 is a current amplifier for the super filter. The output voltage of the super filter drops from 9.3V to 8.5V. This filtered 8.5 Vdc supplies the voltage for the VCOs, their corresponding buffers, and the synthesizer charge pump resistor network (R3754). The synthesizer supply voltage is provided by the 5V regulator. The 2.1 MHz reference signal is generated by dividing down the signal of the reference oscillator after it is applied to U3801-14. In addition to the synthesizer section, the 2.1-MHz reference clock is also used by the controller and receiver back end sections of the radio.

To generate a high voltage that supplies the charge pump output stage at pin VEE2 (U3801-36), 13V is generated at CR3750-1 by the positive voltage multiplier circuitry(CR3750). This voltage multiplier is basically a diode capacitor network driven by two 180 degrees out of phase signals (U3801-8 and U3801-9).

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The serial interface (SRL) is connected to the controller section of the radio via the data line (U3801-2), clock line (U3801-3) and chip enable line (U3801-4). Proper enabling of these lines allows the controller section to load the fractional-n synthesizer IC.

All four VCOs are varactor tuned. The VCO frequencies are controlled by the voltage output of the loop filter. This control voltage ranges from about 2.5 to 10.5 Vdc. A small control voltage produces a lower frequency and a large control voltage produces a higher frequency.

There are two receive VCOs. These provide the first LO injection frequency for the receiver, which is 109.65 MHz above the carrier frequency. One VCO operates in the frequency range of 245 MHz to 260 MHz, and the other from 260 to 284 MHz. There are also two transmit VCOs, which generate the RF carrier. One operates in the frequency range of 136 to 155 MHz, and the other from 155 to 174 MHz.

The VCOs are activated by the auxiliary lines on the fractional-n synthesizer IC. Aux2 (U3801-38) and Aux4 (U3801-40) turn on the low and high receive VCOs, respectively. Aux1 (U3801-37) and Aux3 (U3801-39) turn on the low and high frequency transmit VCOs, respectively.

Following the receive VCOs is a buffer stage (Q3781), which provides gain and isolation. The output from the buffer stage passes through an attenuator network (R3773, R3771, C3830) and is then applied to the input of the feedback amplifier (Q3790). To close the synthesizer loop, the output of Q3790 is connected to the PREIN port of the synthesizer, (U3801-21). The buffer output also provides signal for the receiver LO injection.

The loop filter (which consists of R3760, R3761, R3762, C3775, C3776, C3778) transforms this current into a voltage. The output of the loop filter is sent to varactor diodes, which changes the frequency. In transmit mode, the voltage is applied to CR3756-3 for low VCO and CR3754-3 for the high VCO. In receive mode, the voltage is applied to CR3903-3 and CR3904 for the low VCO and CR3901-3 and CR3902 for the high VCO.

The audio signal from the controller is applied to fractional-n synthesizer IC, U3801-5. An A/D converter in the fractional-n synthesizer IC converts the low frequency portion of the analog modulating signal into a digital code, which is applied to a loop divider. This causes the carrier frequency to deviate.

A balanced attenuator is used to adjust the VCO deviation sensitivity to high frequency modulating signals. The output of the balanced attenuator is present at the MOD OUT (U3801-30). This signal then goes through a resistive divider and into a varactor diode (CR3753). This changes the total capacitance within the transmit VCOs and frequency modulates the carrier.

The transmit injection in the synthesizer consists of a buffer stage (Q3789) and two amplifier stages (Q3782, Q3784) whose main purpose is to maintain a constant output to drive the RF power

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amplifier and to provide isolation. The output of Q3782 is fed into the attenuator network and the feedback amplifier to close the loop.

The TX injection string is on only during the transmit mode with K9.1V.

Power Amplifier (PA)

Overall PA The following discussion is based on the schematic diagram for the power amplifier (PA) on page 69.

The transmitter PA consists of a four stage power amplifier followed by an antenna switch, harmonic filter and directional coupler. The four stages of the power amplifier are: controlled stage Q3500; pre-driver Q3520; driver U3540; and final amplifier U3560 and U3561.

In the transmit mode, the PA amplifies the TX injection signal (10 milliwatt amplitude via J3500-5) to a nominal 110 watt level at the antenna connector (J3503) while providing isolation to the receiver front end. In the receive mode, the PA provides a low loss path from the antenna connector to the RX interface connector (J3501). It also distributes A+ voltage from the A+ connector (J3502) to the main board (J3500-1).

The first PA stage (controlled stage) provides a gain that is a function of control voltage (PA_CNTRL, J3500-8). This control voltage comes from the power control section in the controller section of the radio. The control voltage magnitude depends on PA forward output power, temperature, and final amplifier current drain.

For a detailed explanation of the power control function, refer to the paragraph, titled 110-Watt PA Power Control Function, located at the end of this section.

The gain of the controlled stage device (Q3500) is determined by the collector current. The Q3500 BJT device and associated circuitry (Q3501, Q3502, R3509, R3505, R3506, R3507 and R3508) are best described as a voltage-controlled current source. This means that the Q3500 collector current is controlled by the control voltage magnitude. As the controlled voltage is increased, Q3500 collector current increases. By controlling the output power of the Q3500 Class A stage and in turn the input power of the following stages, the power control loop is able to regulate the transmitter output power.

The 200 milliwatt nominal output power of the controlled stage is transferred to the second (predriver) PA stage input by a bandpass match consisting of L3500, C3510, C3511, L3502 and a transmission line.

The predriver device (Q3520) is an enhancement mode N-channel MOSFET which requires a positive gate bias to set its quiescent drain current for proper Class A-B operation. The gate bias voltage is determined by a voltage divider resistor network consisting of K9.1 (J3500-11), R3521, R3522, R3523 and R3524. R3521 and R3523 are laser trimmed at the factory to achieve the desired drain current when the board is manufactured.

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Components R3525 and R3528 enhance the stability of device Q3520 at the lower operating frequencies. The network consisting of L3614, C3624, R3610 and L3613 provide A+ to the Q3520 drain. The nominal output power of the predriver stage is 3 watts. The device is heat-sinked to the chassis via H3520.

A matching network consisting of C3520, L3520, C3521, C3522 and a transmission line transfer power to the input of the third (driver) PA stage. The driver stage BJT (U3540) is operated Class C with L3540, L3541 and R3540 forming the zero volt DC base bias. A+ voltage is distributed to the U3540 collector by L3617, C3629, R3619 and L3616. The output power of the driver stage is nominally 30 watts. The heat sink for device U3540 is screwed directly to the chassis.

The final amplifier stage is the parallel combination of two RF transistors (U3560 and U3561). The matching network, from the U3540 collector to the bases of U3560 and U3561, utilizes several capacitors and transmission lines as part of a combination matching network and power splitter, providing approximately 15 watts to the base of each final stage device. Each final stage device is operated Class C with L3560, L3561, R3558 and R3560 forming the U3560 BJT base bias (L3564, L3565, R3559 and R3568 for U3561). Both final stage devices are screwed directly to the chassis. Resistors R3565, R3566, R3567 improve the division of drive power between the final stage devices. Both U3560 and U3561 utilize a series RLC feedback network to suppress parasitic oscillations.

The final stage output network serves the dual purpose of impedance matching and power combining for the two final stage devices. This network consists of coils L3566 and L3567, several capacitors, and several transmission lines and transfers approximately 125 watts to a 50 ohm circuit impedance point at junction of C3578 and CR3584.

R3562 and R3563 help balance the load impedances presented to the U3560 and U3561 collectors. A+ voltage is supplied to both final devices via L3611, L3612, R3616, C3620, C3623, VR3610 and the current sense resistor R3617. The transorb diode, VR3610, in conjunction with a spring contact in the chassis provides reverse polarity and over-voltage protection for the radio. Heat sinks H3560 and H3580 are used to channel heat from the PC board to the chassis.

The antenna switch utilizes PIN diodes to form a low loss, high isolation RF relay. During transmit, PIN diodes CR3584, CR3581, and CR3582 are forward biased by the K9.1 supply via L3580, R3582 and R3586. In this state, a low loss path exists from the final amplifier through CR3584 into the harmonic filter and at the same time provides protection to the receiver front end from excessive RF levels. During receive both diodes remain unbiased and provides a low loss path from the harmonic filter to the receiver front end.

Capacitors C3587 through C3589 and C3598, and inductors L3582 and L3583 form a high pass filter in the receive path to attenuate frequencies at half the intended RX frequency. Resistors R3580, R3581, R3584 and R3585 channel heat away from CR3584.

A low-pass harmonic filter, consisting of C3596, L3593, L3590, C3591, L3591, C3593, L3592 and C3594, follows the antenna switch. The

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filter's primary function is to attenuate harmonic energy generated by the amplifier stages, but also adds some selectivity for the receiver. R3590 and R3591 channel heat away from coil L3591. The filter is shielded via SH3590 and SH3591 to lessen the amount of harmonic energy bypassing the filter.

The directional coupler is the last circuit block before the antenna connector. The coupler is composed of a pair of parallel microstrip transmission lines, which form a forward power sensing directional coupler and detector. The output of the directional coupler and detector is a DC voltage proportional to the forward RF power output from the PA. Diode CR3600 rectifies the RF energy which appears across it. This voltage is then divided by R3601, RT3604, R3605, R3606 and R3607 and is routed back the power control circuit block (V_FORWARD, J3500-12) on the main board. The directional coupler circuit is shielded by SH3600 and SH3592 to lessen the amount of harmonic energy bypassing the harmonic filter.

PA Power Control The following discussion is based on the simplified schematic diagram for the PA power control function, Figure 2. The first (controlled) stage of the PA provides a gain that is a function of control voltage (PA_CNTRL, J3500-8). The control voltage is routed from the power control section in the controller section of the radio. The magnitude of the control voltage depends on PA forward power, PA temperature, and final amplifier current drain. The magnitude of the control voltage depends on PA forward power, PA temperature, final amplifier current drain, and radio A+ voltage.

The coupler detect voltage (V_FORWARD, J3500-12), which is proportional to PA forward power, is buffered and summed with PA_PWR_SET provided by the D/A converter (U0551). The resultant voltage level is compared with a reference voltage at U0550-4. Any voltage level difference between U0550-4, pins 9 and 10 causes an increase or decrease in PA_CNTRL, which results in a corresponding change in the V_FORWARD voltage level from the PA. The loop operates in this manner unless it is limited by one or more of the four protection mechanisms described below.

The first protection mechanism limits the maximum magnitude of the PA_CTRL voltage. The maximum allowable PA_CNTRL voltage is determined by PA_CNTRL_LIM (J3500-7). If PA_CNTRL_LIM increases to a level where CR0551 is forward biased, the voltage level at U0550-9 and U0550-4 is clamped and PA_CNTRL cannot increase any further. Control voltage limiting protects the power amplifier against being overdriven and foldback.

The next protection mechanism limits the maximum dc current input to the final devices (U3560 and U3561) in the PA. The dc input to the final devices is measured by the voltage drop across a series resistor (R3617). CURRENT_SENSE+ (J3500-2), the A+ side of R3617, is summed with CUR_LIM_SET from the D/A Converter (U0551). The sum is compared with CURRENT_SENSE- (J3500-10), the device side of R3617, at U0550-2.

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A change in the voltage level difference between U0550-2, pins 5 and 6 causes a corresponding increase or decrease at U0550-2, pin 7. If the U0550-2, pin 7 voltage increases to a level where CR0550 (diode 2-3) is forward biased, the voltage level at U0550-4, pin 9 is clamped and PA_CNTRL cannot increase any further. Thus if the voltage drop across R3617 in the PA increases due to increasing final stage current and the voltage at U0550-2, pin 7 increases to the clamping level, the transmitter is current limited. Current limiting protects the final amplifier stage from excessive current drain.

The third protection mechanism is temperature limiting. Thermistor RT3610, which is physically located near the final PA devices, determines the voltage level at U0550-1, pin 2. This level is compared with a set reference level at U0550-1, pin 3. If the voltage level difference at the input of U0550-1 results in an increase in the output voltage sufficient to forward bias CR0551 (diode 1-3), the voltage level at U0550-4, pin 9 is clamped and PA_CNTRL cannot increase any further. Temperature limiting protects the radio from reaching an excessive temperature.

The last protection mechanism is a high-temperature overvoltage protection circuit. This circuit protects the radio from excessive PA temperatures under conditions of high ambient temperature and high A+ voltage. The high-temperature overvoltage protection circuit consists of U3500, VR3611, Q3521 and the associated circuitry.

If the A+ voltage increases to a level where the voltage at pin 3 of U3500-1 exceeds a 5.6 volt reference set by VR3611 (A+ approximately 15.3 volts), the voltage at pin 1 of U3500-1 increases from its normal operating potential (ground) to a set voltage level. The set voltage level is routed to R3600, which applies a DC forward bias to coupler detector diode CR3600. This increases the detected voltage level for a given forward power level.

The power control circuits reduce the forward power to stabilize the loop. However, if the voltage across thermistor RT3610 is above approximately 4.5V, indicating a PA low temperature condition, the voltage at pin 14 of U3500-3 increases. This turns on Q3521 and thereby prevents the voltage at pin 1 of U3500-1 from increasing.

For a more detailed description and a schematic diagram, refer to the controller theory of operation in Volume 1 of this service manual.

Controller Detailed Functional Description

The theory of operation for the controller section of the radio is located in Volume 1 of this service manual.

Dc Power Control and Regulation Detailed Functional Description

The theory of operation for the dc power control and regulation section of the radio is located in Volume 1 of this service manual.

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Revision A, 12/96 17

DIRECTIONAL COUPLERAND DETECTOR

MINI-UHFANTENNA

CONNECTORJ303

ANTENNA

HARMONICFILTER

PA_TEMPJ3500-9

V_FORWARDJ3500-12

CURRENT_SENSE-J3500-10

CURRENT SENSERESISTOR

R3617THERMISTOR

RT3610

CURRENT_SENSE+J3500-2

PA _CNTRL_LIMJ3500-7

PA-CNTRLJ3500-8

R3513

R3514

PIN DIODEANTENNA SWITCHDRIVER

STAGE

FINAL AMPLIFIERSTAGE

PREDRIVERSTAGE

CONTROLLEDSTAGE

TX_INJJ3500-5FROM

SYNTHESIZERSECTION

K9.1VJ3500-11

A+J3502

125W

10mW 300mW 3W 30W

K9.1V

U3560

U3561

U3540

U0550-3

U0550-2

U0550-1

U0550-4

V_FORWARD

4.65VREFERENCE

VOLTAGE

PA_CNTL

PA_PWR_SET

V DRIVE

5

7

1

14

12

1, 2 3

9

8

10

CURRENT_SENSE+

6

31

3

CR0550

CR05502

3

2

CUR_LIM_SET

CURRENT_SENSE-

PA-TEMP

4.65VREFERENCE

VOLTAGE

MICRO-CONTROLLER

D/ACONVERTER

U0551

PA_PWR_SET

CUR_LIM_SET

Q3520Q3500

A+K9.1VK9.1V

A+

A+PA-CNTRL

HALF-FCFILTER

RX_INJ3501-1

TORECEIVER

FRONT ENDSECTION

+

+

+

+

+

110W VHF POWER AMPLIFIER SECTION

CONTROLLER SECTION

CR0551

MAEPF-25480-O

Figure 2. PA Power Control Simplified Schematic Diagram

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18 Revision A, 12/96

NOTES

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Troubleshooting 3This chapter contains the troubleshooting flowchart diagrams (Charts) listed below for the receiver, power amplifier, and synthesizer sections of the radio:

NOTE: Troubleshooting Charts number 1-1 through 1-13 are located in Volume 1 of this Service Manual, Motorola Publication Number 68P81083C20, because they are common to all models of the radio.

NOTE: Troubleshooting information and troubleshooting Charts for the SECURENET Option for the radio are located in the SECURENET Option Service Manual, Motorola Publication Number 68P81083C25.

• Overall Radio:

- Refer to Troubleshooting Chart 1-1 in Volume 1 of this service manual.

• Receiver:

- Troubleshooting Chart 2b-1, Receiver Front End - Page 21

- Troubleshooting Chart 2b-2, Receiver IF - Page 22

- Troubleshooting Chart 2b-3, Receiver Back End -Page 24

• Synthesizer:

- Troubleshooting Chart 2b-4, Synthesizer Deviation - Page 28

- Troubleshooting Chart 2b-5, Synthesizer Pendulum Oscillator - Page 29

- Troubleshooting Chart 2b-6, Synthesizer FAIL 001 - Page 30

- Troubleshooting Chart 2b-7, Synthesizer No Transmit - Page 31

- Troubleshooting Chart 2b-8, Synthesizer No or Low Transmitter Injection Signal - Page 32

- Troubleshooting Chart 2b-9, Synthesizer No or Low Receiver LO Signal - Page 33

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• Power Amplifiers:

- Troubleshooting Chart 2b-11, 110-Watt Power Amplifier No Power Output - Page 35

20 Troubleshooting Revision A, 12/96

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Revision A, 12/96

21

RFon R3406

OK?

≈12 dBSINAD?

Goto SynthesizerNo or Low LO

Chart #7E

Inject 109.65 MHzRF = -119.0 dBm

on C3348 Inject on ChannelRF = -113.5 dBm

on R3361

Inject on ChannelRF = -117.0 dBmon Pin 5 of T3302

Inject on ChannelRF = -121.0 dBm

on C3310

Goto Receiver-IFChart #5B

Check Fix Tuned

Filter Circuitry

Check Q3302DC Circuit

Check Q3302RF Circuitry

Check U3300and other

AGC Circuitry

Inject on ChannelRF = -119.0 dBm

on R3540

Check Varactor-TunedFilter Circuitry

Check Filter CircuitryBetween L3501

and C3589

Check Antennaand AntennaConnector

Inject on ChannelRF = -119.0 dBm

on R3620

Check Filter CircuitryBetween R3620

and L3590

Inject on ChannelRF = -120.0 dBm

on L3305

Yes

Yes

No

No

No

START

MAEPF-25498-A

≈12 dBSINAD?

Yes

≈12 dBSINAD?

Check Q3303Circuitry and BiasVoltage on T3303

Note: Mixer has≈ Zero Gain

Yes

No

≈12 dBSINAD?

≈12 dBSINAD?

Yes

No No

No

DCon Q3302

OK?

Yes

CR3305,CR3304 Forward

Biased?

≈12 dBSINAD?

≈12 dBSINAD?

Yes

Yes

Yes

Yes

No

No

No

Note: Circuits referredto are on Power

Amplifier Schematic

Troubleshooting Chart 2b-1, Receiver Front End

Page 30: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

22 Revision A, 12/96

RFon R5375

OK?

RFon C5382

OK?

RFon R5388

OK?

RFon C5303

OK?

Yes

Yes

No

NoGOTO Receiver

Back EndChart 2b-3

No GOTO ReceiverFront EndChart 2b-1

No Check Component SolderingCheck for Correct Component Values

Replace First Crystal Filter

Check Component SolderingCheck for Correct Component Values

Replace Second Crystal Filter

Yes

START

MAEPF-25499-A

Yes

Check 9.3 Volt SupplyEmitter on Q5388 = 0 VDC?

Collector on Q5388 = 8.1 VDC?Base on Q5388 = 0.73 VDC?Emitter on Q5382 = 8.1 VDC?

Collector on Q5382 -= 1.3 VDC?Base on Q5382 = 7.6 VDC?

Troubleshooting Chart 2b-2, Receiver IF

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23

Notes forTroubleshooting Chart 2b-3

1. If zero IF local oscillator (ZIF LO) is locked, the frequency should be very close to 109.65 MHz. If the ZIF LO is not locked, the frequency can be in the range of 100 to 120 MHz.

2. The ZIF must be programmed properly by the controller section of the radio in order for the ZIF LO to lock on frequency. Verify proper operation of controller section before proceeding.

NOTE:

Primary supply for the ZIF IC is 5 Volts. The supply originates in the synthesizer section of the radio.

Table 1 Voltage Table (Transistors)

Transistor Emitter Base Collector

Q3201 0.02V 0.7V 2.9V

Q3203 0.0V 0.7V 2.4V

Table 2 Voltage Table (ZIF IC)

U3201 Pin No. Probe At Voltage

2 R3220 2.1

27 C3220 2.5

28 C5398 2.5

35 C3207 2.4

6 C3201 1.6

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Troubleshooting Chart 2b-3, Receiver Back End

VerifyDetected Audioat C5398 (in IF

Section)

Verify109.65 MHz Signal

at R3211

VerifyCorrect Bias

Voltages in Q3203Amplifier (Refer

to Table)

Receiver OKGOTO Controller

Chart 1-5*

INJECT -20dBm Signalat Rated Deviation on

Channel Frequency intoAntenna Connector

Proceed to Receiver IFChart 2b-2 and/or

Receiver Front EndChart 2b-1

Yes

No

No

Yes

START

MAEPF-25497-B

Replace DefectiveComponents inQ3203 Amplifier

No

Verify109.65 MHz

Signal at R3219

VerifyZIF LO is Locked.

Steering Voltage at C3233Should be in 1.5 to 3.0

Volt Range.(Note 2)

Replace DefectiveComponents in Q3203

Amplifier

Yes

No

Replace DefectiveRF Components in ZIF LO

Including CR3201 andLoop Filter

Yes

Yes

Replace DefectiveQ3201 or Associated

Bias Resistors

No

No

Verify109.65 MHz

Signal at Pin 5 ofU3201(Probe at

C3202)

VerifyCorrect Bias

Voltages on U3201Per Table

Yes

VerifyZIF LO is Oscillating.

Use RF Probe on Emitterof Q3201. RF Present?

(Note 1)

VerifyCorrect Q3201Bias (Refer to

Table)

No

NoYes

Replace U3201After Verifying Good

5 Volt Supply

No

Verify2.1 MHz at Pin

22 of U3201 Probeat C5402 in IF

Section

Proceed toSynthesizer-Pendulum

Chart 2b-5

ZIF Not Programmed Properly.Verify Clock, Data, and Enable Lines

Active During ZIF Programming.Refer to Controller Chart 1-5*.

Yes

NoYes

Amp on Board U3201Defective, Replace U3201

After Verifying R3216,L3205, and C3202 are OK.

* Chart 1-5 is located in Volume 1 of this service manual.

Page 33: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Notes for Troubleshooting Charts 2b-4 and 2b-6 through 2b-9

1. Check that C3759 and C3760 both have a 2.5 V square wave present. If they do not, replace the FRAC-N (U3801). If squarewaves are present, check that 5V is present at pin 4 of CR3750. If 5V is not present at pin 4, replace CR3750.

2. Refer to the table below and determine which auxiliary bit should be on and its corresponding switching transistor, which depend on the programmed receive frequency.

NOTE: There should be approximately 4.2V at pin 4 of the corresponding switching transistor if the FRAC-N is functioning correctly.

3. Check that the switching transistor has 8.3V on pin 3 of the relevant switching transistor.

4. Check that 8.3V is on pin two of the switching transistor.

5. Use an RF probe as an antenna to examine the area of the active RX VCO to verify that the VCO is oscillating. The table below shows the active component of VCO which is in operation:

6. If VCO is not oscillating, probe drain and source of active component to see if it has the corresponding voltages. Drain should be at approximately 8V and source should be at 1 to 2V. Otherwise, look for shorts and opens among the components in the corresponding VCO. Replace any defective parts.

7. If VCO is oscillating, verify that the two RX buffers ( Q3905 and Q3781) are operating properly. If the two RX buffers are not amplifying the signal, check RF path and DC Bias voltages as shown in the table below:

NOTE: The voltages listed in the table below will vary somewhat between radios. Therefore, they should be used only as a guide.

8. If there is an oscillation and the radio still exhibits an out of lock condition, it is usually the result of insufficient power getting back to the prescaler. If this is the case, check the prescaler feedback buffer for correct signal amplification and the correct biasing as shown in the table below.

NOTE: Although the amount of power getting back to the prescaler will vary with frequency channel, a level higher than -7 dBm is sufficient to obtain lock.

9. If the radio will not transmit because a synthesizer or TX VCO error exists, the red transmit light will flash when the radio is keyed. Before proceeding make sure that the FAIL 001 error message is not displayed when the radio is in standby mode. If the FAIL 001 message is displayed, go to the FAIL 001 troubleshooting chart.

When there is a transmit error the radio is much easier to troubleshoot if the Lock Detect line is tied to 5V. This will make the radio think that it is in a locked state when in transmit mode. Otherwise, once the PTT is pressed and the synthesizer does not lock in an allotted time period it goes back into receive mode. The following troubleshooting will assume the Lock Det line is forced high and that the radio is keyed.

10. Look in the table below and determine which auxiliary bit should be on and its corresponding switching transistor depending on the programmed transmit frequency:

Frequency Range Auxiliary Bit On Switching Transistor

136.0 to 150.4 MHz 2 Q3786

150.0 to 174.0 MHz 4 Q3783

Frequency Range Active Component

136.0 to 150.4 MHz Q3904

150.0 to 174.0 MHz Q3903

Pin Q3905 Q3781

Collector 3.9V 4.8V

Base 0.65V 0.9V

Emitter 0.0V 0.25V

Pin Q3790

Collector 2.6V

Base 0.8V

Emitter 0.09V

Frequency Range Auxiliary Bit On Switching Transistor

136 to 155 MHz 1 Q3786

155 to 174 MHz 3 Q3783

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11. Check that there is 8.3V on pin 3 of the relevant switching transistor.

12. Check that there is 8.3V on pin two of the relevant switching transistor.

13. Use an RF probe as an antenna to examine the area of the active RX VCO to verify that the VCO is oscillating. The table below shows the active component of the VCO that is in operation:

14. The drain should be at approximately 8V and the source should be at 1 to 1.5V. Look for shorts and opens among the components in the correspondences. Replace any defective components.

15. If the VCO is oscillating, verify that the two TX buffers ( Q3789 and Q3782) are operating properly. If the two stages are not amplifying the signal then check the DC Bias voltages in the table below:

NOTE: The voltages listed in the table below will vary somewhat between radios. Therefore, they should be used only as a guide.

16. If there is an oscillation but it is at the wrong frequency, this is usually caused by insufficient power going to the prescaler. Check the prescaler feedback buffer for signal amplification and the correct biasing shown below.

NOTE: Although the amount of power getting back to the prescaler will vary with frequency channel, a level above -7 dBm is adequate to obtain lock.

17. If the red transmit light does not stay illuminated when the radio is keyed, there is a synthesizer problem. Go to the synthesizer no transmit troubleshooting chart (chart 7C).

18. Check the injection string buffer for signal amplification and the correct biasing shown below.

19. Check the RF path between the collector of Q3784 and capacitors C3807 and C3808 and the spiral inductor SC3802.

20. Check the path to J3500 pin 5 and replace any defective parts.

21. When in receive or standby mode, verify that FAIL 001 is not displayed. If FAIL 001 is displayed, go to FAIL 001 troubleshooting chart.

22. If no LO is getting to the mixer and there is no out of lock error, check C3795. If it is defective or the wrong value replace it. Otherwise, check the continuity of the LO lines going to the mixer.

23. Verify that the DC voltage at CR3753 pin 3 is 0.8V.

24. Check the appropriate resistor and capacitor according to the TX frequency as shown in the table below.

Check the above components for defects and proper part values and replace as required.

Frequency Range Active Component

136 to 155 MHz Q3761

155 to 174 MHz Q3760

Pin Q3789 Q3782

Collector 6.0V 5.9V

Base 1.0V 1.2V

Emitter 0.3V 0.25V

Pin Q3790

Collector 2.6V

Base 0.8V

Emitter 0.09V

Pin Q3784

Collector 5.4V

Base 0.9V

Emitter 0.35V

Frequency Range Capacitor Resistor

136 to 155 MHz C3822 R3816

155 to 174 MHz C3772 R3766

26 Revision A, 12/96

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NOTES

Revision A, 12/96 27

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28 Revision A, 12/96

Audioon TP3800?

Audioon R3763?

CheckVaractor Biasing

(Note 23)

Yes

Yes

NoCheck CouplingInto VCOs(Note 24)

Check ResistiveNetwork

R3815 and R3854

No ReplaceFRAC-N (U3801)

No Check AudioPath in

Controller *

START

MAEPF-25500-A

Yes

* Refer to Transmit Audio Paths Simplified Schematic Diagram and Controller ASFIC Schematic Diagram in Volume 1 of this service manual.

Troubleshooting Chart 2b-4, Synthesizer Deviation

Page 37: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

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9.3V atU3802-1?

5V atU3802-3?

5V onU3800-9,13,

14,23?

Yes

Yes

NoCheck That U3800

is Soldered Properlyor Locate Defect in

5V Line

No Check That Pin 2is Grounded

Replace U3802

16.8 MHzat R3750?

2.1 MHzat R3759?

Yes

Yes

Yes

NoTrace 2.1 MHz Lineto Controller and

ZIF Sections

Check R3759and C3768

Replace U3801

No Check C3754and R3750

Replace U3800

No Check 9.3VRegulated Supply

Path

START

MAEPF-25501-O

Troubleshooting Chart 2b-5, Synthesizer Pendulum

Page 38: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

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12.5-13.5V onCR3750-1?

Is8.3V Gettingto SwitchingTransistor?

(Note 3)

IsSwitchingTransistor

Functioning?(Note 4)

Yes

Yes

Yes

No ReplaceSwitching Transistor

No Check 8.3VDC Path

No ReplaceFRAC-N U3801

7.5V onCR3751-3?

Is theCorrect AUX BITSet? (Note 2)

Yes

Yes

ReplaceFRAC-N U3801

No ReplaceCR3751

No Check VoltageMultiplier Circuit

(Note 1)

START

MAEPF-25502-A

RF?(Note 5)

CheckLO Buffer(Note 7)

Yes

Not Find DC Problemand Replace

Defective Parts

Find DC Problemand Replace

Defective Parts

No Check RX VOC(Note 6)

PrescalerBuffer OK?

(Note 8)

Okay

Yes

Okay

No

Troubleshooting Chart 2b-6, Synthesizer Fail 001

Page 39: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

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31

Is theCorrect AUX BITSet? (Note 10)

Is 8.3 VGetting to Switching

Transistor(Note 11)

IsSwitching

Transistor Functioning(Note 12)

ReplaceFRAC-N U3801

(Note 9)

Force Lock Det High

Check 8.3 VDC Path.

No

Yes

No

Yes

START

MAEPF-25503-O

ReplaceSwitching Transistor

No

7.5 V onCR3755-3?

Is K9.1 Vat J3500-11?

ReplaceCR3755

Yes

No

Yes

Check PowerControl Section in

Controller

No

RF?(Note 13)

CheckTX Buffers(Note 15)

Check TX VOC(Note 14)

Yes

No

Yes

No

PrescalerBuffer OK?(Note 16)

Find DC Problemsand Replace

Defective Parts

Find DC Problemsand Replace

Defective Parts

ReplaceFRAC-N U3801

Yes

NoYes

Troubleshooting Chart 2b-7,Synthesizer No Transmission

Page 40: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

32 Revision A, 12/96

(Note 17)Red Light?

Q3784Bias OK?(Note 18)

FilteringComponents

OK?(Note 19)

Yes

Yes

Check TX INT Path(Note 20)

ReplaceDefective Parts

No

No

Find DC Problemand Replace

Defective Parts

No GOTO Synthesizer-No TransmitChart #7C

START

MAEPF-25504-O

Yes

Troubleshooting Chart 2b-8, SynthesizerNo Transmitter Injection Signal

Page 41: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision A, 12/96 33

(Note 21)Fail 001?

YesNoGOTO Synthesizer-

Fail 001Chart #7B

Check C3795(Note 22)

START

MAEPF-25505-O

Troubleshooting Chart 2b-9, Synthesizer No Receiver Local Oscillator Signal

Page 42: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

34 Revision A, 12/96

NOTES

Page 43: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Notes for Troubleshooting Chart 2b-11

General Notes:• Review the theory of operation before attempting to troubleshoot the power amplifier.

• Most transmitter circuitry is located on the side of the PC board facing down into the chassis. Therefore, a chassis eliminator ("cutaway" chassis), Motorola stock number 2705815W03), is useful while troubleshooting the radio.

• Set A+ supply to 13.4 volts with current limit set to 30 amperes.

• Ensure that any RF power attenuators used in test setups are rate for at least 500 Watts.

• Calibrate power meter regularly following the manufacture's suggested calibration method.

• Keep in mind that VSWR and insertion losses within any test setup affect the accuracy of RF power measurements.

• Table 1 on page 36 provides a list of typical voltage measurements for the 110W power amplifier.

• If a component is removed for troubleshooting, replace the removed part, regardless of its condition, with a new part.

• To reinstall the power amplifier board into the chassis, follow reassembly instructions in volume 1 of this service manual.

• Reapply any thermal paste removed during troubleshooting.

• Use only Motorola specified parts when component replacement is required.

Q3520 Field Bias Trim Procedure:1. Disconnect A+ supply from radio.

2. Remove R3505 and R3621. Place potentiometer R3527 (Motorola part number 1805170X01) on pads provided (see overlay for location).

3. Solder wires onto R3621 pads and connect milliamp meter in series with Q3520 drain.

4. Reconnect A+ supply, set voltage to 13.4 volts, and set current limit to 0.5 amps.

5. Key up transmitter, monitor milliamp meter and adjust pot until 70 milliamps of drain current is conducted.

6. Dekey transmitter and disconnect A+ supply.

7. Remove wires and replace R3505 and R3621.

Specific (Numbered) Notes1. Set current limit softpot to zero to disable current limit.

2. Remove R3503 and solder the center conductor of a small coaxial cable onto pin 5 of J3500. Connect ground to pin 4 or pin 6 of J3500. Attach an RF milliwatt meter and key transmitter to measure TX injection power. Then remove coax and replace R3503.

3. Measure PA_CNTRL with a DC voltmeter while transmitter is keyed.

4. Remove R3503 for RF drive off DC voltage measurements. PA_CNTRL should be greater than or equal to 10 volts with RF drive removed.

5. Remove R3503 and L3500, solder wires to remaining pads of L3500, place milliamp meter in series with Q3500 collector and measure DC current. Remove wires and replace R3505 and L3500.

6. Remove R3505, key up radio, measure Q3520 DC gate voltage and replace R3505.

7. If gate bias network parts are replaced, readjust gate bias voltage using the Q3520 Field Bias Trim Procedure that precedes these specific notes.

8. Disconnect A+ supply from radio. Remove R3505 and R3621. Solder wires onto remaining R3621 pads and connect millamp meter in series with Q3520 drain. Reconnect A+ supply, key up transmitter, and monitor milliamp meter. Remove wires and replace R3505 and R3621.

9. If gate bias and A+ supply voltage are present at gate and drain of Q3520, respectively, then Q3520 may be defective. First, check for solder defects. If none are found, replace Q3520 using a hot-air gun to reflow soldered leads, then readjust gate bias voltage using the Q3520 Field Bias Trim Procedure that precedes these specific notes.

10. Perform this measurement only while transmitter is dekeyed.

11. Disconnect A+ supply, remove L3616 and R3619, solder 20 gauge (or larger) wires to remaining R3619 pads, and connect an ammeter in series with the U3540 collector. Reconnect A+ supply, key up transmitter, and monitor ammeter. Remove wires and replace L3616 and R3619.

12. Reflow solder on base and collector leads and gently pry leads away from their pads. Check continuity of leads to ensure they are disconnected from circuit. Measure base-emitter and base-collector junction voltage drops from the base to ground and the base to collector, respectively, using the diode check function of a multimeter. The voltage drops should be approximately 0.6 volts. Reform leads and reflow.

!W A R N I N G

!To avoid personal injury from high RF Voltages and Currents, exercise extreme care while troubleshooting the transmitter power amplifier.

!C a u t i o n

!C a u t i o n

To avoid permanent damage to the power amplifier, do not key transmitter unless all screws that attach PA board to chassis are in place and are tightened to a torque level between 10- and 12-inch pounds.

Keying the transmitter for an extended period of time while using the chassis eliminator can cause damage to the radio. While using chassis eliminator, cool the radio by using a fan to force air through chassis cooling fins

Revision A, 12/96 35

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13. Key up the transmitter. Measure the DC voltage at the positive terminal of the battery connector and at the via after R3615. Subtract these two measurements and multiply by 100 to calculate final stage current in amps.

14. Check diodes using the diode check function of a multimeter.

15. Shield SH3590 must be removed with a hot-air gun to enable inspection of the harmonic filter. Be careful to lift the shield straight up. The parts within the shield will reflow before the shield and may be moved off their pads if they contact the shield.

Table 1 Typical Voltage Measurements for 110W Power Amplifier

A+ = 13.4 V RF Drive On RF Drive Off

PA_CNTRL 10V 6V 10V 6V

Q3500 Base 0.75V 0.75V 0.3V 0.3V

Q3500 Collector 7.7V 8.6V 7.7V 8.6V

Q3501 Base 7.1V 8.0V 7.1V 8.0V

Q3501 Emitter 7.7V 8.6V 7.7V 8.6V

Q3501 Collector 1.8V 1.2V 2.0V 0.8V

Q3502 Base 6.7V 4.0V 6.7V 4.0V

Q3502 Emitter 6.0V 3.3V 6.0V 3.5V

Q3502 Collector 7.1V 8.0V 7.1V 8.0V

Q3520 Gate 2.5V 2.5V N/A N/A

36 Revision A, 12/96

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Revision A, 12/96

37

Troubleshooting Chart 2b-11,Power Amplifier for 110-Watt Radio

ContinuousRed Light While

Mic Button isDepressed?

TunePower with RSS

Following ProcedureOutlined in SM?

(Note 1)

TXInjection Power

Less than 10 mW?(Note 2)

GOTO Synthesizer-No TransmitChart 2b-7

Read General Notes BeforeProceeding, Read Specific

Notes as Indicated

Check Battery Cable,Mic and Control Head

Connections

Tune TXCurrent Limit

No

Yes

Yes

No

START

MAEPF-25507-B

GOTO Synthesizer-No or Low TX Injection

Chart 2b-8

Yes

U3540Base-Ground

DC Resistance Lessthan 1 Ohm?

(Note 10)

Check/Repair/ReplaceDefective Parts in Base

Biasing and/orMatching Network

No

K9.1VPresent at J3500-11when Transmitter

is Keyed?

PA_CNTRLVoltage (J3500-8)

Less than 10V whenTransmitter is

Keyed?

GOTOControllerChart 1-20

GOTOControllerChart 1-20

No

No

Yes

U3560/U3561 BE and

BC Junctions Openor Short Circuited?

(Note 12)

ReplacePA Board

Yes

No

No

DefectiveParts in Matching/

Splitter Circuit BetweenU3540 and U3560/

U3561?

U3560/U3561 Base-

Ground Resistance Lessthan 1 ohm?(Note 10)

Repair/ReplaceDefective Parts

Yes

No

Check/Repair/ReplaceDefective Parts in Base Bias,RLC Feedback, Matching/Splitter or R3565-R3567

No

AreVoltages Around

Q3500, Q3501, Q3502per Table 1?

(Note 4)

Q3500Collector Current

Greater than 100 mA withRF Drive Removed?

(Note 5)

Check/Repair/ ReplaceDefective Parts Including/Around Q3500, Q3501,

and Q3502

Yes

No

Yes

No

DefectiveParts in MatchingNetwork Between

Q3520 andQ3500?

Repair/ReplaceDefective Parts

Repair/ReplaceDefective Parts

Check/Repair/ReplaceDefective Components inMatching Circuit Between

Q3500 and Q3520

Yes

No

Q3520Gate Voltage as

Per Table 1?(Note 6)

Check/Repair/ReplaceDefective Parts in the

Gate Bias and/or MatchingNetwork (Note S7)

Check/Repair/ReplaceDefective Parts in A+ DrainNetwork and Q3520 Itself

(Note S9)

Yes

No

Q3520Drain Current

is 70 mA WithoutDrive Power?

(Note 8)

Yes

No

No

DefectiveParts in MatchingNetwork Between

Q3520 andU3540?

Yes

Yes

DefectiveParts in Combiner/

Matching Network BetweenU3560/U3561 and

C3578?

DCVoltage at

R3583 and L3580 Nodeis Less than

1.8V?

ReplaceDefective Parts

Yes

Yes

No

Check/Repair/ReplaceDefective Parts in the PINDiode Bias Network and/or

Antenna Switch andHarmonic Filter

Yes

CR3580/CR3581 DiodeCheck Fails?

(Note 14)

DefectiveParts in Antenna

Switch?

Repair/ReplaceCR3580 and/or CR3581

No

Yes

No

Yes

DefectiveParts in Harmonic

Filter?(Note 15)

Repair/ReplaceDefective Parts

Repair/ReplaceDefective Parts

No

Yes

ContinuityCheck Fails from

J3503 and AntennaConnector?

Repair/ReplaceAntenna Connector

No

Yes

FinalStage Current

10 to 15 Amps?(Note 13)

Yes

No

Yes

U3540BE and BC

Junctions Open orShort Circuited?

(Note 12)

ReplacePA Board

Yes

NoNo

U3540Collector Current

Less than 2 Amps?(Note 11)

Yes

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38 Revision A, 12/96

NOTES

Page 47: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Reference Drawings 4Introduction This section contains reference drawings for the receiver (front end, IF,

and back end) and transmitter (synthesizer and power amplifier) portions of the radio. Reference drawings for the control head and the controller portions of the radio are located in volume 1 of this service manual.

The hierarchy of the schematic diagrams for the radio is shown in Figure 4. The first and highest tier in the hierarchy for the radio consists of three major blocks, which are: control heads, controller, and radio frequency (RF). On the hierarchy illustration, the details for the control head and controller blocks are not provided beyond the first tier level because all the subordinate drawings for these two blocks are located in volume 1 (Motorola Publication 68P81080C20) of this service manual.

Complete details are provided for the RF block because all the reference drawings for the RF block are located in this volume of the service manual.

Complete details for the control head and controller blocks are provided in a similar hierarchy chart located in volume 1 of this service manual.

Reference Drawings Included in this Section

The following reference drawings are provided in this section of this volume of the service manual:

• For Overall Radio:

- Main Transceiver and Power Amplifier (PA) Board Interconnect - Page 41

- Main Transceiver Board Section Locations - Page 42

- Schematic Diagrams Hierarchy - Page 45

- Main Board Overall Schematic Diagram - Page 46

- RF Schematic Diagram - Page 47

- Schematic Diagrams Interconnection Table - Page 73

Revision B, 03/99 Reference Drawings 39

Page 48: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

• For Receiver

- Receiver RF Schematic Diagram - Page 48

- Receiver Front End Component Locations and Parts List - Pages 49 and 51

- Receiver Front End Schematic Diagram - Pages 50 and 52

- Receiver IF Component Locations and Parts List - Pages 53 and 55

- Receiver IF Schematic Diagram - Pages 54 and 56

- Receiver Back End Component Locations and Parts List - Pages 57 and 59

- Receiver Back End Schematic Diagram - Pages 58 and 60

• For Synthesizer

- Synthesizer Component Locations and Parts List - Pages 61 and 64

- Synthesizer Overall Schematic Diagram - Pages 62 and 65

- Synthesizer Receiver VCO Schematic Diagam - Pages 63 and 66

- Synthesizer Receiver Injection String Schematic Diagram -Pages 62 and 65

- Synthesizer Transmitter Injection String Schematic Diagram -Pages 62 and 65

• For Power Amplifier

- Power Amplifier Board Section Locations - Page 43

- Range 1, Power Amplifier Component Locations and Parts List - Page 67

- Range 2, Power Amplifier Component Locations and Parts List - Page 68

- Power Amplifier Overall Schematic Diagram - Page 69

- 2-Pin and 12-Pin Power Amplifier Interconnects Component Locations and Parts List - Page 70

- 2-Pin and 12-Pin Power Amplifier Interconnects Schematic Diagrams - Page 71

Refer to Volume 1 of this service manual (Motorola Publication Number 68P81083C20) for reference drawings for the control head and controller portions of the radio.

Refer to the Secure Option service manual (Motorola Publication Number 68P81083C25) for reference drawings for the secure option for the radio.

40 Reference Drawings Revision B, 03/99

Page 49: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Figure 3. Main Transceiver and Power Amplifier (PA) Board Interconnect

MAIN BOARD

MAEPF-25479-B

See Figure 5

PA BOARD

2-PIN PAINTERCONNECT

12-PIN PAINTERCONNECT

See Figure 4

Revision B, 03/99 Reference Drawings 41

Page 50: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Figure 4. Main Transceiver Board Section Locations

MAIN CONTROLLER SECTION

REGULATORAND AUDIOPA SECTION

SYNTHESIZER

RECEIVERIF

RECEIVER RF SECTION

RECEIVERBACK END

RECEIVERFRONT END

CONTROLLERBLOCK

CONTROLLERSECTION

RFSECTION

AUDIOBLOCK

INTERFACEBLOCK

POWERCONTROL

BLOCK

MAEPF-25892-O

Revision B, 03/99 Reference Drawings 42

Page 51: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Figure 5. PA Board Section Locations

RF POWER AMPLIFIER

ANTENNASWITCH

HARMONICFILTER

POWERDETECTOR

MAEPF-25893-O

43 Reference Drawings Revision B, 03/99

Page 52: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Notes

44 Reference Drawings Revision B, 03/99

Page 53: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99 45

CONTROL HEADS(See Volume 1)

MAIN BOARDPOWER AMPLIFIER (PA) BOARD

RF POWERAMPLIFIER

ANTENNASWITCH

HARMONICFILTER

POWERDETECTOR

CONTROLLER(See Volume 1)

RF2-PIN

INTERCONNECT(PA-TO-RECEIVER)

TRANSMITTERINJECTION

STRING

RECEIVERINJECTION

STRING

VOLTAGECONTROLLEDOSCILLATOR

RECEIVERFRONT END

RECEIVERIF

RECEIVERBACK END

RECEIVERRF

SYNTHESIZER

12-PININTERCONNECT

(PA-TO-SYNTHESIZER)

MAEPF-25894-O

Figure 6 Schematic Diagram Hierarchy (Kits HUD4015A, HUD4015B, HUD4019A, HUD4019B, HUD4016A, HUD4016B, HUD4016C, HUD4021A, HUD4021B, HUD4021C)

Page 54: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

46 Revision B, 03/99

PA_TO_RX_INTERFACE

RX_IN

PA_TO_SYNTHESIZER_INTERFACE

A+_9_2A+_9_3CURRENT_SENSE+_9CURRENT_SENSE-_9

GNDD_9

GND_9_2_10K9.1V_9

PA_CNTRL_9PA_TEMP

TX_INJ

VFORWARD_9V_DRIVE_9

PA_CNTRL_9PA_TEMP_2 PA_TEMP_9

ROSC_SEL_1

RSSI_1

RX_INSPI_TX_DATA_1

SQUELCH_1

SW_B+_or_RX_CNTRL_1

SYN_SEL_1

TX_INJ

VDRIVE_2 VDRIVE_9VFORWARD_2 VFORWARD_9

ZIF_SEL_1

A+_9_2A+_9_3

AUDIO_MOD_1

CLK_1

CURRENT_SENSE+_2 CURRENT_SENSE+_9

CURRENT_SENSE-_2 CURRENT_SENSE-_9

DISC_1

GNDD_2

GNDD_9

GND_9_2_10K9.1V_2 K9.1V_9

LOCK_DET_1

PA_CNTRL_2

PA_CNTL_2

PA_CNTL_LIM_1

PA_TEMP_2

ROSC_SEL_1

RSSI_1

RX_CNTL_1

SPI_TX_DATA_1

SQUELCH_1

SYN_SEL_1VDRIVE_2V_FORWARD_2

ZIF_SEL_1

RF_BLOCK

2.1MHZ_1

9.3V_1

A+_2_2A+_2_3

CONTROLLER_BLOCK

2.1MHZ_1

9.3V_1

A+_CONT_2_2A+_CONT_2_3

ANA_GNDAUDIO_MOD_1

CLK_1CURRENT_SENSE_+_2CURRENT_SENSE_-_2

DISC_1

DUPLEX_LOCK_DET_1DUPLEX_SYN_SEL_1

GND_2

K9.1V_2LOCK_DET_1

63A81092C84-O

Main Board (Kits HUD4015A, HUD4015B, HUD4019A, HUD4019B) Overall Schematic Diagram

Page 55: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99 47

SPI_TX_DATA_4

SYN_SEL_4

TX_INJ

VFORWARD_2

VFORWARD_9

CURRENT_SENSE-_2

CURRENT_SENSE-_9

GNDD_9

GND_9_2_10

K9.1_2

K9.1_9

LOCK_DET_4

LO_INJ_HS

PA_CNTRL_2

PA_CNTRL_9

PA_CNTRL_LIM_2

PA_CNTRL_LIM_9

PA_TEMP_2

PA_TEMP_9

RF_REG_5V_4

ROSC_SEL_4

SYNTHESIZER

2.1MHZ_4

9.3V_4

A+_2_2A+_2_3

A+_9_2A+_9_3

ANA_GND

AUDIO_MOD_4

CLK_4

CURRENT_SENSE+_2

CURRENT_SENSE+_9

ROSC_SEL_1ROSC_SEL_4

RSSI_1

RX_IN

SPI_TX_DATA_1

SPI_TX_DATA_4SQUELCH_1

SW_B+_or_RX_CNTRL_1

SYN_SEL_4SYS_SEL_1

ZIF_SEL_1

RECEIVER RF

2.1MHZ_1

2.1_MHZ_49.3V_1

9.3V_4

AUDIO_MOD_1AUDIO_MOD_4

CLK_1

CLK_4

DISC_1

LOCK_DET_1LOCK_DET_4

LO_INJ_HS

RF_REG_5V_4

A+_2_2

VDRIVE_2

K9.1V_9

DISC_1

2.1MHZ_1

CLK_1

LOCK_DET_1

ROSC_SEL_1

RSSI_1

RX_IN

SQUELCH_1ZIF_SEL_1

SPI_TX_DATA_1

SW_B+_or_RX_CNTRL_1

SYN_SEL_1

AUDIO_MOD_1

9.3V_1

A+_2_3

A+_9_2A+_9_3CURRENT_SENSE+_9

CURRENT_SENSE-_2

CURRENT_SENSE-_9

GNDD_2

GNDD_9

GND_9_2_10

PA_CNTRL_9PA_TEMP_9

TX_INJ

VDRIVE_9

VFORWARD_2

VFORWARD_9

PA_CNTRL_2

K9.1V_2

PA_TEMP_2

CURRENT_SENSE+_2

63A81092C85-O

RF (Kits HUD4015A, HUD4015B, HUD4019A, HUD4019B) Sche-matic Diagram

Page 56: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

48 Revision B, 03/99

SQUELCH_1

SQUELCH_3

SW_B+_or_RX_CNTRL_1

SYN_SEL_1

SYN_SEL_4

ZIF_SEL_1

ZIF_SEL_3

IF_OUT

LOCK_DET_1

LOCK_DET_4

RF_REG_12V_5 RF_REG_5V_3

RF_REG_5V_4

RF_REG_5V_5RF_REG_5V_5_UHF

ROSC_SEL_1

ROSC_SEL_4

RSSI_1

RSSI_3

RX_CNTRL1

SPI_TX_DATA_1

SPI_TX_DATA_3

SPI_TX_DATA_4

RX_IN

TUNING_VOLTAGE

RECEIVER IF AMPLIFIER

RX FE BLOCK

2.1_MHZ_1

2.1_MHZ_3

2.1_MHZ_4

9.3V_1

9.3V_3

9.3V_4

AUDIO_MOD_1

AUDIO_MOD_4CLK_1

CLK_3

CLK_4DISC_1

DISC_3

IF_IN

2.1_MHZ_4SPI_TX_DATA_4

RX_INRF_REG_12V_5

RF_REG_5V_5_UHF

5V_AGC

9.3V

AGC_3

IF_IN

LO_IN

RF_REG_5V

LO_IN

5V_AGC

AGC_3

2.1_MHZ_1

SYN_SEL_1LOCK_DET_1

AUDIO_MOD_1ROSC_SEL_1

9.3V_1SQUELCH_1

ZIF_SEL_1

DISC_1RSSI_1

SPI_TX_DATA_1CLK_1

SW_B+_or_RX_CNTRL_1

CLK_49.3V_4LOCK_DET_4SYN_SEL_4ROSC_SEL_4AUDIO_MOD_4RF_REG_5V_4

RSSI_3

SPI_TX_DATA_3

SQUELCH_3

ZIF_SEL_3

RECEIVER BACKEND

2.1MHZ_3

CLK_3

DISC_3

IF_OUTRF_REG_5V_3

63A81092C86-O

Receiver RF (Kits HUD4015A, HUD4015B, HUD4019A, HUD4019B) Overall Schematic Diagram

Page 57: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

MAEPF-25466-A

C3304

C33

06

C3307

C3308

C3309C33

10

C33

37

C33

40C

3341

C33

42

C3345

C33461

1

1 2 3

45

2

3

3

2

1

3

4

4

5

4

6

5

C3347

C33

50C

3353

C3354

C3402

C3403

C34

04

C3405

C34

06C

3407

C3408

C3412

C3499 CR3302

12

12 3

3

CR3303

CR3305

E3301E3302E3303E3305

L3304

L3305L3306

L3307

L3327

3

21

L3328

L334

0

L3342

E C B

L340

5

L3406

Q3302

Q3303

R3301

R33

18R

3336

R33

16

R33

41

R33

53

R33

59R

3361

R33

62

R3405

R3406

R34

07

R34

20

T3301

T33

02

T33

03

C33

01

C33

03

C3311

C3312 C3313

C33

14C

3315

C33

16

C3317

C33

18

C3319

C33

20

C3321

C33

22

C33

23C

3324

C33

26

C3330

C3331

C33

32

C3333

C33

34

C3335

C3348

C3352C3401

C3409

CR

3304

E3304

E3306E3307

L3308

3

8

7 1

14

E

C

B

2

1L334

1

L3401

L340

2

L340

8

L340

9

L3410

L341

1L3

412

L341

3Q3301

R3302

R33

04

R3305

R3306

R3307R3308

R3309

R33

10

R33

11

R3312

R33

13

R33

14 R33

15

R3317

R33

54

R3355

R3357

R3401

U3300

MAEPF-25467-ALIGHT COMPONENTS SIDE

RECEIVER FRONT END COMPONENT LOCATIONS

HEAVY COMPONENTS SIDE

HUD4019A

NOTES:1. All resistance values are in ohms unless indicated otherwise.

2. Items indicated with an asterisk (*) are only placed in preamplifier models of radio.

3. Items indicated with a pound (#) sign are not placed in preamplifier models of radio.

4. Components shown in component location and schematic diagrams but not included in parts list are not placeed.

Printed Circuit Board No. 84D05115Y06 Revision D

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

CAPACITORS:C3301 2113743A19 0.100 uFC3303 2113931F17 470 pFC3304 2113930F22 6.2 pFC3306 2113930F51 100 pFC3307 2113930F45 56 pFC3308 2113930F51 100 pFC3309 # 2113930F25 8.2 pFC3310 * 2113930F59 220 pFC3310 2113930F51 100 pFC3311 2113743A19 0.100 uFC3312 2113931F17 470 pFC3313 2113930F41 39 pFC3314 2113930F48 75 pFC3315 2113930F29 12 pFC3316 2113930F38 30 pFC3317 2113930F26 9.1 pFC3318 2113930F36 24 pFC3319 2113930F26 9.1 pFC3320 2113930F36 24 pFC3321 2113930F25 8.2 pFC3322 2113930F35 22 pFC3323 2113930F27 10 pFC3324 2113740F49 82 pFC3326 2113740F59 220 pFC3330 2113740F43 47 pFC3331 2113931F49 10000 pFC3332 2113931F49 10000 pFC3333 2113931F17 470 pFC3334 2113931F49 10000 pFC3335 2113931F17 470 pFC3336 2113931F49 10000 pFC3337 2113930F59 220 pFC3340 2113931F17 470 pFC3341 2113931F17 470 pFC3342 2113931F17 470 pFC3345 2113931F17 470 pFC3346 2113931F17 470 pFC3347 2113932K15 0.1 uFC3348 2113931F17 470 pFC3350 2113931F17 470 pFC3352 2113931F17 470 pFC3353 2113931F17 470 pFC3354 2113931F49 10,000 pFC3401 2113930F36 24 pFC3402 2113930F41 39 pFC3403 2113930F07 1.5 pFC3404 2113930F07 1.5 pFC3405 2113930F28 11 pFC3406 2113930F28 11 pFC3407 2113930F42 43 pFC3408 2113931F17 470 pFC3409 2113930F38 30 pFC3412 2113740F40 36 pFC3499 2113931F49 10,000 pF

RECEIVER FRONT END PARTS LIST

DIODES:

CR3302 4802081B58 DualCR3303 4880154K03 Dual Schottky MixerCR3304 4880154K05 PIN, dualCR3305 4880154K05 PIN, dual

SHIELDS:E3301 2605915V01 PCB MountE3302 2602660J01 Harmonic FilterE3303 2602660J01 Harmonic FilterE3304 2605915V01 PCB MountE3305 2605915V01 PCB MountE3306 2605261V01 ZIFE3307 260526IV01 ZIF

INDUCTORS:L3304 2460591L29 Air wound coil16.03 nHL3305 2460591L29 Air wound coil16.03 nHL3306 2460591L29 Air wound coil16.03 nHL3307 2460591L29 Air wound coil16.03 nHL3308 2462587T20 270 nHL3327 2462587T17 150 nHL3328 2462587T17 150 nHL3340 2462587Q40 270 nHL3341 2462587Q40 270 nHL3342 2462587T30 1000 nHL3401 2462587T15 100 nHL3402 2462587T18 180 nHL3405 # 2462587T41 39 nHL3406 2460591C40 Air wound coil17.02 nHL3408 2484562T16 Air wound coilL3409 2484562T17 Air wound coilL3410 2460591M32 Air wound coil 27.42 nHL3411 2484562T17 Air wound coilL3412 2460591M32 Air wound coil 27.42 nHL3413 2460591M32 Air wound coil 27.42 nH

TRANSISTORS:Q3301 4805128M16 PNPQ3302 4882971R01 NPN

INTEGRATED CIRCUITS:Q3303 5105625U28 Mixer

RESISTORS:R3301 0662057A29 150R3302 0662057A41 470R3304 0662057A81 22KR3305 0662057A61 3300R3306 0662057A85 33KR3307 0662057A89 47KR3309 0662057A81 22KR3310 0662057A59 2700R3311 0662057A85 33KR3312 0662057A89 47KR3314 0662057A20 62

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

Revision B, 03/99 Receiver FronComponent L

R3315 0662057A12 30R3316 0662057A27 120R3317 0662057A20 62R3318 0662057A20 62R3341 0662057A18 51R3353 0662057A61 3300R3354 0662057A65 4700R3355 0662057A49 1000R3357 * 0662057A16 43R3357 0662057A08 20R3359 * 0662057A01 10R3359 0662057A13 33R3361 * 0662057A08 20R3361 0662057A18 51R3401 0662057A18 51R3405 * 0662057A53 1500R3405 0662057A49 1000R3406 0662057A19 56R3407 * 0662057B47 0R3420 * 0662057B47 0

TRANFORMERS:T3301 2505515V03 MixerT3302 2505515V03 MixerT3303 2505515V03 Mixer

INTERGRATEDCIRCUITS:

U3300 5183222M49 Amplifier

PRINTED CIRCUIT BOARD (For Refer-ence Only)

84D05115Y06 For Kits HUD4015A,

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

49t End (Kits HUD4015A, HUD4019A) ocations and Parts List

Page 58: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

50

TUNING_VOLTAGE

LO_IN

LO_IN

RF_REG_5V

RF_REG_5V

IF_IN

IF_IN

RX_IN

RX_IN

5V_AGC

9.3V

9.3V

AGC_3

TUNING_VOLTAGE

470pFC3340

R33533.3K

E3304

L3327150nH

470pF

C3408

16.03nHL3304

47pFC3330

33

Q3302

R3359

9.3_FILT

9.3_FILT

270nH

R3314

100

L3308

680pFC3334

U3300-3

13

12

.01uF

144

11

CR3304

IF3308

C3326

E3302

.01uFC3336

CR3305

4:1

.01uFC3337

CR3303T3302

2

3

1

1 2 3

45

L341128nH

470

L33421uH

30pF

C3409

R3302

IF3307

470pFC3303

2 4

11

E3307

U3300-1

R3313

31

100K

9.3_FILT

100R3317

9.3_FILT

100

1

R3318

T3301

4:1

2

34

5

100

R3315

4

11

C3331.01uF

U3300-2

6

57

2.2K

R3304

22K

C3332.01uF

R3312

R3305

R3307

47K

R3306

33K

47K

R3310

3.3K

9.3_FILT

22K

R3309

R3311

C3333

33K

470pF

84

11

R3308U3300-4

R336275

9

10

IF3301

100K

E3303

L330616.03nH

L340928nH

C3352470pF

C340511pF

470pFC3350

470pFC3312

L3405

.01uF

C3499

39nH

IF3303

1K

11pFC3406

27.42nHL3413

R3355L3401100nH

27.42nHL3410

C3304

6.2pF

470pFC3353

IF3304

E3305

C3335470pF

17.02nH

L3406

IF3306180nH

L3402

39pF 82pF

C3324

R3401

C3402

22pFC3322

51

C3346

R334151

470pF

27.42nHL3412C3318

24pF

150nHL3328

39pFC3313

75pF

470pFC3341

C3314

43pF

C3407

IF3302

C3348

470pF

T3303

4:11

2

3 4

5

L340822nH

R335720

R3407

0

L330516.03nH

100pF

C3310

.01uF

C3317

9.1pF

C3347

C3354

.01uF

24pFC3320

30pFC3316

36pF

C3412

10pF

C3323

C34041.5pF

Q3301

8.2pF

C3321

C3345470pF

C3301

E3306

E3301

270nH

L3340

R3316

620

56

R3361

51

R3406

56pFC3307

270nHL3341

30K

R3301

C33098.2pF

C3308100pF

C3319

9.1pF

R3405

1K

1.5pFC3403

16.03nHL3307

Q3303

61

G2 S12

S23

D15

D24

G1

C331124pFC3401

470pF

R3354

C3342

2

4.7K

12pF

CR3302

1

3

0

C3315

IF3300

100pFC3306

C3309

1500 ohms

RF PREAMP

8.2 pF

MIXER

NOT PLACED

R3405

PREAMP

20 ohms

220 pF

R3357

R3420

VARACTOR FILTER

MIXER IFTERMINATION

NOT PLACED

43 ohms

51 ohms

C3310

L3405

33 ohmsR3359

100 pF

10 ohms

zero ohms

STANDARD

R3420

NOT PLACED

39 nH

R3407

FIXED FILTER

zero ohms

SHIELDS

R3361

AGC ATTENUATOR

0.1uF

0.1uF

20 ohms

NOT PLACED

1000 ohms

63A81084C38-A

Receiver Front End (Kits HUD4015A, HUD4019A) Schematic Diagram

PCB 84D05115Y06 (For Reference Only)

Page 59: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

C3304

C33

06

C33

07

C33

08

C3309C33

10

C3336

C33

37

C33

40

C33

41

C33

42

C3345

C3346

C3347

C33

50C

3353

C33

54

C3402

C3403

C3404

C3405

C3406

C34

07

C3408

C3412

C3499

CR3302

CR3303

CR3305

E3301E3302E3303

E3305

L3304

L3305L3306

L3307

L3327

L3328

L334

0

L3342

L340

5

L3406

Q3302

Q33

03

R3301R3316

R3318

R33

41

R33

53

R33

59R

3361

R33

62

R3405

R34

06 R34

07

R34

20

21

5 4

3

T3301

2

1 5

43

T33022

15

4 3T3303

MAEPF-26643-OHEAVY COMPONENTS SIDE

C3301

C33

03

C3311

C3312C3313

C33

14C

3315

C33

16C3317

C33

18

C3319

C33

20

C3321

C33

22

C33

23C

3324

C33

26

C3330

C3331

C33

32

C3333

C33

34

C3335

C3348

C3352 C3401

C3409

CR

3304

E3304

E3306E3307

L3308

L334

1

L3401

L340

2

L340

8

L340

9

L3410

L341

1L3

412

L341

3

Q3301

R3302

R33

04

R3305

R33

06

R33

07

R3308

R3309

R33

10

R33

11

R3312

R33

13 R33

14

R33

15

R3317

R33

54

R3355

R3357

R3401

8

7 1

14

U3300

VIEWED FROM SIDE 2

MAEPF-26644-O

LIGHT COMPONENTS SIDE

RECEIVER FRONT END COMPONENT LOCATIONS

2. Items indicated with an asterisk (*) are only placed in preamplifier models of radio.

3. Items indicated with a pound (#) sign are not placed in preamplifier models of radio.

4. Components shown in component location and schematic diagrams but not included in parts list are not placeed.

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

CAPACITORS:C3301 2113743A19 0.100 uFC3303 2113931F17 470 pFC3304 2113930F22 6.2 pFC3306 2113930F51 100 pFC3307 2113930F45 56 pFC3308 2113930F51 100 pFC3309 # 2113930F25 8.2 pFC3310 * 2113930F59 220 pFC3310 2113930F51 100 pFC3311 2113743A19 0.100 uFC3312 2113931F17 470 pFC3313 2113930F41 39 pFC3314 2113930F48 75 pFC3315 2113930F29 12 pFC3316 2113930F38 30 pFC3317 2113930F26 9.1 pFC3318 2113930F36 24 pFC3319 2113930F26 9.1 pFC3320 2113930F36 24 pFC3321 2113930F25 8.2 pFC3322 2113930F35 22 pFC3323 2113930F27 10 pFC3324 2113740F49 82 pFC3326 2113740F59 220 pFC3330 2113740F43 47 pFC3331 2113931F49 10000 pFC3332 2113931F49 10000 pFC3333 2113931F17 470 pFC3334 2113931F49 10000 pFC3335 2113931F17 470 pFC3336 2113931F49 10000 pFC3337 2113930F59 220 pFC3340 2113931F17 470 pFC3341 2113931F17 470 pFC3342 2113931F17 470 pFC3345 2113931F17 470 pFC3346 2113931F17 470 pFC3347 2113932K15 0.1 uFC3348 2113931F17 470 pFC3350 2113931F17 470 pFC3352 2113931F17 470 pFC3353 2113931F17 470 pFC3354 2113931F49 10,000 pFC3401 2113930F36 24 pFC3402 2113930F41 39 pFC3403 2113930F07 1.5 pFC3404 2113930F07 1.5 pFC3405 2113930F28 11 pFC3406 2113930F28 11 pFC3407 2113930F42 43 pFC3408 2113931F17 470 pFC3409 2113930F38 30 pFC3412 2113740F40 36 pFC3499 2113931F49 10,000 pF

RECEIVER FRONT END PARTS LIST

DIODES:

CR3302 4802081B58 DualCR3303 4880154K03 Dual Schottky MixerCR3304 4880154K05 PIN, dualCR3305 4880154K05 PIN, dual

SHIELDS:E3301 2605915V01 PCB MountE3302 2602660J01 Harmonic FilterE3303 2602660J01 Harmonic FilterE3304 2605915V01 PCB MountE3305 2605915V01 PCB MountE3306 2605261V01 ZIFE3307 260526IV01 ZIF

INDUCTORS:L3304 2460591L29 Air wound coil16.03 nHL3305 2460591L29 Air wound coil16.03 nHL3306 2460591L29 Air wound coil16.03 nHL3307 2460591L29 Air wound coil16.03 nHL3308 2462587T20 270 nHL3327 2462587T17 150 nHL3328 2462587T17 150 nHL3340 2462587Q40 270 nHL3341 2462587Q40 270 nHL3342 2462587T30 1000 nHL3401 2462587T15 100 nHL3402 2462587T18 180 nHL3405 # 2462587T41 39 nHL3406 2460591C40 Air wound coil17.02 nHL3408 2484562T16 Air wound coilL3409 2484562T17 Air wound coilL3410 2460591M32 Air wound coil 27.42 nHL3411 2484562T17 Air wound coilL3412 2460591M32 Air wound coil 27.42 nHL3413 2460591M32 Air wound coil 27.42 nH

TRANSISTORS:Q3301 4805128M16 PNPQ3302 4882971R01 NPN

INTEGRATED CIRCUITS:Q3303 5105625U28 Mixer

RESISTORS:R3301 0662057A29 150R3302 0662057A41 470R3304 0662057A81 22KR3305 0662057A61 3300R3306 0662057A85 33KR3307 0662057A89 47KR3309 0662057A81 22KR3310 0662057A59 2700R3311 0662057A85 33KR3312 0662057A89 47KR3314 0662057A20 62

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

Revision B, 03/99Receiver Front EnComponent Loca

R3315 0662057A12 30R3316 0662057A27 120R3317 0662057A20 62R3318 0662057A20 62R3341 0662057A18 51R3353 0662057A61 3300R3354 0662057A65 4700R3355 0662057A49 1000R3357 * 0662057A16 43R3357 0662057A08 20R3359 * 0662057A01 10R3359 0662057A13 33R3361 * 0662057A08 20R3361 0662057A18 51R3401 0662057A18 51R3405 * 0662057A53 1500R3405 0662057A49 1000R3406 0662057A19 56R3407 * 0662057B47 0R3420 * 0662057B47 0

TRANFORMERS:T3301 2505515V03 MixerT3302 2505515V03 MixerT3303 2505515V03 Mixer

INTERGRATEDCIRCUITS:

U3300 5183222M49 Amplifier

PRINTED CIRCUIT BOARD (For Refer-ence Only)

84D05115Y08 For Kits HUD4015B, HUD4019B

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

NOTES:1. All resistance values are in ohms unless indicated otherwise.

51d (Kits HUD4015B, HUD4019B) tions and Parts List

Page 60: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

52 Revision B, 03/99

NOT PLACED

NOT PLACED

43 ohms

51 ohms

PREAMP

L3405

R3357

MIXER IF

1500 ohms

220 pF

C3309

R3359 10 ohms

VARACTOR FILTER

R3361

ZERO ohms

39 nH

R3407

100 pF

NOT PLACED

TERMINATION

NP

1000 ohms

STANDARD

R3362

FIXED FILTER

ZERO ohms

NOT PLACED

L3308

AGC ATTENUATOR

R3420

33 ohms

RF PREAMP

20 ohms

NP

C3310

SHIELDS

NOT PLACED

8.2 pF

MIXER

NOT PLACED

R3405

20 ohms

MODEL CHART

NOT PLACED

16.03nHL3306

270nH

R3316

120

270nH

L3340

C3324

180nH

L3402

82pF39pF

C3402

R3401

22pFC3322

51

IF3306

51R3341

C3318

24pF 27.42nHL3412

39pF

C3313

L3341

56pFC3307

270nH

150

R3301

8.2pFC3309

C3319

C3308

9.1pF

100pF

*R3405*

1K16.03nHL3307

1.5pF

C3403

*R3361*

51

C3311

D1D24

6 G1 1G22S13S2

0.1uF

Q3303GN2011

5

3.3KR3353

Q3302

*R3359*33

C3340470pF

47pFC3330

E3304SHIELD

150nHL3327

16.03nHL3304

C3408

470pF56

R3406

0

R3407

16.03nHL3305

*C3310*

100pF

9.1pF

C3317

0.1uFC3347

C3354

.01uF

C331624pFC3320

30pF

36pF

C3412

R3312

C3332

.01uF

9.3_FILT

47K

47KR3307

R3310

33K

R3306

2.7K

22K

R3309

470pF

33K

R3311

U3300-4

13

1214

4

11

C3333

R3308

MC3403

100K

9.3_FILT

9.3_FILT

28nH

L3409

C3352470pF

11pFC3405

C3350

470pF

C3312470pF

39nH

L3405

C3499

.01uF

IF3303

11pF

C3406

R33551K

27.42nH

L3413

CR3302

150nHL3328

75pF

C3314

IF3302

43pF

C3407

470pF

C3341

470pF

IF3301

C3348

R336275

E3303SHIELD

CR3304

220pFC3326

IF3308C3336.01uF

SHIELDE3302

CR3305

2 3

5 4

220pFC3337

XFMRT3302

1

CR3303

28nHL3411

470pF

1uHL3342

C3401

C3342

24pF

4.7KR3354

12pF

C3315

100pFC3306

0R3420

IF3300

T3303XFMR

1

2

3

5

4

L3408

22nH

*R3357*20

C3346

470pF

R3302

470

470pF

30pF

C3409

IF3307

C3303

2

31

4

11

SHIELDE3307

MC3403U3300-1

MC3403U3300-3

9

108

4

11

100KR3313

1

2

3

5

4

T3301XFMR

62R3317

9.3_FILT

9.3_FILT

62R3318

U3300-26

57

4

11

30

R3315

C3331

.01uF

MC3403

22K

R3304

3.3K

R3305

100nHL3401

27.42nHL3410

6.2pF

C3304

IF3304

470pF

R3314

C3353

62

C3334.01uF

1.5pF

C3404

10pF

C3323

8.2pF

C3321

Q3301

C3345470pF

0.1uF

C3301

SHIELDE3306E3305

SHIELD

SHIELDE3301

C3335470pF

17.02nH

L3406

9.3V

9.3V

5V_AGC

LO_IN

LO_IN

RF_REG_5V

RF_REG_5V

IF_IN

IF_IN

TUNING_VOLTAGE

TUNING_VOLTAGE

AGC_3

RX_IN

RX_IN

63A81091C65-O

Receiver Front End (Kits HUD4015B, HUD4019B) Schematic Diagram

PCB 84D015115Y08 (For Reference Only)

Page 61: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

MAEPF-25468-A

C53

01

C53

02C

5303

C53

71

C5372C5375C5376

C5377

C53

79

C5380

C5381

C5382

C5384

C53

85

C5386

C5387

C5389

C53

90

C53

91

C53

93

C53

94 C53

95

C53

96 C5397C5398

C5399

C54

00

C5401C5402

C54

12

C5417C5418

E5301 E5302

L5301 L530

2

L5374

L5376 L5377 L5378

L537

9

L538

0

L538

1

L5382

L538

3

Q53

88R

5301

R5375R5376

R5377R5378

R5379

R5380

R5381

R53

86

R53

87

R53

88

R5389

Y5376 Y5377

1

1

2

2

3

3 4

123

4

1

62

43

5

1

1

62

2

43

3

5

MAEPF-25469-A

C53

83

C5392

C5403

C5410

K

A A

C54

11

C54

15

E5303 E5304

L530

5

L539

9

Q5382

Q53

90

R53

82

R5384

E B

C

R53

85

R5390

R53

95

VR5371

Y5378Y5379

LIGHT COMPONENTS SIDE

RECEIVER IF COMPONENT LOCATIONS

HEAVY COMPONENTS SIDE

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

CAPACITORS:C5301 2113931F49 10,000 pFC5302 2113930F15 3.3pFC5303 2113932K15 0.1 uFC5377 2113930F32 16 pFC5380 2113930F18 4.3 pFC5381 2113930F25 8.2 pFC5382 2113930F17 470 pFC5383 2113931F49 10,000 pFC5384 2113931F49 10,000 pFC5385 2113931F49 10,000 pFC5386 2113931F49 10,000 pFC5387 2113930F34 20 pFC5391 2113930F49 10,000 pFC5392 2113930F51 100 pFC5393 2113930F51 100 pFC5394 2113930F51 100 pFC5395 2113930F51 100 pFC5396 2113930F51 100 pFC5397 2113930F51 100 pFC5398 2113930F51 100 pFC5399 2113930F51 100 pFC5400 2113930F51 100 pFC5401 2113930F51 100 pFC5402 2113930F51 100 pFC5403 2113930F51 100 pFC5415 2113931F17 470 pFC5417 2113931F17 470 pFC5418 2113931F17 470 pF

SHIELDS:E5301 2605915V01 PCB MountE5302 2605915V01 PCB MountE5303 2605134Y01 2nd InjectionE5304 2605134Y01 2nd Injection

INDUCTORS:L5301 2462587T03 10 nHL5302 2462587T20 270 nHL5305 2462587Q40 270 nHL5376 2462587T20 270 nHL5378 2462587T20 270 nHL5380 2462587T30 1000 nHL5381 2462587T17 150 nHL5399 2462587Q40 270 nH

TRANSISTORS:Q5382 4805128M16 PNPQ5388 4882971R01 NPN

RESISTORS:R5301 0662057A18 51R5375 0662057B47 0R5376 0662057A49 1000R5377 0662057A01 10R5378 0662057A49 1000R5379 0662057A18 51R5380 0662057B47 0R5381 0662057A47 0R5382 0662057A22 75R5384 0662057A49 1000

RECEIVER IF PARTS LIST

Revision B, 03/99ReceivHUD4

R5385 0662057A65 4700R5386 0662057A57 2200R5387 0662057A57 2200R5388 0662057A22 75R5389 0662057B47 0R5390 0662057B47 0

FILTERS:Y5378 4805736Y03 Xtal, 2 Poles,

109.65 MHzY5379 4805736Y04 Xtal, 2 Poles,

109.65 MHz

PRINTED CIR-CUIT BOARD (For Refer-ence Only)

84D05115Y06 For Kits HUD4015A, HUD4019A

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

NOTES:1. All resistance values are in ohms unless indicated

otherwise.

2. Components shown in component location and schematic diagrams but not included in parts list are not placed.

53er IF Component (Kits HUD4015A, 019A) Locations and Parts List

Page 62: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

54

MODEL CHART

NP

NP

NOT PLACED

R5375

VR5371

Q5390

UHF

NOT PLACED

NOT PLACED

NOT PLACED

NP NP NP

R5390

R5395

C5371

NP

NP

NOT PLACED

UHF

24 pF

100 nH

VHF

PLACED

VHF

NOT PLACED

ZERO ohms

C5411

C5412

NP

NOT PLACED

NOT PLACED

NP

L5374

NOT PLACED

NOT PLACED 2.2 uF

NP

ZERO ohms

10,000 ohms

PLACED

C5410 0.1 uF

0.01 uF

NP

IF5334

0.1uF

2.1_MHz_3

SYN_SEL_4

SYN_SEL_4

AUDIO_MOD_4

AUDIO_MOD_4

ZIF_SEL_1

ZIF_SEL_1

LOCK_DET_1

LOCK_DET_1

LOCK_DET_4

LOCK_DET_4

ROSC_SEL_1

ROSC_SEL_1

SW_B+_or_RX_CNTRL_1

SW_B+_or_RX_CNTRL_1

RX_CNTRL1

RX_CNTRL1

9.3V_3

9.3V_3

ROSC_SEL_4

ROSC_SEL_4

SQUELCH_3

SQUELCH_3

SQUELCH_1

SQUELCH_1

ZIF_SEL_3

ZIF_SEL_3

9.3V_4

9.3V_4

AUDIO_MOD_1

AUDIO_MOD_1DISC_3

DISC_3

RSSI_3

RSSI_3

2.1_MHz_3

IF_IN

IF_IN

CLK_1

CLK_1

RF_REG_5V_4

RF_REG_5V_4

2.1_MHz_4

2.1_MHz_1

2.1_MHz_1

SPI_TX_DATA_3

SPI_TX_DATA_3

RF_REG_12V_5

RF_REG_12V_5

SPI_TX_DATA_1

SPI_TX_DATA_1

DISC_1

DISC_1

RSSI_1

RSSI_1

CLK_3

CLK_3

CLK_4

CLK_4

SPI_TX_DATA_4

SPI_TX_DATA_4

RF_REG_5V_3

RF_REG_5V_3

SYN_SEL_1

SYN_SEL_1

2.1_MHz_4

0.1uF

C5303

IF_OUT

IF_OUT

9.3V_1

9.3V_1

IF5328

RF_REG_5V_5_UHF

RF_REG_5V_5

RF_REG_5V_5

IF5323

C5387

12pF

E5301

L5377620nH

C5395100pF

100pFC5392

180nHL5302

IF5337

C5382

470pF

IF5318

Q5382

IF5311

270nH

L5305

IF5310

24pFC5412

IF5333

0

R5375

IF5335

IF5332

IF5319

C5384.01uF

270nHC53762.4pF

L5376

2

3

Q53901

R5387

IF5303

1K

IF5320

IF5322

L5301

C5393100pF

E5302

10nH

100nH

L5374

IF5321

100pFC5401

IF5327

2.2KR5386

R53854.7K

IF5331

1uH

C5385.01uF

L5380

.01uFC5383

IF5317

IF5336

IF5309

IF5307

100pFC5394

R5379

IF5302

IF5314

120nHL5379

33

IF5308

470nHL5383

C5396100pF

270nH

L5399

R5389

150

C5386

.01uF

C5410

R5390

0

R5380

0

R53841K

R538230

IF5329

R53761K

C54112.2uF

100pF

Q5388

IF5324

C5403

IF5330

IF5326

E5303

IF5316

E5304

Y5379

3

GN

D

4

GN

D

5

GN

D

6

GN

D

1

OU

T

IN

2

OU

T

Y5378

3

GN

D

4

GN

D

5

GN

D

6

GN

D

1

IN

2

R5301

470pFC5417

470pFC5418

VR5371

75

IF5304

3.3pFC5302

15V

R5388

.01uF

C5301

C5381

8.2pF

51

150nHL5381

270nHL5378

0

R5381

IF5306

R539510K

C5398100pF

C5391

3.9pFC5377

16pF

IF5315

.01uF

C5371R5377

10

470pFC5415

100pF

C53891pF

C5402

Y5377

4CASEGND

2

IN

3

OUT

1

Y5376

4CASEGND

2

IN

3

OUT

1

C5400100pF

IF5301

IF5300

100pFC5399

IF5313

IF5312

C53751pF

IF5305

C53791pF

C53725.6pF 620nH

L5382

1KR5378

100pFC5397

C53901pF

C53804.3pF

63A81084C39-A

Receiver IF (Kits HUD4015A, HUD4019A)Schematic Diagram

PCB 84D015115Y06 (For Reference Only)

Page 63: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

C53

01

C53

02

C53

03

C53

71

C53

72

C53

75

C53

76

C5377

C53

79

C53

80C

5381

C5384

C53

85

C5386

C5387

C53

89

C53

90

C5391

C53

93

C53

94 C53

95

C53

96

C5397

C5398

C5399C5400

C5401C5402

C54

12

C5417

C54

18

E5301 E5302

L5301

L530

2

L5374

L537

6

L537

8

L538

0

L538

1

Q5388

R53

01

R53

75

R5376

R53

77

R5378

R5379

R53

86

R53

87 R53

88

56

43

2

1

Y5378

56

43

2

1

Y5379

MAEPF-26645-O

C53

83

C5392

C5403

C5410

C5411

C54

15

L530

5

L539

9

Q5382

Q5390

R53

82

R5384

R53

85

R5390

R53

95

VR5371

MAEPF-26646-OLIGHT COMPONENTS SIDE

RECEIVER IF COMPONENT LOCATIONS

HEAVY COMPONENTS SIDE

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

CAPACITORS:C5301 2113931F49 10,000 pFC5302 2113930F15 3.3pFC5303 2113932K15 0.1 uFC5377 2113930F32 16 pFC5380 2113930F18 4.3 pFC5381 2113930F25 8.2 pFC5383 2113931F49 10,000 pFC5384 2113931F49 10,000 pFC5385 2113931F49 10,000 pFC5386 2113931F49 10,000 pFC5387 2113930F29 12 pFC5391 2113930F17 3.9 pFC5392 2113930F51 100 pFC5393 2113930F51 100 pFC5394 2113930F51 100 pFC5395 2113930F51 100 pFC5396 2113930F51 100 pFC5397 2113930F51 100 pFC5398 2113930F51 100 pFC5399 2113930F51 100 pFC5400 2113930F51 100 pFC5401 2113930F51 100 pFC5402 2113930F51 100 pFC5403 2113930F51 100 pFC5415 2113931F17 470 pFC5417 2113931F17 470 pFC5418 2113931F17 470 pF

SHIELDS:E5301 2605915V01 PCB MountE5302 2605915V01 PCB Mount

INDUCTORS:L5301 2462587T03 10 nHL5302 2462587T18 180 nHL5305 2462587Q40 270 nHL5376 2462587T20 270 nHL5378 2462587T20 270 nHL5380 2462587T30 1000 nHL5381 2462587T17 150 nHL5399 2462587Q40 270 nH

TRANSISTORS:Q5382 4805128M16 PNPQ5388 4882971R01 NPN

RESISTORS:R5301 0662057A22 75R5375 0662057B47 0R5376 0662057A49 1000R5377 0662057A01 10R5378 0662057A49 1000R5379 0662057A13 33R5382 0662057A12 30R5384 0662057A49 1000R5385 0662057A65 4700R5386 0662057A57 2200R5387 0662057A49 1000R5388 0662057A18 51

RECEIVER IF PARTS LIST

Revision B, 03/99ReceivComp

R5390 0662057B47 0

FILTERS:Y5378 4805736Y03 Xtal, 2 Poles,

109.65 MHzY5379 4805736Y04 Xtal, 2 Poles,

109.65 MHz

PRINTED CIR-CUIT BOARD (For Refer-ence Only)

84D05115Y08 For Kits HUD4015B HUD4019B

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

NOTES:1. All resistance values are in ohms unless indicated

otherwise.

2. Components shown in component location and schematic diagrams but not included in parts list are not placed.

55er IF (Kits HUD4015B, HUD4019B) onent Locations and Parts List

Page 64: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

56 Revision B, 03/99

NOT PLACED

R5375

VR5371

Q5390

NOT PLACED

R5395

NOT PLACED

ZERO ohms

10,000 ohms

PLACED

C5411

PLACED

NP

VHF

NOT PLACED

NP

NOT PLACED

R5390

ZERO ohms

NP

2.2 uF

4.3pF

0.01 uFC5371

L5374

C5412

NP

NOT PLACED

MODEL CHART

0.1 uF

NOT PLACED

UHF

24 pF

100 nH

NP NP

NP

UHF

NOT PLACED

NOT PLACED

NOT PLACED

NP

VHF

C5410

C5380

IF5329

IF5328

R530175

IF5302

C5394

100pF

C5410

0.1uF

R5388

51C5381

8.2pF

IF5320

C53751pF

IF5312

IF5321IF5306

R539510K

R5387

1K

IF5303

C5402

100pF

L5374

100nH

C5377

16pF

C5398

100pF

IF5318

L5305

270nH

C5400

100pF

IF5301

C5411

2.2uF

IF5324

C53023.3pF

IF5323

R5390

0

IF5307

GN

D3

6

2OUT

1IN

Y5379

HFF101B

GN

D3

GN

D1

4 5G

ND

2

Y5378

HFF101A

GN

D3

GN

D1

4 5G

ND

2G

ND

36

2OUT

1IN

R538230

R5376

1K

C5303

0.1uF

Q5382 C5417470pF

C5418470pF

IF5336

IF5309

C53762.4pF 270nH

L5376

24pF

IF5326

C5412

IF5333

L5399

270nH

1pF

IF5334

C5379

C5401

100pF

R53862.2K

Q5390

IF5337

C5399

100pF

IF5313

C5415470pF

C5391

3.9pF

SHIELDE5302

C53725.6pF

R53781K

C5397

100pF

L530110nH

IF5330

C5387

12pF

IF5322

15VVR5371

R537933

IF5314

R53841K

IF5308

C5383.01uF

L5378

270nH

C5384.01uF

C5403

100pF

Q5388

IF5311

C5395

100pF

R5375

0

L5302180nH

IF5335

IF5332

IF5327

C53891pF

IF5315

IF5310

IF5300

C5371

.01uF

.01uF

IF5317

C5386

C5393

100pF

R53854.7K

IF5305

C5385.01uF

IF5331

L53801uH

1pFC5390

IF5316

IF5304

C5301

.01uF

C5396

100pF

C5392

100pF

L5381150nH

IF5319

E5301SHIELD

R5377

10

RF_REG_5V_5

2.1_MHz_1

SPI_TX_DATA_3

SPI_TX_DATA_3

RF_REG_12V_5

RF_REG_12V_5

SPI_TX_DATA_1

SPI_TX_DATA_1

IF_IN

IF_IN

CLK_1

CLK_1

RF_REG_5V_4

RF_REG_5V_4

9.3V_1

9.3V_1

IF_OUT

IF_OUT

RF_REG_5V_5_UHF

RF_REG_5V_5

9.3V_4

AUDIO_MOD_1

AUDIO_MOD_1

LOCK_DET_1

LOCK_DET_1

LOCK_DET_4

LOCK_DET_4

ROSC_SEL_1

ROSC_SEL_1

SW_B+_or_RX_CNTRL_1

SW_B+_or_RX_CNTRL_1

RX_CNTRL1

RX_CNTRL1

9.3V_3

9.3V_3

DISC_1

DISC_1

RSSI_1

RSSI_1

CLK_3

CLK_3

CLK_4

CLK_4

SPI_TX_DATA_4

SPI_TX_DATA_4

RF_REG_5V_3

RF_REG_5V_3

SYN_SEL_1

SYN_SEL_1

2.1_MHz_4

2.1_MHz_4

2.1_MHz_1

ZIF_SEL_1

ZIF_SEL_1

DISC_3

DISC_3

RSSI_3

RSSI_3

2.1_MHz_3

2.1_MHz_3

SYN_SEL_4

SYN_SEL_4

AUDIO_MOD_4

AUDIO_MOD_4

ROSC_SEL_4

ROSC_SEL_4

SQUELCH_3

SQUELCH_3

SQUELCH_1

SQUELCH_1

ZIF_SEL_3

ZIF_SEL_3

9.3V_4

63A81091C66-O

Receiver IF (Kits HUD4015B, HUD4019B)Schematic Diagram

PCB 84D015115Y08 (For Reference Only)

Page 65: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

VIEWED FROM SIDE 1

MAEPF-25472-A

C3210

C32

17

C32

18

C3219

C3229

C3232

C32

34

C32

35C3243

C3244

C3246

C32

47

C32

49

C3250

K

A

C

C

E

E

B

B

CR3201

CR

3203

E3201 E3202

L3204

L320

6

Q32

01

Q32

03

R3201R3202

R3205

R3206

R3210

R3211

R32

12R

3213

R3214

R32

19

R32

20

R3221

R3222

HEAVY COMPONENTS SIDE

C3201

C3202

C32

04

C3205

C32

06

C32

07

C32

08

C32

09

C3211

C3212

C32

13

C32

14

C32

15

C3216

C32

20

C3221

C3222 +

+

C32

23

C32

24

C3230

C32

33

C3245

CR32041

23

L3205

R3203

R32

04

R3207

R3215R3216

R3217

R32

18

U32011

39

38

40

3

5

36

37

4

2

21

23

25

17

19

2220 41

11 815

24 26

27 29 31 32 34

28 30 33 35

16

13 12 10 6

14 9 7

18

VIEWED FROM SIDE 2

MAEPF-25473-A

LIGHT COMPONENTS SIDE

RECEIVER BACK END COMPONENT LOCATIONS

2. Components shown in component location and schematic diagrams but not included in parts list are not placed.

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

CAPACITORS:C3201 2113932K15 0.1 uFC3202 2113930F51 100 pFC3204 2113743A23 0.22 uFC3205 2113932K15 0.1 uFC3206 2113932K15 0.1 uFC3207 2113743A23 0.22 uFC3208 2113932K15 0.1 uFC3209 2113932K15 0.1 uFC3210 2113930F51 100 pFC3211 2113743A19 0.100 uFC3212 2113743A23 0.220 uFC3213 2113743A23 0.220 uFC3214 2113741A45 10000C3215 2311049A02 0.15 uFC3216 2113932K15 0.1 uFC3217 2113930F45 56 pFC3218 2113930F51 100 pFC3219 2113930F31 15 pFC3220 2109720D14 0.1 uFC3221 2113931F17 470 pFC3222 2311049A07 1 uFC3223 2113932K15 0.1 uFC3224 2113932K15 0.1 uFC3229 2311049J23 10 uFC3230 2113932K15 0.1 uFC3232 2113931F29 1500 pFC3233 2113931F49 10000 pFC3234 2113930F03 1 pFC3243 2113931F49 10,000 pFC3244 2113931F49 10000 pFC3245 2113932K15 0.1 uF C3247 2113931F49 10,000 pF C3249 2113931F49 10,000 pF

DIODES:CR3201 4862824C01 VaractorCR3204 4880154K03 Dual Schottky mixer

RECEIVER BACK END PARTS LIST

Revision B, 03/99Receiver BackComponent L

SHIELDS:E3202 2605261V01 ZIF

INDUCTORS:L3204 2462587T15 100 nHL3205 2462587Q44 560 nHL3206 2462587T30 1000 nH

TRANSISTORS:Q3201 4882022N70 NPNQ3203 4882022N70 NPN

RESISTORS:R3201 0662057A81 22KR3202 0662057A89 47KR3203 0662057A59 2700R3204 0662057A59 2700R3205 0662057A49 1000R3206 0662057A01 10R3207 0662057A25 100R3210 0662057B47 0R3211 0662057A53 1500R3212 0662057A65 4700R3215 0662057B05 200KR3216 0662057A42 510R3218 0662057A51 1200R3219 0662057A65 4700R3220 0662057A81 22KR3222 0662057A49 1000R3213 0662057A49 1000R3214 0662057A33 220

INTERGRATED CIRCUITSU3201 5105457W94 Zero IF (ZIF)

PRINTED CIRCUIT BOARD (For Refer-ence Only)

84D05115Y06 For Kits HUD4015A, HUD4019A

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

NOTES:1. All resistance values are in ohms unless indicated

otherwise.

57 End (Kits HUD4015A, HUD4019A) ocations and Parts List

Page 66: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

58

0.22uF

0.22uF

0.22uF

0.1uF

NP

0.15uF

NP

NP

NP

NP

NP

ZIF_SEL_3

ZIF_SEL_3

CLK_3

CLK_3

SPI_TX_DATA_3

SPI_TX_DATA_3

2.1MHZ_3

2.1MHZ_3

0.1uF

0.22uF

RSSI_3

RSSI_3

IF_OUT

IF_OUT

DISC_3

DISC_3

SQUELCH_3

SQUELCH_3

220

C3250.01uF

RF_REG_5V_3 RF_REG_5V_6

AGC_3

R3214

C32050.1uF

C3222

1uF

C3215

IF3206

R3212

8.2K

Q3201

R32113.6K

IF3208

0.1uF

C3245

C3234

1pF

R3207

100

C3210100pF100pF

C3218

IF3203

C3249

.01uF

620R3221

.01uF

0.1uF

C3246C3247

CR3203

560nHL3205R3216

510

0.1uFC3201

22KR3201

R3202

1KR3205

47K

.01uFC3233

0.1uFC3223

C32080.1uF

C3244

.01uF

1uH

C3220

L3206 C3217

56pF

R3217

1.5K

IF3202

U3201

40

AG

C

14 BASE

37

C1 N

EG

36

C2 P

OS

33C3NEG

34C3POS

31C4NEG

32C4POS

21

CE

X

17

CO

L

19

DA

TA

7D

M B

YP

DM

IN

6

13 EMIT

1G

ND

38

C1 P

OS

35C2NEG

41

GN

D D

IEP

AD

5

8 GND DP1 DOWNMIXERS

RSS

90 DEGPHASESHIFT

DFM

SERIALDATAPORT

MAINLOOP

OFFSETLOOP

SECONDLOCAL

OSCILLATORSYNTH

OMPAC ZIF

RF AMP

BASEBANDFILTERS

UP CONVERSIONMIXERS

DEMODLIM

TP401

BANDPASSFILTERS

15 GND DP2

3G

ND

PR

EA

MP

39

GN

D V

AG

29

HF DEMOD

11 CHARGE PUMP 5V

20

CLK

5P

RE

AM

PO

UT

4P

RE

AM

P 5

V

2P

RE

AM

P IN

24

RA

MP

CA

P

22

RE

F C

LK

10 RSSI FLT

16

GN

D D

IEP

AD

3

26

GN

D D

IEP

AD

4

VAG 30

27VCC 2.5V

12 VCO 5V

25

VI B

YP

AS

S

18

IOU

T

23

OF

FS

ET

LO

OP

5V

C3211

RSSI OUT9

28

SUM DEMOD

C321410000pF

C32240.1uF

L3204

100nH

C3207

IF3207

C3219

15pFR3215

200K

.01uF

C3243

IF3200

C3204R32222K

E3201

E3202

CR3201

IF3201

R322022K

IF3210

10R3206

C3232.0015uF

C32300.1uF

1pFC3235

1K

2.7K

R3203

R3218

C3213

C3221470pF

R32100

R3213

0.1uFC3206

100

C3212

Q3203

R32042.7K

C32090.1uF

IF3205

IF3209

CR3204

2

3

1

C3202100pF

C32160.1uF

IF3204

R32194.7K

C322910uF

63A81084C40-A

Receiver Back End (Kits HUD4015A, HUD4019A)Schematic Diagram

PCB 84D015115Y06 (For Reference Only)

Page 67: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

C3210

C32

17

C32

18

C3219

C3229

C3232

C32

34

C32

35

C3243

C3244

C32

46

C32

47

C32

49

C3250

CR3201

CR3203

E3201

E3202

L3204

L320

6

Q32

01

Q32

03

R3201R3202

R3205

R3206

R3210

R3211

R3212

R32

13

R32

14

R32

19

R32

20

R3221

R3222

MAEPF-26647-O

HEAVY COMPONENTS SIDE

C3201

C3202

C32

04

C3205

C32

06

C32

07

C32

08

C32

09

C3211

C3212

C32

13

C32

14C

3215

C3216

C3220

C3221

C3222

C32

23

C3224

C3230

C32

33

C3245

CR

3204

L3205

R3203

R32

04

R3207

R3215R3216

R3217

R3218

4

2

1

39

38

5

6

7

8

3

40

36

37

35

34

33

3231

30

29

26

20 41

11

9

101213

14

15

16

18

22

24

27

28

25

23

21

19

17

U3201

MAEPF-26648-O

LIGHT COMPONENTS SIDE

RECEIVER BACK END COMPONENT LOCATIONS

2. Components shown in component location and schematic diagrams but not included in parts list are not placed.

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

CAPACITORS:C3201 2113932K15 0.1 uFC3202 2113930F51 100 pFC3204 2113743A23 0.22 uFC3205 2113932K15 0.1 uFC3206 2113932K15 0.1 uFC3207 2113743A23 0.22 uFC3208 2113932K15 0.1 uFC3209 2113932K15 0.1 uFC3210 2113930F51 100 pFC3211 2113743A19 0.100 uFC3212 2113743A23 0.220 uFC3213 2113743A23 0.220 uFC3214 2113741A45 10000C3215 2311049A02 0.15 uFC3216 2113932K15 0.1 uFC3217 2113930F45 56 pFC3218 2113930F51 100 pFC3219 2113930F31 15 pFC3220 2109720D14 0.1 uFC3221 2113931F17 470 pFC3222 2311049A07 1 uFC3223 2113932K15 0.1 uFC3224 2113932K15 0.1 uFC3229 2311049J23 10 uFC3230 2113932K15 0.1 uFC3232 2113931F29 1500 pFC3233 2113931F49 10000 pFC3234 2113930F03 1 pFC3243 2113931F49 10,000 pFC3244 2113931F49 10000 pFC3245 2113932K15 0.1 uF C3247 2113931F49 10,000 pF C3249 2113931F49 10,000 pF

DIODES:CR3201 4862824C01 VaractorCR3204 4880154K03 Dual Schottky mixer

RECEIVER BACK END PARTS LIST

Revision B, 03/99Receiver Back Component L

SHIELDS:E3202 2605261V01 ZIF

INDUCTORS:L3204 2462587T15 100 nHL3205 2462587Q44 560 nHL3206 2462587T30 1000 nH

TRANSISTORS:Q3201 4882022N70 NPNQ3203 4882022N70 NPN

RESISTORS:R3201 0662057A81 22KR3202 0662057A89 47KR3203 0662057A59 2700R3204 0662057A59 2700R3205 0662057A49 1000R3206 0662057A01 10R3207 0662057A25 100R3210 0662057B47 0R3211 0662057A53 1500R3212 0662057A65 4700R3215 0662057B05 200KR3216 0662057A42 510R3218 0662057A51 1200R3219 0662057A65 4700R3220 0662057A81 22KR3222 0662057A49 1000R3213 0662057A49 1000R3214 0662057A33 220

INTERGRATED CIRCUITSU3201 5186296A02 Zero IF (ZIF)

PRINTED CIRCUIT BOARD (For Refer-ence Only)

84D05115Y08 For Kits HUD4015B, HUD4019B

REFERENCESYMBOL

MOTOROLAPART NO.

DESCRIPTION

NOTES:1. All resistance values are in ohms unless indicated

otherwise.

59End (Kits HUD4015B, HUD4019B) ocations and Parts List

Page 68: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

60 Revision B, 03/99

NOT PLACED

NP

NP

NP

NP

NP

NP

C3210100pF

C3234

1pF

R3207

100

C3245

0.1uF

IF3208

R32111.5K

R3212

4.7K

Q3201

C3215

0.15uF

IF3206

C3205

0.1uF

C32221uF

C3250.01uF

R3214220

C32240.1uF

R3218

1.2K

C322910uF

C3202

100pF

IF3205

IF3209

C32090.1uF

R32042.7K

C3212

0.22uF

Q3203 R32131K

IF3204

R32100

C3221470pF

0.22uF

R3203

2.7K

C3213

0.1uF

1pF

C3216

C3235

R32194.7K

R320610

C32321500pF

22K

IF3210

R3220

C3244

.01uF

C32230.1uF

C3233.01uF

R320247K

R32051K

R320122K

C32010.1uF

510

L3205560nH

R3216

C3206

0.1uF

C32080.1uF

0.1uF .01uFC3246 C3247

620R3221

C3249.01uF

IF3203

C3218100pF

IF3201

SHIELDE3201

R32221K

C3204

0.22uF

IF3200

.01uF

R3215

200K

15pF

C3243

0.22uF

C3219

C3207

L3204

100nH

IF3207

SHIELDE3202

C3214.01uF

C32110.1uF

CR3201

IF3202

C3217

56pF

C32200.1uF

L3206

1uH

CR3204C3230

0.1uF

22

RSSI FLT10

9 RSSI OUT

28SUM DEMOD

30VAG

DEMODLIM

90 DEGPHASESHIFT

DFM

OMPAC ZIFRSS

DOWNMIXERS

RF AMP

BASEBANDFILTERS

BANDPASSFILTERS

UP CONVERSIONMIXERS

MAINLOOP

OFFSETLOOP

SERIALDATAPORT

SECONDLOCAL

OSCILLATORSYNTH

39V

AG

1

VCC 2_5V 27

VCO 5V12

VI B

YP

AS

S25

3

HFDEMOD 29

IOU

T18

OF

FS

ET

LO

OP

5V

23

5P

RE

AM

PO

UT

PR

EA

MP

5V

4 2P

RE

AM

P IN

RA

MP

CA

P24

RE

F C

LK

DM

IN

EMIT13

GN

D1

GN

D D

IEP

AD

316

GN

D D

IEP

AD

426

GN

D D

IEP

AD

541

GND DP18

GND DP215

GN

D P

RE

AM

P

C4NEG

32C4POS

CE

X21

CHARGE PUMP 5V11

CLK

20

CO

L17

DA

TA19

DM

BY

P7 6 40

BASE14

37C

1 N

EG

38C

1 P

OS

35C2NEG

36C

2 P

OS

33C3NEG

34C3POS

31

U320196A02

AG

C

CR3203

RF_REG_5V_3

AGC_3

R32171.5K

RF_REG_5V_6

DISC_3

DISC_3

2.1MHZ_3

2.1MHZ_3

SQUELCH_3

SQUELCH_3

SPI_TX_DATA_3

SPI_TX_DATA_3

CLK_3

CLK_3

ZIF_SEL_3

ZIF_SEL_3

RSSI_3

RSSI_3

IF_OUT

IF_OUT

63A81091C67-O

Receiver Back End (Kits HUD4015B, HUD4019B)Schematic Diagram

PCB 84D015115Y08 (For Reference Only)

Page 69: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

MAEPF-25470-A

C3750

C3751

5

K

123

A

NC

C

11

2

2

2

22

2

1

11

1

3

3

3

3 33

E B

13

2021 29

30

14 4

1

C3752

C3753

C3754

C3762

C3765

C37

66

C37

67

C37

76

C3778

VIEWED FROM SIDE 1

C37

79

C37

90

C37

91C3793

SC3800

SC3801

SC3802

CC

C

CC

C

B

B

B

E

E

BE E

E

BB

E

C37

94

C3795

C38

01

C3807

C38

08

C38

14

C38

18

C3820

C3838

C38

55

C38

56C3857

C38

58

C3902

C39

03

C39

04

C3905

C39

06

C39

08

C3909

C39

10

C39

11

C3912

C3913C3914

C39

15

C39

18

C3919

C3920

C39

21

C39

22

C39

23

CR3901

CR3902CR3903

CR3904

CR3905

CR3906

E3751E3752E3753

L3765

L379

8

L3901

L3902L3903

L3904

L3905

L3906

L3907

L3908

L390

9

L3910

L391

1

L3913

L3914

Q3781

Q37

82

Q3784

Q3790

Q39

03

Q3904

Q3905

R37

50

R37

81

R37

82

R3783

R3784 R3785

R37

86R

3787

R3792

R37

96R

3820

R38

54

R38

55

R3856

R3857

R38

58

R3861

R39

04R3905

R3908

R3909

R3911

R3912

R39

13R39

14

U3800

U3802

VR3800

MAEPF-25471-A

C3755

C3756C3757

C3758

C3759

C3760

C3761

C37

63

C3764

C37

68

C37

69

C37

70

C3771

C3772

C3775

C37

83

C3784

111

1

1

2

22

2

2

C

C

G G

D DS

1

2 3

S

C

1

1

1

2

2

2

3

33

4

4

4

5

5

5

1 3

46

C

B

B

E

B

B

E

E

E

+

+

+

+

+

3

3

3

3

3

45

+

C37

85

C3786

C37

87

C3788

C37

92

C3799

C38

00

C3804

C3805

C3806

C38

09

C38

10

C38

11

C38

13

C38

15

C3816

C3817

C3819

C3821

C38

22

C38

23

C38

24

C38

25

C3826

C38

27C

3828

C3829

C3830

C38

31

C3832

C38

33

C3835

C38

36

C38

37

C3839

C3840

C38

50

C3851

C38

53

C3854

CR3750

CR3751

CR3753

CR3754

CR3755

CR

3756

E3750

E3754

L379

7

L379

9L3

800 L3801

L380

2

L3807

L3897

L389

8

Q3750

Q3751

Q3760 Q3761

Q3770

Q37

80

Q37

83

Q3785

Q3786

Q37

89R3752R3753R3754

R3756R3757

R37

58

R37

59

R37

60

R3761

R3762

R3763

R3764

R3766

R3771

R37

73

R37

88

R3791

R3793

R3794

R37

95R

3799

R38

03

R38

04 R3805

R3811

R3812 R3813

R3814

R3815

R3816

R38

17

R3818

R38

19R

3821

R38

22

R3823

R3824

R38

50

R3851

R38

52

R3853

R3860

R3862

R3863

TP3800

TP3801

TP3802

TP3803

TP3804

TP3805

U3801

12

14

10

8

7

9

11 15

13 43 1 35

44 27 32

17 19 21 24

18 20 23 25

26

22 31 3328

29

30

34

36

16

5

6 2 37

4 41 38

3 42 40 39

VIEWED FROM SIDE 2

SYNTHESIZER COMPONENT LOCATIONS

HEAVY COMPONENTS SIDE

LIGHT COMPONENTS SIDE

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

CAPACITORS :C3751 2113932E07 0.022 uFC3753 2113932K07 0.047 uFC3754 2113932E07 0.022 uFC3755 2311049A19 10 uFC3757 2113932K15 0.1 uFC3758 2113932K15 0.1 uFC3759 2113932K15 0.1 uFC3760 2113932K15 0.1 uFC3761 2113740F67 470C3762 2113932E07 0.022 uFC3764 2311049J23 10 uFC3765 2113932K15 0.1 uFC3766 2311049J26 10 uFC3767 2113932K15 0.1 uFC3768 2113740F67 470C3770 2311049J26 10 uFC3772 2113930F07 1.5 pFC3775 2109720D14 0.1 uF

SYNTHESIZER PARTS LIST

C3776 2109720D14 0.1 uFC3778 0811051A19 1 uFC3779 2113931F49 10,000 pFC3784 2311049A07 1 uFC3787 2311049A07 1 uFC3790 2113932K15 0.1 uFC3791 2113932K15 0.1 uFC3792 2113932K15 0.1 uFC3794 2113930F20 5.1 pFC3795 2113930F51 100 pFC3799 2113932K15 0.1 uFC3800 2113932K15 0.1 uFC3801 2113931F49 10,000 pFC3805 2113932K15 0.1 uFC3807 2113930F34 20 pFC3808 2113930F34 20 pFC3810 2113932K15 0.1 uFC3811 2113932K15 0.1 uFC3813 2113740F67 470C3816 2113931F49 10,000 pFC3817 2113931F49 10,000 pF

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

C3818 2113931F49 10,000 pFC3819 2113930F20 5.1 pFC3820 2113931F49 10,000 pFC3821 2111078B33 43 pFC3822 2113930F09 1.8 pFC3823 2113930F15 3.3 pFC3824 2113930F23 6.8 pFC3825 2111078B38 68 pFC3826 2113931F49 10,000 pFC3827 2113930F03 1 pFC3828 2113930F22 6.2 pFC3829 2113930F23 6.8 pFC3830 2113930F20 5.1 pFC3831 2113930F23 6.8 pFC3832 2111078B38 68 pFC3833 2113930F03 1 pFC3835 2113931F49 10,000 pFC3836 2113931F49 10,000 pFC3839 2111078B33 43 pFC3840 2311049A07 1 uFC3850 2113743A23 0.22 uF

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

C3851 2113743A23 0.22 uFC3855 2113740F67 470C3856 2113931F49 10,000 pFC3858 2113931F49 10,000 pFC3902 2113930F31 15 pFC3903 2113930F33 18 pFC3904 2113930F27 10 pFC3905 2113930F25 8.2 pFC3906 2113740F67 470C3908 2113930F34 20 pFC3909 2113930F33 18 pFC3910 2113930F22 6.2 pFC3911 2113930F24 7.5 pFC3912 2113740F67 470C3913 2113930F25 8.2 pFC3914 2113930F24 7.5 pFC3915 2113740F67 470C3918 2113930F22 6.2 pFC3919 2113930F26 9.1 pFC3920 2113740F67 470C3921 2113740F67 470C3922 2113930F29 12 pFC3923 2113930F29 12 pF

DIODES:CR3750 4802233J09 TripleCR3751 4813833C02 DualCR3753 4805649Q13 VaractorCR3754 4805649Q13 VaractorCR3755 4813833C02 DualCR3756 4805649Q13 VaractorCR3901 4805649Q13 VaractorCR3902 4805649Q13 VaractorCR3903 4805649Q13 VaractorCR3904 4805649Q13 VaractorCR3905 4805129M05 Hot carrierCR3906 4805129M05 Hot carrierVR3800 4813830A23 10V Zener

SHIELDS:E3750 2602658J02 FRAC NE3751 2602660J02 L.O. bufferE3752 2602660J02 TX injection stringE3753 2605782V04 RX VCOE3754 2602658J02 TX VFO

INDUCTORS:L3765 2462587Q40 270 nHL3797 2462587T30 1000 nHL3798 2462587T30 1000 nHL3799 2462587T42 47 nHL3800 2462587T30 1000 nHL3801 2462587T30 1000 nHL3802 2462587T12 56 nHL3807 2462587Q40 270 nHL3897 2462587T30 1000 nHL3898 2462587T30 1000 nHL3901 2405452C59 CoilL3902 2405452C59 CoilL3903 0105953T96 Helical 4.5 turnsL3904 2405452C59 CoilL3905 2405452C59 CoilL3906 2405452C59 CoilL3907 0105953T96 Helical 4.5 turns

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

L3908 2405452C59 CoilL3909 2462587V32 68 nHL3910 2462587V32 68 nHL3911 2462587V29 39 nHL3913 2405452C66 CoilL3914 2405452C66 Coil

TRANSISTORS:Q3750 4805128M16 PNPQ3751 4805128M16 PNPQ3760 4880141L06 FETQ3761 4880141L06 FETQ3770 4805128M16 PNPQ3780 4805921T04 Dual, switchingQ3781 4882022N70 NPNQ3782 4882022N70 NPNQ3783 4805921T04 Dual, switchingQ3784 4882022N70 NPNQ3785 4805921T04 Dual, switchingQ3786 4805921T04 Dual, switchingQ3789 4882022N70 NPNQ3790 4882022N70 NPNQ3903 4880141L06 FETQ3904 4880141L06 FETQ3905 4882022N70 NPN

RESISTORS:R3750 0662057A65 4700R3752 0662057A81 22KR3753 0662057B02 150KR3754 0662057A53 1500R3756 0662057A81 22KR3757 0662057B02 150KR3758 0662057A57 2200R3759 0662057A49 1000R3760 0662057A49 1000R3761 0662057A25 100R3762 0662057A41 470R3763 0662057A49 1000R3764 0662057A65 4700R3766 0662057A73 10KR3767 0662057B47 0R3768 0662057B47 0R3771 0662057A37 330R3773 0662057A25 100R3781 0662057A37 330R3782 0662057A01 10R3783 0662057A37 330R3784 0662057A53 1500R3785 0662057A01 10R3786 0662057A65 4700R3787 0662057A37 330R3788 0662057A25 100R3791 0662057A53 1500R3792 0662057A09 22R3793 0662057A65 4700R3794 0662057A37 330R3796 0662057A29 150R3799 0662057A53 1500R3804 0662057A18 51R3805 0662057A18 51R3811 0662057A49 1000R3812 0662057A65 4700R3813 0662057A29 150

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

Revision B, 03/99

R3814 0662057A13 33R3815 0662057B05 200KR3816 0662057A73 10KR3817 0662057A81 22KR3819 0662057A09 22R3820 0662057A81 22KR3821 0662057A09 22R3823 0662057A09 22R3824 0662057A09 22R3850 0662057A89 47KR3851 0662057A89 47KR3852 0662057A89 47KR3853 0662057A77 15KR3854 0662057A81 22KR3855 0662057A09 22R3856 0662057A42 510R3857 0662057A59 2700R3858 0662057A49 1000R3861 0662057A65 4700R3862 0662057A09 22R3904 0662057A23 82R3905 0662057A37 330R3908 0662057A65 4700R3909 0662057A49 1000R3911 0662057A37 330R3912 0662057A83 27KR3913 0662057A23 82R3914 0662057A83 27K

INTEGRATEDCIRCUITS:

U3800 5105385Y26 16.8 MHz refernece oscillator

U3801 5105457W73 HybridU3802 5113816A07 5V regulator

PRINTED CIRCUIT BOARD (For Refer-ence Only)

84D05115Y06 For Kits HUD4015A, HUD4019A

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

NOTES:1. All resistance values are in ohms unless indicated

otherwise.

2. Components shown in component location and schematic diagrams but not included in parts list are not placed.

61Synthesizer (Kits HUD4015A, HUD4019A) Component Locations and Parts List

Page 70: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

62

3

HIGH VCO

LOW VCO

5

PA_CNTRL_LIM_9

A+_2_2A+_9_2

SYN_SEL_4 GNDD_9

PA_TEMP_9

9.3V_4

AUDIO_MOD_4

K9.1_2

GND_9_2_10

PA_CNTRL_9

CURRENT_SENSE-_9

CURRENT_SENSE+_9

VFORWARD_9

LO_INJ_HS

PA_CNTRL_LIM_2

VFORWARD_2

K9.1_9

PA_TEMP_2

PA_CNTRL_2

CURRENT_SENSE-_2

CURRENT_SENSE+_2

ANA_GND

7

DCWARP27

TX_INJ

2.1MHZ_4

RF_REG_5V_4

SPI_TX_DATA_4

CLK_4

ROSC_SEL_4

A+_2_3A+_9_3

LOCK_DET_4

NC1119NC122028

U3800

EN_CE23

C_EXT

NC33

NC445

DE9

DET8

F_OUT10

NC11

NC1018

25SI

SO21

SS

NC13NC14

29NC1530NC1631NC1732

NC22

NC5NC6

6

NC715

NC816

NC917

SCK22

IF3710

24

13

VD

D1

14

VD

D2

V_OPT12

V_REG11

GN

D

26

R3821

C37600.1uF

C3851.220uF

22

1uH

IF3709

L3801

C3830

C3838470pF

470pFC3788

5.1pF

CR3755

1

23

E3751

Q3783

5 3

1 24

IF3711

330

R3771

33R3814

IF3704

IF3728

R3786

4.7K

IF3717

CR3754

2

13

IF3714

I1 2I2

E3753

1I1

SC38001

C3770

SC

3802

2I2

IF3719

0.1uF

C3790

10uF

470pFC3769

IF3722

CR3751

1

23

R379222

IF3712

C3791

0.1uF

IF3736

Q3750

CR37531

23

4.7K

R3861

R3752

22K

1uFC3784

C3824

6.8pF

470pF

C3855

470pF

C3814

.01uF

L3798

IF3721

C3826

1uH

IF3734

E3754

R3794

330

0.1uFC3767

R3860330

IF3703

68pF

C3825

R3856510

C38221.8pF

C3754.022uF

IF3726

R3781330

IF3701

C38296.8pF

C3753.047uF

1KR3811 R3863

10

0.1uFC3758

0.1uFC3776

C375510uF

C3763470pF

0

IF3706

R3782

10

5.1pFC3819

R3803

Q3790

C3827

1pF

C376610uF

330R3783

Q3760

R37582.2K

D

G

S

1K

R3763

10KR3816

.022uFC3762

0.1uFC3799

10uF

C3764

3.3pFC3823

C3752470pF

C3804

4.7K

R385315K

0.1uF

270nHL3807

R3764

TP3804

0.1uFC3792

10R3785

IF3708

R3822

R37504.7K

270nH

10R3818

10

R3823

L3765

Q3786

43pF

C3839

5 3

1 24

22

47K

R3850

.220uF

22KR3817

TP3802

C3850

E3752

C3801.01uF

R3812

4.7K

R3805

51

Q3784

10VVR3800

C3816

150K

R3757

IF3700

.01uF

Q3770

IF3723

C38096.2pF

470pF

C3783

C3857.01uF

56nH

L3802

C3800

0.1uF

1uFC3778

Q3782

C3750470pF

100pF

C3795

0.1uFC3759

IF3702

3.3pFC3793

C38100.1uF

Q3751

IF3707

C3756470pF

IF3730

TP3805

20pF

C3808

IF3715

Q3781

6.8pF

C3831

C3832

68pF

.01uF

C3820

R3793

4.7K

C37750.1uF

C3807

20pF

R3813150

R386239

R385147K

1.5KR3791

R3804

C3771470pF

.022uFC3751

51

Q3789

TP3800

R3815200K

TP3801

E3750

22K

R3756

IF3731

IF3718

R3795

1uH

L3897

150

C3786

470pF

C3768

470pF

1pF

C3833

C3772

470pFC3837

0.1uF

C3811

1.5pF

.01uF

C3836

IF3725

U3802

GN

D

2

1INPUT OUTPUT

3

1.5KR3799

CR37562

13

22K

IF3732

IF3724

Q3761

C37945.1pF

R3854

R382022K

D

G

SL37971uH

R3788

100

C3840

C3815

470pF

150R3796

C3805

0.1uF

B+CNTR_LINE1

CNTR_LINE2RF_OUT

SWTCHNG1

SWTCHNG2

1uF

C3785470pF

Q3785

1 24

L3799

47nH

SC38011

I12

I2

C37570.1uF

C3854470pF

R37601K

C3821

43pF

470pFC3813

R385522

C3761

470pF

3

1 2

TP3803

22

Q3780

5

4

R3824

.01uF

C3858

C3818

.01uF

L3898

1uHU3801

AUX2 39AUX3 40AUX4

CE4

3CLK

29CPBIAS1

IF3705

VE

E1

11

VC

C1

25

VC

C2

VC

C3

42

10FREFOUT

1G

ND

1

35ADAPTSW

37AUX1 38

GN

D4

34IADAPT

32IOUT

LOCK41

5MODIN

30MODOUT

28CPBIAS2

2DATA

23

43

NC344

21PREIN

PVREF24

SUPFBASE18 SUPFCAP17

13

GN

D2

22

GN

D3

33

TST1 27TST2

A/D BYPASS12

36

VE

E2

9VMULT1 8VMULT2

NC16

NC131

NC2

14XTAL1XTAL2

15

20SUPFIN

SUPFOUT19

26

R3753

150K

7VMULT3 6VMULT4

R38572.7K

.01uF

C3856

R3858

C3835.01uF

1K

470

R3762

R3852 IF3720

47K

CR37504

A1

5A2

6A3

3K1

2K2

1K3

R3784

R3761100

C38286.2pF

22R3819

1.5K

C3779

.01uF

.01uF

C3817

330R3787

R37591K 1uH

L3800

10K

R3766

R37541.5K

C37871uF

IF3713

C38062.2pF

C3765

R3773100

470pFC3853

IF3716

IF3729

0.1uF

63A81084C41-A

PCB 84D015115Y06 (For Reference Only)

Synthesizer (Kits HUD4015A, HUD4019A)Schematic Diagram

Page 71: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99 63

LOW SIDE

HIGH SIDE

C390410pF

CNTR_LINE1

6.2pF

RF_OUT

SWTCHNG1

CNTR_LINE2

C3918

C3908

20pF

SWTCHNG2

B+

CR3906

C39106.2pF

1

C3920

470pF

CR3901

2

3

C3902

15pF

910nh

L3905

910nh

L3901 C3906470pF

C3915470pF

910nhL3904

8.2pF

C3913

330R3911

Q3905

C3912470pF

C392312pF

C39199.1pF

12pFC3922

1KR3909

CR3903

12

3

C3911

7.5pF

L3910

68nH

27K

R3914

L390968nH

R390482

4.7K

R3908

C3903

18pF

1D

3

G

2S

L3906

910nh

Q3903

CR3904

12

3

330

R3905

R391227K

L3902

910nh

C39058.2pF

C3914

7.5pF

CR3902

12

3

L39131800nh

L390318nH

L3911

39nH

L39141800nh

470pFC3921

Q3904

D 1G

3

S 2

L390718nH

82R3913

C3909

CR3905

L3908910nh

18pF

63A81084C42-A

PCB 84D05115Y06 (FOR REFERENCE ONLY)

Synthesizer Receiver VCO (Kits HUD4015A, HUD4019A) Schematic Diagram

Page 72: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

C3750

C3751

C37

52

C3753

C3754

C3762

C3765

C3766

C37

67

C37

75C37

76 C37

79

C3786

C37

87

C37

90

C37

91

C3793

C37

94

C37

95

C38

01

C3807

C38

08

C3810

C38

14

C38

20

C38

55

C38

56

C3857

C38

58

C3902

C39

03

C39

04

C3905

C39

06

C3908

C39

09

C39

10

C39

11

C39

12

C3913

C3914

C3915C

3918

C39

19 C3920

C39

21C

3922

C39

23

C3925

C3926

C3927

C3928

C3929

C3930CR3901

CR3902 CR3903

CR3904

CR

3905

CR3906

E3751E3752

E3753

L3765

L379

8

L390

1L3

902

L3903

L390

4

L390

5

L3906

L3907

L390

8

L390

9

L3910

L391

1

L391

3

L391

4

Q3781

Q37

82

Q3784

Q3790

Q39

03

Q3904

Q3905

R3750

R37

60

R37

61

R37

62

R37

67

R3768

R37

81

R37

82

R37

83

R3784

R3785

R37

86R

3787

R3792

R37

96R

3820

R38

54

R38

55

R3856

R3857

R38

58

R3861

R39

04

R3905

R3908

R39

09

R39

11

R3912R

3913

R39

14

13

14

20

21 29

30

5

4

1U3800

U3802

VR

3800

MAEPF-26651-O

C3755

C3756

C3757

C3758

C3759

C3760

C3761C3764

C3768

C37

69

C3770

C3772

C37

83

C3784

C37

92

C3799

C38

00

C3804

C3805

C3806

C38

09

C38

11

C38

13

C38

15

C3816

C3817

C3818

C3819

C3821

C3822C38

23

C3824

C38

25C38

26

C38

27

C38

28

C3829

C3830

C38

31

C3832

C38

33

C38

35

C3836

C3839

C38

40

C3850

C3851

C38

53

C38

54

C3931C3932

C3933 C3934

CR3750

CR3751

CR3753

CR

3754

CR3755

CR

3756

E3750

E3754

L379

7

L379

9L3

800 L3801

L380

2

L3807

L3897

L389

8

Q3750

Q3751

Q3760 Q3761

Q37

70

Q37

80

Q37

83

Q3785

Q3786

Q37

89R3752R3753

R3754

R3756 R3757

R37

58

R37

59

R37

63

R3764

R3766

R3771

R37

73

R37

88

R3791

VIEWED FROM SIDE 2

R3793

R3794

R37

95

R37

99

R38

04

R3805

R3811 R3812R3813

R3814

R3815

R3816

R3817

R38

18

R38

19R

3821

R38

22R

3823

R38

24

R38

50

R3851

R38

52

R3853

R3860

R3862

R3863

TP3800

TP3801

TP3802

TP3803

TP3804

TP3805

12

7

28

36

25

16

18

1

39

34

30

29

35

32

26

38

37

27

33

24

2320

21

31

44

43

2

41

40423

4

6

5

9 13

1511

22

1917

14

10

8

U3801

MAEPF-26652-O

SYNTHESIZER COMPONENT LOCATIONS

HEAVY COMPONENTS SIDE

LIGHT COMPONENTS SIDE

1. All resistance values are in ohms unless indicated otherwise.

2. Components shown in component location and schematic diagrams but not included in parts list are not placed.

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

CAPACITORS :C3751 2113932E07 0.022 uFC3753 2113932K07 0.047 uFC3754 2113932E07 0.022 uFC3755 2311049A19 10 uFC3757 2113932K15 0.1 uFC3758 2113932K15 0.1 uFC3759 2113932K15 0.1 uFC3760 2113932K15 0.1 uFC3761 2113740F67 470C3762 2113932E07 0.022 uFC3764 2311049J23 10 uFC3765 2113932K15 0.1 uFC3766 2311049J26 10 uFC3767 2113932K15 0.1 uFC3768 2113740F67 470C3770 2311049J26 10 uFC3772 2113930F07 1.5 pFC3775 2109720D14 0.1 uF

SYNTHESIZER PARTS LIST

C3776 2109720D14 0.1 uFC3779 2113931F49 10,000 pFC3784 2311049A07 1 uFC3787 2311049A07 1 uFC3790 2113932K15 0.1 uFC3791 2113932K15 0.1 uFC3792 2113932K15 0.1 uFC3794 2113930F20 5.1 pFC3795 2113930F51 100 pFC3799 2113932K15 0.1 uFC3800 2113932K15 0.1 uFC3801 2113931F49 10,000 pFC3805 2113932K15 0.1 uFC3807 2113930F34 20 pFC3808 2113930F34 20 pFC3810 2113932K15 0.1 uFC3811 2113932K15 0.1 uFC3813 2113740F67 470C3816 2113931F49 10,000 pFC3817 2113931F49 10,000 pF

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

C3818 2113931F49 10,000 pFC3819 2113930F20 5.1 pFC3820 2113931F49 10,000 pFC3821 2111078B33 43 pFC3822 2113930F09 1.8 pFC3823 2113930F15 3.3 pFC3824 2113930F23 6.8 pFC3825 2111078B38 68 pFC3826 2113931F49 10,000 pFC3827 2113930F03 1 pFC3828 2113930F22 6.2 pFC3829 2113930F23 6.8 pFC3830 2113930F20 5.1 pFC3831 2113930F23 6.8 pFC3832 2111078B38 68 pFC3833 2113930F03 1 pFC3835 2113931F49 10,000 pFC3836 2113931F49 10,000 pFC3839 2111078B33 43 pFC3840 2311049A07 1 uFC3850 2113743A23 0.22 uF

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

C3851 2113743A23 0.22 uFC3855 2113740F67 470C3856 2113931F49 10,000 pFC3858 2113931F49 10,000 pFC3902 2113930F33 18 pFC3903 2113930F33 18 pFC3904 2113930F20 5.1 pFC3905 2113930F22 6.2 pFC3906 2113740F67 470C3908 2113930F35 22 pFC3909 2113930F35 22 pFC3910 2113930F25 8.2 pFC3911 2113930F27 10 pFC3912 2113740F67 470C3913 2113930F25 8.2 pFC3914 2113930F24 7.5 pFC3915 2113740F67 470C3918 2113930F22 6.2 pFC3919 2113930F26 9.1 pFC3920 2113740F67 470C3921 2113740F67 470C3922 2113930F29 12 pFC3923 2113930F29 12 pFC3925 2109720D14 0.1 uFC3926 2109720D14 0.1 uFC3927 2109720D14 0.1 uFC3928 2109720D14 0.1 uFC3929 2109720D14 0.1 uFC3930 2109720D14 0.1 uFC3931 2109720D14 0.1 uFC3932 2109720D14 0.1 uFC3933 2109720D14 0.1 uFC3934 2109720D14 0.1 uF

DIODES:CR3750 4802233J09 TripleCR3751 4813833C02 DualCR3753 4805649Q13 VaractorCR3754 4805649Q13 VaractorCR3755 4813833C02 DualCR3756 4805649Q13 VaractorCR3901 4805649Q13 VaractorCR3902 4805649Q13 VaractorCR3903 4805649Q13 VaractorCR3904 4805649Q13 VaractorCR3905 4805129M41 Hot carrierCR3906 4805129M41 Hot carrierVR3800 4813830A23 10V Zener

SHIELDS:E3750 2602658J02 FRAC NE3751 2602660J02 L.O. bufferE3752 2602660J02 TX injection stringE3753 2605782V04 RX VCOE3754 2602658J02 TX VFO

INDUCTORS:L3765 2462587Q40 270 nHL3797 2462587T30 1000 nHL3798 2462587T30 1000 nHL3799 2462587T42 47 nHL3800 2462587T30 1000 nHL3801 2462587T30 1000 nHL3802 2462587T12 56 nH

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

L3807 2462587Q40 270 nHL3897 2462587T30 1000 nHL3898 2462587T30 1000 nHL3901 2462587T30 CoilL3902 2462587T30 CoilL3903 2460593801 Helical 4.5 turnsL3904 2462587T30 CoilL3905 2462587T30 CoilL3906 2462587T30 CoilL3907 2460593801 Helical 4.5 turnsL3908 2462587T30 CoilL3909 2462587V32 68 nHL3910 2462587V32 68 nHL3911 2462587V29 39 nHL3913 2462587T30 CoilL3914 2462587T30 Coil

TRANSISTORS:Q3750 4805128M16 PNPQ3751 4805128M16 PNPQ3760 4880141L06 FETQ3761 4880141L06 FETQ3770 4805128M16 PNPQ3780 4805921T04 Dual, switchingQ3781 4882022N70 NPNQ3782 4882022N70 NPNQ3783 4805921T04 Dual, switchingQ3784 4882022N70 NPNQ3785 4805921T04 Dual, switchingQ3786 4805921T04 Dual, switchingQ3789 4882022N70 NPNQ3790 4882022N70 NPNQ3903 4880141L06 FETQ3904 4880141L06 FETQ3905 4882022N70 NPN

RESISTORS:R3750 0662057A65 4700R3752 0662057A81 22KR3753 0662057B02 150KR3754 0662057A53 1500R3756 0662057A81 22KR3757 0662057B02 150KR3758 0662057A57 2200R3759 0662057A49 1000R3760 0662057A49 1000R3761 0662057A25 100R3762 0662057A41 470R3763 0662057A49 1000R3764 0662057A65 4700R3766 0662057A73 10KR3767 0662057B47 0R3768 0662057B47 0R3771 0662057A37 330R3773 0662057A25 100R3781 0662057A37 330R3782 0662057A01 10R3783 0662057A37 330R3784 0662057A53 1500R3785 0662057A01 10R3786 0662057A65 4700R3787 0662057A37 330R3788 0662057A25 100R3791 0662057A53 1500

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

64 Synthesizer (KComponent L

R3792 0662057A09 22R3793 0662057A65 4700R3794 0662057A37 330R3796 0662057A29 150R3799 0662057A53 1500R3804 0662057A18 51R3805 0662057A18 51R3811 0662057A49 1000R3812 0662057A65 4700R3813 0662057A29 150R3814 0662057A13 33R3815 0662057B05 200KR3816 0662057A73 10KR3817 0662057A81 22KR3819 0662057A09 22R3820 0662057A81 22KR3821 0662057A09 22R3823 0662057A09 22R3824 0662057A09 22R3850 0662057A89 47KR3851 0662057A89 47KR3852 0662057A89 47KR3853 0662057A77 15KR3854 0662057A81 22KR3855 0662057A09 22R3856 0662057A42 510R3857 0662057A59 2700R3858 0662057A49 1000R3861 0662057A65 4700R3862 0662057A09 22R3904 0662057A23 82R3905 0662057A37 330R3908 0662057A65 4700R3909 0662057A49 1000R3911 0662057A37 330R3912 0662057A83 27KR3913 0662057A23 82R3914 0662057A83 27K

INTEGRATEDCIRCUITS:

U3800 5105385Y26 16.8 MHz refernece oscillator

U3801 5105457W98 HybridU3802 5113816A07 5V regulator

PRINTED CIRCUIT BOARD (For Refer-ence Only)

84D05115Y08 For Kits HUD4015B HUD4019B

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

NOTES:

Revision B, 03/99its HUD4015B, HUD4019B) ocations and Parts List

Page 73: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99 65

N/P

HIGH VCO

N/P

N/P

N/P

N/P

LOW VCO

N/P

N/P

N/P

N/P

N/P

N/P

N/P

N/P

N/P

N/P

N/P

N/P

N/P

N/P

N/P

470pF

IF3710C3752

C3856

.01uF

1.5K

SHIELDE3753

IF3714

R3784

SC38001 I1 2I2

C38286.2pF

IF3711

0.1uF

C3930C3925

0.1uF

R3771330

C3833

1pF

C3772

1.5pF

0.1uF

C3928

C38100.1uF

IF3734

C3795

100pF

IF3730

Q3751 R3787330

R3766

10K

IF3704

R3781330

C38296.8pF

1.5K

IF3713

.01uF

R375422

C3818

0.1uF

R3824

33

C3929

0.1uF

R3814

IF3717

C3767

IF3728

C3831

6.8pF

R3799

1.5K

C3761

470pF

TP3803

1K

R385522

22

R37591uH

R3819

.01uF

L3800

IF3725

C3817

C3813

470pF

R3768

0

C3800

0.1uF

R3860330

IF3705

R38572.7K

C38233.3pF

R382322

CR3755

L38011uH

SC

3802

1I1

2I2

C3779

.01uF

0.1uF

C3934C3933

0.1uF0.1uF

C3932C3931

0.1uF

C3840

1uF

0.1uF

C3926 C3927

0.1uF

C3826

.01uF

IF3701

3.3pF

C37590.1uF

C3793

C38221.8pF

IF3703

Q3781

1

23

L37981uH

0.1uF

CR3751

1

23

C3790

CR3754

R386310

C3835.01uF

C3808

20pF

IF3715

L3898

1uH

C3756470pF

TP3805

C3811

0.1uF

MC78M05U3802

GN

D

2

1 IN 3OUT

C3801

.01uF

Q3784

C3783

.01uF

IF3732

E3754SHIELD

R385422K

R3773100

CR37561

23

IF3729

C38305.1pF

R385147K

IF3709

Q3783RF_OUT

SWTCHNG1

SWTCHNG2

R3788

100

C3805

0.1uF

B+CNTR_LINE1

CNTR_LINE2

R381810

0R3767

5.1pF

Q3782

1pF

C3819

IF3702

C3827

D

S

IF3707

Q3760

C377010uF

C38096.2pF

Q3770

.01uFC3857

L3802

56nH

R38581K

R3762

470

.01uF

IF3720

C3786

C3836

.01uF

R3805

51

SHIELDE3752

C3754.022uF

IF3724

C37990.1uF

R381610K

C37945.1pF

R3752

22K

C37650.1uF

C38062.2pF

C3824

6.8pF

C37841uF

1

R3753

150K

TP3802

C3758

0.1uF1K

C375510uF

R3811

47K

10

R3850

C37920.1uF

R3785

TP3804

R37504.7K

TP3801

C3764

10uF IF3731

R3796150

C3821

43pF

C3766

10uF

R3783330

Q3785

.01uF

IF3736

C3816

C3791

0.1uF

47K

Q3750

100

R3852

C3769470pF

R3761C38500.22uF

R37582.2K

R3763

1K

R3817

22K

R3812

4.7K

C3825

68pF

510

IF3726

R3856

R3815200K

D

S

SHIELDE3750

Q3761

IF3723

10VVR3800

C3832

68pF

C3820

.01uF

150K

IF3700

R3757

R3861

4.7K

C3751.022uF

L3897

1uH

C3814

470pF

VREG 11

C3855

470pF

NC

1

NC

2

NC

3

SI25

SO 21

SS24

VD

D13

VOPT12

NC

30

NC

31

NC

32

NC15

NC16

NC17

NC18

NC19

FO_SQWAVE 10

26G

ND

NC14

NC

4

NC

5

NC

6

NC

28

NC

29

BG20

CEXT 7CKL_S22

DCWARP27

DE9

DET_SINE 8EN_CE23

*U3800*

16.8MHz85Y42

R379222

C3839

43pF

C3853470pF

R37911.5K

L37971uH

IF3718

C3815

470pF 47nH

L3799

1

23

IF3719

C3858

.01uF

CR3753

IF3712

IF3721

IF3722R382022K

330

R3794

R386222

20pF

150 C3807R3813

C38510.22uF

R3795150

C3768

470pF

IF3716

9VMULT1 8VMULT2 7VMULT3 6VMULT4

14XTAL115XTAL2

18 SUPFBASE

17 SUPFCAP

20SUPFIN

19SUPFOUT

26TST127TST2

12 VBPASS36

VE

E2

5MODIN

30MODOUT

16 NC31 NC43 NC44 NC

21 PREIN

24 PVREF

10FREFOUT

1G

ND

113

GN

D2

22G

ND

333

GN

D4

34IADAPT

32IOUT

41LOCK

29 CPBIAS128 CPBIAS2

2DATA

23V

EE

1

11V

CC

1

25V

CC

2

42V

CC

3

4 EN_CE

35ADAPTSW

37AUX138AUX239AUX340AUX4

3 CLK*U3801*

FRACN_F55G_5

SHIELDE3751

R3782

10

IF3706

C3804

0.1uF

R3804

51

C37871uF

R3756

22K

R385315K

4.7K

270nH

R3764

L3807

Q3786

C3760 0.1uF

C3854470pF

C37570.1uF

SC38011 I1 2I2

R37601K

Q3790

C3776

0.1uF

L3765270nH

R382210

IF3708

K2K3

C3753.047uF

CR3750A1A2A3

K1

470pF

Q3780

C3750

R3786

4.7K

Q3789

TP3800

R382122

.022uF

4.7K

C3762

0.1uF

R3793

SPI_TX_DATA_4

RF_REG_5V_4

C3775

LO_INJ_HS

LOCK_DET_4

A+_2_3A+_9_3

K9.1_2

2.1MHZ_4

TX_INJ

GND_9_2_10

AUDIO_MOD_4

K9.1_9

PA_TEMP_2

PA_CNTRL_2

CURRENT_SENSE-_2

CURRENT_SENSE+_2

ANA_GND

PA_CNTRL_LIM_2

VFORWARD_2

CLK_4

SYN_SEL_4

GNDD_9

PA_TEMP_9

PA_CNTRL_9

CURRENT_SENSE-_9

CURRENT_SENSE+_9

VFORWARD_9

PA_CNTRL_LIM_9

A+_2_2A+_9_2

ROSC_SEL_4

9.3V_4

63A81091C69-O

PCB 84D05115Y08 (For Reference Only)

Synthesizer (Kits HUD4015B, HUD4019B)Schematic Diagram

Page 74: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

66 Revision B, 03/99

LOW SIDE

27K

HIGH SIDE

C3903

18pF

SWTCHNG1

CNTR_LINE2

RF_OUT

SWTCHNG2

B+

CNTR_LINE1

L390968nH

R3914

L3907

RESONATOR18.00MHz

1uH

CR3905

5.1pF

L3908

22pF

C3904

6.2pF

C3909

C3914

7.5pF

C3918Q3905

C3920

470pF

CR3902

C392312pF

C392212pF

C3912470pF

C39199.1pF

L3914

1uH

C3902

18pF

10pF

L3906

1uH

C3911

Q3903

D

S

CR3904

C39056.2pF

L3902

1uH

R3911330

L39131uH

L3911

39nH

C3921470pF

CR3903

R3909

1K

R390482

R3908

4.7K

C3915

470pF

CR3906

CR3901

D

S

330

Q3904

L3910

68nH

R3905

82L3901

1uH

R3913C3906470pF

L3905

1uH

L39041uH

C3913

8.2pF

C3908

22pF

R3912

27K C3910

8.2pF

L3903RESONATOR18.00MHz

O.K. AS IS

O.K. AS MARKED

( )

( )

ISS. REVISION RLSE.

CORRECTEDASMARKED

RLSE.LETTERING SIZE:REQUIRES:

EDITOR DATECHECKERDATE

JP

O

EH

2/12/99

63A81091C70-O

PCB 84D05115Y08 (FOR REFERENCE ONLY)

Synthesizer Receiver VCO (Kits HUD4015B, HUD4019B) Schematic Diagram

Page 75: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99 67

POWER AMPLIFIER COMPONENT LOCATIONS

MAEPF-25477-A

C350

5

C351

0

C3511

C351

2

C352

0

C352

1

C3522

C3540C3541C3542

C3543

C3544

C355

0C3

551

C3560C3561

C356

2

C3565

C3566C356

7

C356

8

C356

9

C3572

C3573

C357

4

C357

5

C3576

C3577

C3578

C3579

C3580

C3581

C3582C3583

C3584

C3586

C3587

C358

8

C3589

C3591

C3592

C3593

C3594

C3596

C359

8

C360

1

C360

2

C3620

C362

3

C3630

C3631

C3633

C364

0

C364

1

C3650

C3651

CR3580CR3581

CR3584

CR3600

H3520

H3560

H358

0

12 1J3500J3501

12

J3502

3

1

2

J3503

L350

0

L3502

L352

0

L3560

L3561

L3562

L356

3

L3564

L3565

L3566

L3567L3580

L3581

L358

2 L358

3

L359

0

L3591L359

2

L3593

L3600

L3611 L3612

L3620

8 5

41Q3500

R352

5

R352

8

R3558R3559 R3560

R356

1

R3562

R3563

R3565

R356

6

R3567

R3568

R356

9

R3570

R358

0

R358

1

R3582R3583

R358

4

R358

5

R359

0

R359

1

R360

1

R3602R360

3

R3605

1

23

R3616

R3617

RT36

04

RT36

10

S3600

S3601

S3602

S3603S3604S3605

S3606

S3607

S3608SH3590

SH3600

1

2 3

4

U3540

C 12

3

4

U3560

C1

2

3

4

U3561

VIEWED FROM SIDE 1

VR3610

HEAVY COMPONENTS SIDE

LIGHT COMPONENTS SIDE

C3502

C350

3

C3507

C3513

C3514

C352

3

C3595

C359

7

C361

0C3

611

C361

2

C361

3

C361

4

C361

5

C361

6

C361

7

C362

4

C3625

C3626

C3628

C3629

C3632

C3634

C3635

C3636

C3637

C3638

C363

9

C3642C3643

C3644

VIEWED FROM SIDE 2

C3645

CR3582

3

12

L3540

L3541

L3613

L3614

L3616

L3617

L361

8

Q3501

Q3502

1

2

3

Q3520

Q3521

R350

1

R350

3

R3504

R3505R3506

R350

7

R350

8

R350

9

R351

0

R3511

R351

2R3513

R351

4

R351

5R3

521

R352

2

R352

3

R3524

R3526

3

3

3

3

3

2 2

2

2

2

1

1

1

1

1

R3527

R354

0

R354

1

R357

1

C3563 C3571C3570C3564 R357

2

R3586

R3606

R3607

R3610

R361

1

R361

5

R3619

R3620

R3621

R3622

R3623

R362

4

R362

5

R3626

R362

7

R3628R3

629

R363

0

R363

1

R365

0

R365

1

SH3591

SH3592

TP3610

TP3611

TP3612

TP3613

TP3614

14

1 7

8U3500

VR3611

MAEPF-25478-A

Range 1 (136 to 162MHz) Power Amplifier (Kits HUD4021A, HUD4021B, HUD4021C) Component Locations and Parts List

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

CAPACITORS:

C3502 2113931F49 10,000 pFC3503 2113931F49 10,000 pFC3505 2113931F49 10,000 pFC3507 2113931F49 10,000 pFC3510 2113930F50 91 pFC3511 2113930F39 33 pFC3512 2113931F49 10,000 pFC3513 2113741N69 100000 pFC3514 2113931F49 10,000 pFC3520 2113930F55 150 pFC3521 2113930F45 56 pFC3522 2111078B43 110 pFC3540 2111078B44 120 pFC3541 2111078B44 120 pFC3542 2111078B38 68 pFC3543 2111078B42 100 pFC3544 2111078B52 240 pFC3550 2111078B33 43 pFC3551 2111078B33 43 pFC3560 2111078B49 180 pFC3561 2111078B49 180 pFC3562 2113741N69 100000 pFC3563 2111078B51 220 pFC3564 2111078B51 220 pFC3565 2111078B42 100 pFC3566 2111078B42 100 pFC3567 2111078B36 56 pFC3568 2111078B33 43 pFC3569 2113741N69 100,000 pFC3570 2111078B51 220 pFC3571 2111078B51 220 pFC3572 2111078B42 100 pFC3573 2111078B42 100 pFC3574 2111078B36 56 pFC3575 2111078B33 43 pF C3576 2113740B65 470 pFC3577 2111078B25 27 pFC3578 2111078B59 470 pFC3579 2111078B38 68 pFC3580 2113931F17 470 pFC3581 2111078B42 100 pFC3582 2111078B42 100 pFC3583 2111078B42 100 pFC3584 2111078B42 100 pFC3586 2113930F30 13 pFC3587 2113930F35 22 pFC3588 2113930F35 22 pFC3589 2113930F35 22 pFC3591 2111078B34 47 pFC3592 2111078B23 24 pFC3593 2111078B34 47 pFC3594 2111078B20 18 pF

C3595 2111078B59 470 pFC3596 2111078B13 10 pFC3597 2113931F17 470 pFC3598 2113930F39 33 pFC3601 2113930F37 27 pFC3602 2113931F17 470 pFC3610 2113931F49 10,000 pFC3611 2113931F49 10,000 pFC3612 2113931F49 10,000 pFC3613 2113931F49 10,000 pFC3614 2113931F49 10,000 pFC3615 2113931F49 10,000 pFC3616 2113931F49 10,000 pFC3617 2113931F49 10,000 pFC3620 2111078B59 470 pFC3623 2113741N69 0.1 uFC3624 2113931F17 470 pFC3629 2113741B21 1000 pFC3634 2113741N69 100,000 pFC3635 2113741N69 100,000 pFC3636 2113741N69 100,000 pFC3639 2113931F49 10,000 pFC3640 2113931F49 10,000 pFC3641 2113931F17 470 pFC3642 2113931F49 10,000 pFC3643 21139331F49 10,000 pFC3650 2380090M32 220 uFC3651 2380090M32 220 uF

DIODES:

CR3581 4802482J02 PinCR3582 4880154K05 Dual, common cathodeCR3584 4880121R01 PinCR3600 4813825A05 Hot CarrierVR3610 4880222R01 ZenerVR3611 4813830A15 Zener

HEATSINKS:

H3520 2605132Y02H3560 2605132Y02H3580 2605132Y02

CONNECTORS:

J3500 2880001R12 12 PinsJ3501 2880001R02 2 PinsJ3502 0905902V04 PowerJ3503 0905901V09 Antenna

INDUCTORS:

L3500 2460591N67 Air wound coil 43.49 nHL3502 2460591M32 Air wound coil 27.42 nHL3520 2460591C23 Air wound coil 13.85 nHL3540 2484657R01 BeadL3541 2460591N67 Air wound coil 43.49 nHL3560 2460591N67 Air wound coil 43.49 nHL3561 2484657R01 BeadL3562 2460591N67 Air wound coil 43.49 nH

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

L3563 2460591N67 Air wound coil 43.49 nHL3564 2460591N67 Air wound coil 43.49 nHL3565 2484657R01 BeadL3567 2460591X05 Air wound coil squareL3566 2460591X05 Air wound coil squareL3580 2480140E01 1.2 nHL3581 2460592B01 51 nHL3582 2460591N53 Air wound coil 41.23 nHL3583 2460591N53 Air wound coil 41.23 nHL3590 2460592B01 51 nHL3591 2460592B01 51 nHL3592 2460592B01 51 nHL3593 2460592A01 Air wound coil 17 nHL3600 2460591C23 Air wound coil 13.85 nHL3612 2484657R01 BeadL3613 2484657R01 BeadL3614 2460591N67 Air wound coil 43.49 nHL3616 2484657R01 Bead

L3617 2460591X02 Air wound coil squareL3618 2484657R01 BeadL3620 2460591X02 Air wound coil square

TRANSISTORS:

Q3500 4880182D50 MRF8372Q3501 4805128M16 PNP, MMBT3906Q3502 4880141L02 NPNQ3520 4813827A36 N-CH FET, MRF5003Q3521 4880141L02 NPN

RESISTORS:

R3501 0662057A25 100R3503 0662057A18 51R3504 0662057A56 2000R3505 0662057A18 51R3506 0662057A18 51R3507 0662057A18 51R3508 0662057A18 51R3509 0662057A37 330R3510 0662057A49 1000R3511 0662057A56 2000R3512 0662057A49 1000R3513 0662057A69 6800R3514 0662057A73 10KR3515 0662057A49 1000R3521 0660081A73 10K R3522 0662057A93 68KR3523 0660081A73 10K R3524 0662057A79 18KR3525 0662057A25 100R3528 0662057A25 100R3540 0611077A26 10R3558 0611077A26 10R3559 0611077A26 10R3560 0611077A26 10R3561 0680194M25 100R3562 0680194M13 33

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

R3563 0680194M13 33R3565 0680194M01 10R3566 0680194M18 51R3567 0680194M01 10R3568 0611077A26 10R3569 0680194M25 100R3570 0611077A26 10R3571 0680194M25 100R3572 0680194M25 100R3580 0660076B25 1 MegR3581 0660076B25 1 MegR3582 0680194M13 33R3583 0680194M13 33R3584 0660076B25 1 MegR3585 0660076B25 1 MegR3586 0662057A49 1000R3590 0660076B25 1 MegR3591 0660076B25 1 MegR3601 0662057A53 1500R3602 0662057A27 120R3603 0662057A41 470 R3605 0662057A81 22KR3606 0662057A62 3600R3607 0662057A66 5100R3610 0611077A26 10R3611 0662057A25 100R3615 0662057A25 100R3616 0680195M01 10R3617 1705876X01 ShuntR3619 0680195M01 10R3620 0611077B15 47KR3621 0611077A01 JumperR3622 0662057A88 43KR3623 0662057A81 22KR3624 0662057A81 22KR3625 0662057A85 33KR3626 0662057A81 22KR3627 0662057A45 680R3628 0662057A81 22KR3629 0662057A81 22KR3630 0662057A81 22KR3631 0662057A81 22KR3651 0611077A01 0RT3604 0680149M02 ThermistorRT3610 0680149M02 Thermistor

SHIELDS:

SH3590 2605836Z01 Harmonic filterSH3591 2602660J02 Transmission lineSH3592 2605259V01 Transmission lineSH3600 2605836Z01 Coupler

INTEGRATED CIRCUITS:

U3500 5183222M49 Operational amplifier

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

POWER AMPLIFIER DEVICES:

(For Kits HUD4021A, HUD4021B,)

U3540 2605224Y05 M25C22U3560 2605750X09 MRF257U3561 2605750X09 MRF257

POWER AMPLIFIER DEVICES: (

For Kit HUD4021C)

U3540 2685698A02 M25C22 With Heat SinkU3560 2685700A04 MRF247 With Heat SinkU3561 2685700A04 MRF247 With Heat Sink

PRINTED CIRCUIT BOARD (For Reference Only)

84D05113Y02 For Kits HUD4021A, HUD4021B,

84D05113Y03 For Kit HUD4021C

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTIONPOWER AMPLIFIER PARTS LIST

NOTES:1. All resistance values are in ohms unless indicated otherwise.

2. Components shown in component location and schematic diagrams but not included in parts list are not placed.

Page 76: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

POWER AMPLIFIER COMPONENT LOCATIONS

C3502

C350

3

C3507

C3513

C3514

C352

3

C3595

C359

7

C361

0C3

611

C361

2

C361

3

C361

4

C361

5

C361

6

C361

7

C362

4

C3625

C3626

C3628

C3629

C3632

C3634

C3635

C3636

C3637

C3638

C363

9

C3642C3643

C3644

VIEWED FROM SIDE 2

C3645

CR3582

3

12

L3540

L3541

L3613

L3614

L3616

L3617

L361

8

Q3501

Q3502

1

2

3

Q3520

Q3521

R350

1

R350

3

R3504

R3505R3506

R350

7

R350

8

R350

9

R351

0

R3511

R351

2R3513

R351

4

R351

5R3

521

R352

2

R352

3

R3524

R3526

3

3

3

3

3

2 2

2

2

2

1

1

1

1

1

R3527

R354

0

R354

1

R357

1

C3563 C3571C3570C3564 R357

2

R3586

R3606

R3607

R3610

R361

1

R361

5

R3619

R3620

R3621

R3622

R3623

R362

4

R362

5

R3626

R362

7

R3628

R362

9R3

630

R363

1

R365

0

R365

1

SH3591

SH3592

TP3610

TP3611

TP3612

TP3613

TP3614

14

1 7

8U3500

VR3611

MAEPF-25478-A

LIGHT COMPONENTS SIDE

HEAVY COMPONENTS SIDEMAEPF-25477-A

C350

5

C351

0

C3511

C351

2

C352

0

C352

1

C3522

C3540C3541C3542

C3543

C3544

C355

0C3

551

C3560C3561

C356

2

C3565

C3566C356

7

C356

8

C356

9

C3572

C3573

C357

4

C357

5

C3576

C3577

C3578

C3579

C3580

C3581

C3582C3583

C3584

C3586

C3587

C358

8

C3589

C3591

C3592

C3593

C3594

C3596

C359

8

C360

1

C360

2

C3620

C362

3

C3630

C3631

C3633

C364

0

C364

1

C3650

C3651

CR3580CR3581

CR3584

CR3600

H3520

H3560

H358

0

12 1J3500J3501

12

J3502

3

1

2

J3503

L350

0

L3502

L352

0

L3560

L3561

L3562

L356

3

L3564

L3565

L3566

L3567L3580

L3581

L358

2 L358

3

L359

0

L3591L359

2

L3593

L3600

L3611 L3612

L3620

8 5

41Q3500

R352

5

R352

8

R3558R3559 R3560

R356

1

R3562

R3563

R3565

R356

6

R3567

R3568

R356

9

R3570

R358

0

R358

1

R3582R3583

R358

4

R358

5

R359

0

R359

1

R360

1

R3602R360

3

R3605

1

23

R3616

R3617

RT36

04

RT36

10

S3600

S3601

S3602

S3603S3604S3605

S3606

S3607

S3608SH3590

SH3600

1

2 3

4

U3540

C 12

3

4

U3560

C1

2

3

4

U3561

VIEWED FROM SIDE 1

VR3610

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

CAPACITORS:C3502 2113931F49 10,000 pFC3503 2113931F49 10,000 pFC3505 2113931F49 10,000 pFC3507 2113931F49 10,000 pFC3510 2113930F50 91 pFC3511 2113930F39 33 pFC3512 2113931F49 10,000 pFC3513 2113741N69 100,000 pFC3514 2113931F49 10,000 pFC3520 2113930F55 150 pFC3521 2113930F43 47 pFC3522 2111078B42 100 pFC3540 2111078B44 120 pFC3541 2111078B42 100 pFC3542 2111078B38 68 pFC3543 2111078B42 100 pFC3544 2111078B51 220 pFC3550 2111078B32 39 pFC3551 2111078B32 39 pFC3560 2111078B47 150 pFC3561 2111078B47 150 pFC3562 2113741N69 100,000 pFC3563 2111078B49 180 pFC3564 2111078B49 180 pFC3565 2111078B42 100 pFC3566 2111078B42 100 pFC3567 2111078B36 56 pFC3568 2111078B33 43 pFC3569 2113741N69 100,000 pFC3570 2111078B49 180 pFC3571 2111078B49 180 pFC3572 2111078B42 100 pFC3573 2111078B42 100 pFC3574 2111078B36 56 pFC3575 2111078B33 43 pF C3576 2113740B65 470 pFC3577 2111078B25 27 pFC3578 2111078B59 470 pFC3579 2111078B38 68 pFC3580 2113931F17 470 pFC3581 2111078B42 100 pFC3582 2111078B42 100 pFC3583 2111078B42 100 pFC3584 2111078B42 100 pFC3586 2113930F30 13 pFC3587 2113930F35 22 pFC3588 2113930F35 22 pFC3589 2113930F35 22 pFC3591 2111078B34 47 pFC3592 2111078B23 24 pFC3593 2111078B34 47 pFC3594 2111078B20 18 pFC3595 2111078B59 470 pFC3596 2111078B13 10 pFC3597 2113931F17 470 pFC3598 2113930F39 33 pFC3601 2113930F37 27 pF

110W POWER AMPLIFIER PARTS LIST

C3602 2113931F17 470 pFC3610 2113931F49 10,000 pFC3611 2113931F49 10,000 pFC3612 2113931F49 10,000 pFC3613 2113931F49 10,000 pFC3614 2113931F49 10,000 pFC3615 2113931F49 10,000 pFC3616 2113931F49 10,000 pFC3617 2113931F49 10,000 pFC3620 2111078B59 470 pFC3623 2113741N69 100,000 pFC3624 2113931F17 470 pFC3629 2113741B21 1000 pFC3634 2113741N69 100,000 pfC3635 2113741N69 100,000 pFC3636 2113741N69 100,000 pFC3639 2113931F49 10,000 pFC3640 2113931F49 10,000 pFC3641 2113931F17 470 pFC3642 2113931F49 10,000 pFC3643 2113931F49 10,000 pFC3650 2380090M32 220 uFC3651 2380090M32 220 uF

DIODES:

CR3581 4802482J02 PinCR3582 4880154K05 Dual, common cathodeCR3584 4880121R01 PinCR3600 4813825A05 Hot CarrierVR3610 4880222R01 ZenerVR3611 4813830A15 Zener

HEATSINKS:H3520 2605132Y02H3560 2605132Y02H3580 2605132Y02

CONNECTORS:J3500 2880001R12 12 PinsJ3501 2880001R02 2 PinsJ3502 0905902V04 PowerJ3503 0905901V09 Antenna

INDUCTORS:L3500 2460591N67 Air wound coil 43.49 nHL3502 2460591M32 Air wound coil 27.42 nHL3520 2460591C23 Air wound coil 13.85 nHL3540 2484657R01 BeadL3541 2460591N67 Air wound coil 43.49 nHL3560 2460591N67 Air wound coil 43.49 nHL3561 2484657R01 BeadL3562 2460591N67 Air wound coil 43.49 nHL3563 2460591N67 Air wound coil 43.49 nHL3564 2460591N67 Air wound coil 43.49 nHL3565 2484657R01 BeadL3567 2460591X05 Air wound coil squareL3566 2460591X05 Air wound coil squareL3580 2480140E01 1.2 nHL3581 2460592B01 51 nHL3582 2460591N53 Air wound coil 41.23 nHL3583 2460591N53 Air wound coil 41.23 nH

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

L3590 2460592B01 51 nHL3591 2460592B01 51 nHL3592 2460592B01 51 nHL3593 2460592A01 Air wound coil 17 nHL3600 2460591C23 Air wound coil 13.85 nHL3611 2460591X02 Air wound coil squareL3612 2484657R01 BeadL3613 2484657R01 BeadL3614 2460591N67 Air wound coil 43.49 nHL3616 2484657R01 BeadL3617 2460591X02 Air wound coil squareL3618 2484657R01 Bead

TRANSISTORS:Q3500 4880182D50 MRF8372Q3501 4805128M16 PNP, MMBT3906Q3502 4880141L02 NPNQ3520 4813827A36 N-CH FET, MRF5003Q3521 4880141L02 NPN

RESISTORS:R3501 0662057A25 100R3503 0662057A18 51R3504 0662057A56 2000R3505 0662057A18 51R3506 0662057A18 51R3507 0662057A18 51R3508 0662057A18 51R3509 0662057A37 330R3510 0662057A49 1000R3511 0662057A56 2000R3512 0662057A49 1000R3513 0662057A69 6800R3514 0662057A73 10KR3515 0662057A49 1000R3521 0660081A73 10K R3522 0662057A93 68KR3523 0660081A73 10K R3524 0662057A79 18KR3525 0662057A20 62R3528 0662057A20 62R3540 0611077A26 10R3558 0611077A26 10R3559 0611077A26 10R3560 0611077A26 10R3561 0680194M25 100R3562 0680194M13 33R3563 0680194M13 33R3565 0680194M01 10R3566 0680194M18 51R3567 0680194M01 10R3568 0611077A26 10R3569 0680194M25 100R3570 0611077A26 10R3571 0680194M25 100R3572 0680194M25 100R3580 0660076B25 1 MegR3581 0660076B25 1 MegR3582 0680194M13 33R3583 0680194M13 33

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

68 Range 2 (146 to 174MHz) Power AmplifierHUD4016B, HUD4016C) Component Locat

R3584 0660076B25 1 MegR3585 0660076B25 1 MegR3586 0662057A49 1000R3590 0660076B25 1 MegR3591 0660076B25 1 MegR3601 0662057A53 1500R3602 0662057A27 120R3603 0662057A41 470 R3605 0662057A81 22KR3606 0662057A62 3600R3607 0662057A66 5100R3610 0611077A26 10R3611 0662057A25 100R3615 0662057A25 100R3616 0680195M01 10R3617 1705876X01 ShuntR3619 0680195M01 10R3620 0611077B15 47KR3621 0611077A01 JumperR3622 0662057A88 43KR3623 0662057A81 22KR3624 0662057A81 22KR3625 0662057A85 33KR3626 0662057A81 22KR3627 0662057A45 680R3628 0662057A81 22KR3629 0662057A81 22KR3630 0662057A81 22KR3631 0662057A81 22KR3650 0611077A01 0RT3604 0680149M02 ThermistorRT3610 0680149M02 Thermistor

SHIELDS:SH3590 2605836Z01 Harmonic filterSH3591 2602660J02 Transmission lineSH3592 2605259V01 Transmission lineSH3600 2605836Z01 Coupler

INTEGRATED CIRCUITS

U3500 5183222M49 Operational amplifier

POWER AMPLIFIER (PA) BOARD: (For Kits HUD4016A , HUD4021B)

U3540 2605224Y05 M25C22 With HeatsinkU3560 2605750X09 MRF257 With HeatsinkU3561 2605750X09 MRF257 With Heatsink

POWER AMPLIFIER DEVICES: (For Kit HUD4016C)

U3540 2685698A02 M25C22 With Heat SinkU3560 2685700A04 MRF247 With Heat SinkU3561 2685700A04 MRF247 With Heat Sink

PRINTED CIRCUIT BOARD (For Reference Only)

84D05113Y02 For Kits HUD4016A,, HUD4021B,

84D05113Y03 For Kit HUD4016C

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

NOTES:1. All resistance values are in ohms unless indicated otherwise.

Revision B, 03/99 (Kits HUD4016A, ions and Parts List

2. Components shown in component location and schematic diagrams but not included in parts list are not placed.

Page 77: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99 69

Power Amplifer (Kits HUD4016A, HUD4016B, HUD4016C, HUD4021A, HUD4021B, HUD4021C) Schematic Diagram

0.1uF0.1uF

J3503

0.1uF0.1uF0.1uF0.1uF

0.1uF0.1uF

T-LINE SHIELD

OVER VOLTAGE PROTECTION CIRCUIT

PA_CNTRL_LIM

N/P

N/P

N/P

PA_CNTRL

PA_TEMP

CURRENT_SENSE-

N/P

N/P

N/P

N/P N/P

A+ TEST POINT

K9.1

V_FORWARD

TX_INJ

A+ TEST POINT

A+ CONNECTOR

COUPLER SHIELD

H-FILTER SHIELD

T-LINE SHIELD

ANTENNA CONNECTOR

GND

A+

N/P

N/P

N/P

N/P

N/P

CURRENT_SENSE+

ANA_GND

FORWARD POWER DETECTOR

GND

J3502

N/PN/PN/PN/P

J3500

J3501

0.1uF

0.1uF

0.1uF

27.42nH

L3502

N/P

51nH

L3591

GND TEST POINTS

C3639.01uF

180pFC3571

R3616

220uFC3630

220uF

.01uF

C3502

2

C3631

1

51

10uFC3633

2

L3612

A+

13.85nHL3600

C3615

R350551

L3592

51nH

TP3612

2R3620

2

1

4

3

TP3610

L35801.165uH

51nH

TP3613 TP3614

470pFC3597

U3560

C3634

470pFC3576

100R3611

C3635

CR3584

22K

C3636

100pFC3583

C3637

1.0M

C3638

R3626

C3651220uF

C3569

VR36115.6V

C3650220uF 0.1uF

22KR3623

1

17nHL3593

2KR3511

.01uF

C3625

150pFC3561

CR3581

R3584

27pFC3601

1.0MR3585

C359224pF

CR3582

L3590

R3524

R3525

R35901.0M

U3500-3

13

12

R3605

R35911.0M

11

43.49nHL3563

CR3580 470pFC3595

22K

1K

51

43pFC3568

7

180pFC3563

48nH

C3565100pF

L3566

10R3558

33KR3625

1

100pFC3584

RX INTERFACECONNECTOR

TX INTERFACECONNECTOR

GND

RX_IN

R3583

33

33

4

3

1.0M

56pFC3567

23

1

Q350067

5

6

TP3611

47pFC3593

C355139pF

8

9

10

10

11

L3565

R3565R3562

33

100

27pFC3577

12

C3623

R3631

1

R3509330

SH3591

SH3590

.01uFC3611

.01uFC3610

47KR35811.0M

2

100pFC3581

.01uF

R3622

U3500-2

51nH

43K

R3624

100pF

C3541

R3607

5.1K

22K

R3512

100pFC3573

.01uFC3614

.01uFC3616

28V

.01uFC3617

R356810

SH3600

470pFC3620

H3560

1K

R36011.5K

SH3592

22K

.01uF

C3640

C3641470pF

.01uF

C3642

0.1uFC3645

R3627

C36440.1uF

R3629

680

R3628

22K Q3521

C3643.01uF

R3630

22K

22K

C358822pF

10R3559

H3520

L362025nH

C3562

L3582

41.23nH

R3572

100

R3501

R3571

100

20K

100

R3527

100KRT3610

C355039pF

2

31

4

11

9

108

4

11

U3500-16

57

4

11U3500-4

.01uFC3507

L3581

R35101K

C3505

100KRT3604

100pFC3582

A+

.01uF

51

L3613

R3508

10pFC3596

48nH

L3567

100pFC3522

1KR3515

43.49nH 18K

C3628

R3619

L350033pFC3511

10

R3504

R352310K

4582K

51

R352110K

Q3501

R3507

R3503 91pFC3510

R3602120

R361010

R352268K

0

43.49nHL3560

25nHL3611

R3621

62

47pFC3591

18pFC3594

144

R351410K

62

R3528

C358722pF

R3606

470pFC3580

H3580

100pFC3572

13pF

C3586

R3586

1K

43.49nHL3562

10R3541

L3561

43.49nHL3564

470pF

C3578

R3561

150pFC3560

5.6KR3513

33pFC3598

R357010

R3569

100pFC3566

R3603470

43pFC3575

100

180pFC3564

R356010

180pFC3570

R3582

49.4u

R3617

.01uFC3612

10

VR3610

L3616

R3615100

L3583

41.23nH

470pFC3624

331000pFC3629

R3563

C3626

25nHL3617

CR3600

C3513

C3632

L3618

.01uFC3512

L3540

R3580

.01uFC3503 .01uF

C3514

3

56pFC3574

R3506

Q3502

R354010 470pF

C3602

.01uFC3613

150pFC3520

68pFC3579

100pFC3543

Q3520

3

D

1

2S

U3540

2

4

1

3

R352651

43.49nH

47pFC3521

R3567

120pF

C3540

13.85nHL3520

L3541

10R3566

C358922pF

.01uFC3523

68pF

C3542

220pFC3544

51

3

2

1

4

43.49nHL3614

U3561

R3651

0

R3650

0

63A81084C46-A

PCB 84D05113Y02, 84D05113Y03 (FOR REFERENCE ONLY)

Page 78: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

70

REFERENCE SYMBOL

MOTOROLA PART NO.

DESCRIPTION

CAPACITORS:

C9600 2113931F49 10,000 pFC9601 2113931F49 10,000 pFC9606 2113931F49 10,000 pFC9607 2113931F49 10,000 pFC9608 2113931F49 10,000 pFC9609 2113931F49 10,000 pFC9610 2113931F49 10,000 pF

CONNECTORS:

J9500 0980008R02 2 PinsJ9601 0980008R12 12 Pins

C9600 C9601

1 12J9601

MAEPF-25475-A

C9606

C9607

C9608

C9609

C9610

MAEPF-25476-A

2-PIN PA INTERCONNECTCOMPONENT LOCATIONS

HEAVY COMPONENTS SIDE

LIGHT COMPONENTS SIDE

2-PIN and 12-PIN PA Interconnects (Kits HUD4016A, HUD4016B, HUD4016C, HUD4021A, HUD4021B, HUD4021C) Component Locations and Parts List

J9500

1 2

MAEPF-25474-A

12-PIN PA INTERCONNECTCOMPONENT LOCATIONS

2-PIN AND 12-PIN PA INTERCONNECTS PARTS LIST Kit No. HUD4015A for Non-Preamplifier ModelsKit No. HUD4019A for Preamplifier Models

NOTE:Open parentheses ( ) at end of kit number stand for revision letterof kit number (i.e., A, B, etc.), which changes from time to time.

Page 79: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

71

1

2IF9513

RX_IN

J9500

63A81084C43-A

2-PIN and 12-PIN PA Interconnects (Kits HUD4016A, HUD4016B, HUD4016C, HUD4021A, HUD4021B, HUD4021C) Schematic Diagrams

1 I1

V_DRIVE_9

PA_CNTRL_9

CURRENT_SENSE-_9

K9.1V_9

VFORWARD_9

PA_TEMP

CURRENT_SENSE+_9

GNDD_9

TX_INJ

GND_9_2_10

IF9612

A+_9_2

A+_9_3

SC9600

IF9602

2I2

IF9609

IF9610

3

IF9607

9

7

11

J9601

1

10

12

6

5

.01uFC9601

.01uF

8

C9600.01uF

C9607.01uF

C9609

IF9603

IF9611

C9610.01uF.01uF

C9608C9606.01uF

4

IF9608

IF9601

IF9604

IF9605

IF9606

IF9600

2

63A81084C44-A

2-PIN PA INTERCONNECT

12-PIN PA INTERCONNECT

Page 80: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

72 Revision B, 03/99

NOTES

Page 81: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9973

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

RECEIVER FRONT END

9.3V Receiver Front End 68P81080C41-B9.3V-19.3V-39.3V-4

Receiver IF 68P81080C41-B

RF_REG_5V Receiver Front End 68P81080C41-B RF_REG_5V_4 Receiver IF 68P81080C41-B

RF_REG_5V_5_UHF Receiver IF 68P81080C41-B

RF_REG_5V_5 Receiver IF 68P81080C41-B

RF_REG_5V_3 Receiver IF 68P81080C41-B

TUNING_VOLTAGE Receiver Front End 68P81080C41-B RX_CNTRL1 Receiver IF 68P81080C41-B

RX_IN Receiver Front End 68P81080C41-B RX_IN Power Amplifier 68P81080C41-B

LO_INJ Receiver Front End 68P81080C41-B LO_INJ_HS Synthesizer 68P81080C41-B

IF_IN Receiver Front End 68P81080C41-B IF_IN Receiver IF 68P81080C41-B

5V_AGC Receiver Front End 68P81080C41-B RF_REG_5V_6 Receiver Back End

AGC_3 Receiver Front End AGC_3 Receiver Back End

RECEIVER INTERMEDIATE FREQUENCY (IF)

RF_REG_5V_4 Receiver IF 68P81080C41-B RF_REG_5V_5 Receiver IF 68P81080C41-B

RF_REG_5V_3 Receiver IF 68P81080C41-B

RF_REG_5V_5_UHF Receiver IF 68P81080C41-B

RF_REG_5V Receiver Front End 68P81080C41-B

RF_REG_5V_4 Synthesizer 68P81080C41-B

Page 82: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

74Revision B, 03/99

RF_REG_5V_6 Receiver Back End 68P81080C41-B

9.3V_1 Receiver IF 68P81080C41-B 9.3V_4 Receiver IF 68P81080C41-B

9.3V_3 Receiver IF 68P81080C41-B

9.3V_7_2_26 LPAUD 68P81080C41-B

9.3V_7_2_30 LPAUD 68P81080C41-B

9.3V_4 Synthesizer 68P81080C41-B

RSSI_1 Receiver IF 68P81080C41-B RSSI_3 Receiver IF 68P81080C41-B

RSSI_1 Receiver IF 68P81080C41-B RSSI_3 Receiver Back End 68P81080C41-B

RX_CNTRL1 Receiver IF 68P81080C41-B RX_CNTRL1 Controller C20-B

RX_CNTRL1 Receiver IF 68P81080C41-B TUNING_VOLTAGE Receiver Front End C41-B

2.1MHZ_4 68P81080C41-B 2.1MHZ_3 Receiver IF 68P81080C41-B

2.1MHZ_1 Receiver IF 68P81080C41-B

2.1MHZ_3 Receiver Back End 68P81080C41-B

LOCK_DET_1 Receiver IF 68P81080C41-B LOCK_DET_4 Receiver IF 68P81080C41-B

RF_REG_12V_5 Receiver IF 68P81080C41-B

ZIF SELECT Receiver IF 68P81080C41-B ZIF_SEL_3 Receiver IF 68P81080C41-B

ZIF_SEL_3 Receiver Back End 68P81080C41-B

CLK_1 Receiver IF 68P81080C41-B CLK_3 Receiver IF 68P81080C41-B

CLK_4 Receiver IF 68P81080C41-B

CLK_3 Receiver Back End 68P81080C41-B

CLK_4 Synthesizer 68P81080C41-B

IF_OUT Receiver Back End 68P81080C41-B IF_OUT Receiver Back End 68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 83: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9975

SPI_TX_DATA_1 Receiver IF 68P81080C41-B SPI_TX_DATA_3 Receiver IF 68P81080C41-B

SPI_TX_DATA_4 Receiver IF 68P81080C41-B

SPI_TX_DATA_4 Synthesizer 68P81080C41-B

SPI_TX_DATA_3 Receiver Back End 68P81080C41-B

SYN_SEL_1 Receiver IF 68P81080C41-B SYN_SEL_4 Receiver IF 68P81080C41-B

SYN_SEL_4 Synthesizer 68P81080C41-B

AUDIO_MOD_1 Receiver IF 68P81080C41-B AUD_MODE_4 Receiver IF 68P81080C41-B

AUD_MODE_4 Synthesizer 68P81080C41-B

SQUELCH_3 Receiver IF 68P81080C41-B SQUELCH_1 Receiver IF 68P81080C41-B

SQUELCH_3 Receiver Back End 68P81080C41-B

ROSC_SEL_1 Receiver IF 68P81080C41-B ROSC_SEL_4 Receiver IF 68P81080C41-B

ROSC_SEL_4 Synthesizer 68P81080C41-B

DISC_1 Receiver IF 68P81080C41-B DISC_3 Receiver IF 68P81080C41-B

DISC_3 Receiver Back End 68P81080C41-B

IF_IN Receiver IF 68P81080C41-B IF_IN Receiver Front End 68P81080C41-B

SW_B+or_RX_CNTRL_1 Receiver IF 68P81080C41-B RX_CNTRL1 Receiver Front End 68P81080C41-B

RECEIVER BACK END/ZERO INTERMEDIATE FREQUENCY (ZIF)

RF_REG_5V_3 Receiver Back End 68P81080C41-B RF_REG_5V_4 Receiver IF 68P81080C41-B

RF_REG_5V_5 Receiver IF 68P81080C41-B

RF_REG_5V_3 Receiver IF 68P81080C41-B

RF_REG_5V_5_VHF Receiver IF 68P81080C41-B

RF_REG_5V_3 Receiver Back End 68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 84: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

76Revision B, 03/99

RF_REG_5V_6 Receiver Back End 68P81080C41-B 5V_AGC Receiver Front End 68P81080C41-B

IF_OUT Receiver Back End 68P81080C41-B IF_OUT Receiver IF 68P81080C41-B

2.1MHZ_3 Receiver Back End 68P81080C41-B 2.1MHZ_4 Receiver IF 68P81080C41-B

2.1MHZ_3 Receiver IF 68P81080C41-B

2.1MHZ_1 Receiver IF 68P81080C41-B

2.1MHZ_4 Synthesizer 68P81080C41-B

ZIF_SEL_3 Receiver Back End 68P81080C41-B ZIF_SEL_1 Receiver IF 68P81080C41-B

CLK_3 Receiver Back End 68P81080C41-B CLK_1 Receiver IF 68P81080C41-B

CLK_3 Receiver IF 68P81080C41-B

CLK_4 Receiver IF 68P81080C41-B

CLK_4 Synthesizer 68P81080C41-B

SPI_TX_DATA_3 Receiver Back End 68P81080C41-B SPI_TX_DATA_1 Receiver IF 68P81080C41-B

SPI_TX_DATA_3 Receiver IF 68P81080C41-B

SPI_TX_DATA_4 Receiver IF 68P81080C41-B

SPI_TX_DATA_4 Synthesizer 68P81080C41-B

AGC_3 Receiver Back End 68P81080C41-B AGC3 Receiver Front End 68P81080C41-B

SQUELCH_3 Receiver Back End 68P81080C41-B SQUELCH_3 Receiver IF 68P81080C41-B

SQUELCH_1 Receiver IF 68P81080C41-B

DISC_3 Receiver Back End 68P81080C41-B DISC_1 Receiver IF 68P81080C41-B

DISC_3 Receiver IF 68P81080C41-B

RSSI_3 Receiver Back End 68P81080C41-B RSSI_3 Receiver IF 68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 85: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9977

RSSI_1 Receiver IF 68P81080C41-B

SYNTHESIZER

ROSC_SEL_4 Synthesizer 68P81080C41-B ROSC_SEL_4 Receiver IF 68P81080C41-B

SPI_TX_DATA_4 Synthesizer 68P81080C41-B SPI_TX_DATA_3 Receiver Back End 68P81080C41-B

9.3V_4 Synthesizer 68P81080C41-B 9.3V_1 Receiver IF 68P81080C41-B

CLK_4 Synthesizer 68P81080C41-B CLK_3 Receiver Back End 68P81080C41-B

AUDIO_MOD_4 Synthesizer 68P81080C41-B AUDIO_MOD_4 Receiver IF 68P81080C41-B

SYN_SEL_4 Synthesizer 68P81080C41-B SYN_SEL_4 Receiver IF 68P81080C41-B

RF_REG_5V_4 Synthesizer 68P81080C41-B RF_REG_5V_4 Receiver IF 68P81080C41-B

RF_REG_5V_3 Receiver IF 68P81080C41-B

2.1MHZ_4 Synthesizer 68P81080C41-B 2.1MHZ_3 Receiver Back End 68P81080C41-B

K9.1_9 Synthesizer 68P81080C41-B K9.1_9 (J9601-11) J9601 PA Intercon-nect

68P81080C41-B

TX_INJ Synthesizer 68P81080C41-B TX_INJ (J9601-5) 12-PIN PA Intercon-nect

68P81080C41-B

PA_TEMP_2 Synthesizer 68P81080C41-B PA_TEMP_9 Synthesizer 68P81080C41-B

PA_TEMP (J9601-9) 12-PIN PA Intercon-nect

68P81080C41-B

PA_ CNTRL_2 Synthesizer 68P81080C41-B PA_ CNTRL_9 Synthesizer 68P81080C41-B

PA_ CNTRL_9 (J9601-8) 12-PIN PA Intercon-nect

68P81080C41-B

CURRENT_SENSE-_2 Synthesizer 68P81080C41-B CURRENT_SENSE-_9 Synthesizer 68P81080C41-B

CURRENT_SENSE-_9 (J9601-10)

12-PIN PA Intercon-nect

68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 86: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

78Revision B, 03/99

CURRENT_SENSE+_2 Synthesizer 68P81080C41-B CURRENT_SENSE+_9 Synthesizer 68P81080C41-B

CURRENT_SENSE+_9(J9601-2)

12-PIN PA Intercon-nect

68P81080C41-B

A+_2_3 Synthesizer 68P81080C41-B A+_9_3 Synthesizer 68P81080C41-B

A+_9_3 (J9601-1) 12-PIN PA Intercon-nect

68P81080C41-B

A+_2_2 A+_9_2 Synthesizer 68P81080C41-B

A+_9_3 68P81080C41-B

VFORWARD_2 Synthesizer 68P81080C41-B VFORWARD_9 Synthesizer 68P81080C41-B

VFORWARD_9 (J9601-12) 12-PIN PA Intercon-nect

68P81080C41-B

VDRIVE_2 Synthesizer 68P81080C41-B VDRIVE_9 Synthesizer 68P81080C41-B

VDRIVE_9 (J9601-7) 2-PIN PA Intercon-nect

68P81080C41-B

GNDD_2 Synthesizer 68P81080C41-B GNDD_9 Synthesizer 68P81080C41-B

GNDD_9 (J9601-3) 12-Pin PA Intercon-nect

68P81080C41-B

GND_9_2_10 (J9601-6) 12-Pin PA Intercon-nect

68P81080C41-B

LO_INJ_HS Synthesizer 68P81080C41-B LO_INJ_HS Receiver Front End 68P81080C41-B

LOCK_DET_4 Synthesizer 68P81080C41-B LOCK_DET_4 Receiver IF 68P81080C41-B

POWER AMPLIFIER (PA)

K9.1V_9 Synthesizer 68P81080C41-B K9.1V_9 (J3500-4) Power Amplifier 68P81080C41-B

TX_INJ (J9601-5) Synthesizer 68P81080C41-B TX_INJ (J3500-5) 12-PIN PA Intercon-nect

68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 87: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9979

PA_TEMP_2 Synthesizer 68P81080C41-B PA_TEMP_9 (J9601-9) Synthesizer 68P81080C41-B

PA_TEMP (J3500-9) 12-PIN PA Intercon-nect

68P81080C41-B

PA_ CNTRL_2 Synthesizer 68P81080C41-B PA_ CNTRL_9 (J9601-8) Synthesizer 68P81080C41-B

PA_ CNTRL_9 (J3500-8) 12-PIN PA Intercon-nect

68P81080C41-B

CURRENT_SENSE-_2 Synthesizer 68P81080C41-B CURRENT_SENSE-_9(J9601-10)

Synthesizer 68P81080C41-B

CURRENT_SENSE-_9 (J3500-10)

12-PIN PA Intercon-nect

68P81080C41-B

CURRENT_SENSE+_2 Synthesizer 68P81080C41-B CURRENT_SENSE+_9(J9601-2)

Synthesizer 68P81080C41-B

CURRENT_SENSE+_9(J3500-2)

12-PIN PA Intercon-nect

68P81080C41-B

A+_2_3 Synthesizer 68P81080C41-B A+-9_3 (J9601-1) Synthesizer 68P81080C41-B

A+_9_3 (J3500-1) 12-PIN PA Intercon-nect

68P81080C41-B

A+_2_2 A+_9_2 (J9601-1) Synthesizer 68P81080C41-B

A+_9_3 (J9601-1) 68P81080C41-B

VFORWARD_2 Synthesizer 68P81080C41-B VFORWARD_9 (J9601-12) Synthesizer 68P81080C41-B

VFORWARD_9 (J3500-12) 12-PIN PA Intercon-nect

68P81080C41-B

VDRIVE_2 Synthesizer 68P81080C41-B VDRIVE_9 (J9601-7) Synthesizer 68P81080C41-B

PA_CNTRL_LIM (J3500-7) 12-PIN PA Intercon-nect

68P81080C41-B

GNDD_2 Synthesizer 68P81080C41-B GNDD_9 (J9601-3) Synthesizer 68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 88: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

80Revision B, 03/99

GND_9_2_10 (J3500-6) Power Amplifier

GND_9_2_10 (J9601-6) Synthesizer

A+ (J3500-1) Power Amplifier 68P81080C41-B A+_9_3 (J9601-1) Synthesizer 68P81080C41-B

A+_2_3 Synthesizer 68P81080C41-B

A+_9_2 (J9601-1) Synthesizer 68P81080C41-B

A+_2_2 Synthesizer 68P81080C41-B

CURRENT SENSE+(J3500-2)

Power Amplifier 68P81080C41-B CURRENT SENSE+_9(J9601-2)

Synthesizer 68P81080C41-B

CURRENT SENSE+_2 Synthesizer 68P81080C41-B

CURRENT SENSE+_2 Controller: Regula-tor and Audio Power Amplifier

68P81083C20-B

GNDD_9 ANA_GND (J3500-3)

Power Amplifier 68P81080C41-B GNDD_9 (J9601-3) Synthesizer 68P81080C41-B

GND (J3500-6) Power Amplifier 68P81080C41-B GNDD_9_2_10 (J9601-6) Synthesizer 68P81080C41-B

TX_INJ (J3500-5) Power Amplifier 68P81080C41-B TX_INJ (J9601-5) Synthesizer 68P81080C41-B

PA_CNTRL_LIM (J3500-7) Power Amplifier 68P81080C41-B VDRIVE_9 (J9601-7) Synthesizer

PA_CNTRL_LIM Synthesizer

PA_CNTRL (J3500-8) Power Amplifier 68P81080C41-B PA_CNTRL_9 (J9601-8) Synthesizer 68P81080C41-B

PA_TEMP (J3500-9) Power Amplifier 68P81080C41-B PA_TEMP_9 (J9601-9) Synthesizer 68P81080C41-B

CURRENT SENSE (J3500-10)

Power Amplifier 68P81080C41-B CURRENT SENSE-_9(J9601-10)

Synthesizer 68P81080C41-B

K9.1V (J3500-11) Power Amplifier 68P81080C41-B K9.1V_2 Synthesizer 68P81080C41-B

K9.1V_9 (J9601-11) Synthesizer 68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 89: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9981

K9.1V_9 Controller: Regula-tor and Audio Power Amplifier

68P81083C20-B

V_FORWARD (J3500-12) Power Amplifier 68P81080C41-B VFORWARD_9 (J9601-12) Synthesizer 68P81080C41-B

VFORWARD_2 Controller: Regula-tor and Audio Power Amplifier

68P81083C20-B

RX_IN (J3501-1) Power Amplifier 68P81080C41-B RX_IN Receiver Front End 68P81080C41-B

CONTROLLER

VDRIVE Controller, Power Control/MainController

68P81083C20-B VDRIVE Power Amplifier 68P81080C41-B

PWR_RANGE Controller, Power Control/MainController

68P81083C20-B PWR_RANGE Controller/Main Con-troller

8P81083C20-B

V_FORWARD Controller, Power Control/MainController

68P81083C20-B VFORWARD Power Amplifier 68P81080C41-B

VFWD_BUF Controller, Power Control/MainController

68P81083C20-B VFWD_BUF Audio PA & Voltage Regulators

68P81083C20-B

VSUM Controller, Power Control/Main Controller

68P81083C20-B VSUM Audio PA & Voltage Regulators

68P81083C20-B

CLK Controller, Power Control/MainController

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 90: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

82Revision B, 03/99

DA_SEL Controller, Power Control/MainController

68P81083C20-B DA_SEL Controller/Main Con-troller

68P81083C20-B

SPI_TX_DATA Controller, Power Control/MainController

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

TEMP_GND Controller, Power Control/MainController

68P81083C20-B

CURRENT_SENSE+ Controller, Power Control/Main Controller

68P81083C20-B CURRENT_SENSE+

Power Amplifier 68P81080C41-B

CURRENT_SENSE- Controller, Power Control/MainController

68P81083C20-B CURRENT_SENSE-

Power Amplifier 68P81080C41-B

PA_TEMP Controller, Power Control/MainController

68P81083C20-B PA_TEMP Power Amplifier 68P81080C41-B

PA_DIS Controller, Power Control/MainController

68P81083C20-B PA_DIS Controller/Main Con-troller

68P81083C20-B

K9.1_ENB Controller, Power Control/MainController

68P81083C20-B K9.1_ENB Controller/Main Con-troller

68P81083C20-B

9.3V Controller, Power Control/MainController

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 91: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9983

SW_B+ Controller, Power Control/MainController

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

+5V Controller, Power Control/MainController

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

PA_CNTL_LIM Controller, Power Control/MainController

68P81083C20-B

PA_CNTL Controller, Power Control/MainController

68P81083C20-B PA_CNTL Power Amplifier 68P81080C41-B

TEMP Controller, Power Control/MainController

68P81083C20-B TEMP Controller/Main Con-troller

68P81083C20-B

RX_CNTL1 Controller, Power Control/MainController

68P81083C20-B RX_CNTL1 Receiver IF 68P81080C41-B

RX_CNTL1 Receiver IF 68P81080C41-B

K9.1V Controller, Power Control/MainController

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

A+_CONT Audio PA & Voltage Regulators/Controller Interface

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 92: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

84Revision B, 03/99

UNSW_5V Audio PA & Voltage Regulators

68P81083C20-B UNSW_+5V Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

CL_UNSW_5V Audio PA & Voltage Regulators

68P81083C20-B

+5V Audio PA & Voltage Regulators

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

SW_B+ Audio PA & Voltage Regulators

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

AUPA_EN Audio PA & Voltage Regulators

68P81083C20-B AUPA_EN Controller/Main Con-troller

68P81083C20-B

RX_AUDIO Audio PA & Voltage Regulators

68P81083C20-B RX_AUDIO Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

SPKR+ Audio PA & Voltage Regulators/Controller Interface

68P81083C20-B SPKR+ Controller Interface 68P81083C20-B

SPKR- Audio PA & Voltage Regulators/Controller Interface

68P81083C20-B SPKR- Controller Interface 68P81083C20-B

Controller Interface 68P81083C20-B

A+ Audio PA &Voltage Regulators

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 93: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9985

B+_ON_OFF Audio PA &Voltage Regulators/Controller Interface

68P81083C20-B B+_ON_OFF Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

IGNITION_CLEAR

Audio PA &Voltage Regulators

68P81083C20-B IGNITION_CLEAR

Controller/Main Con-troller

68P81083C20-B

B+_IGNITION Audio PA &Voltage Regulators/Controller Interface

68P81083C20-B B+_IGNITION Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

9.3 Audio PA &Voltage Regulators

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Vdd Audio PA &Voltage Regulators

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Vaud Audio PA &Voltage Regulators

68P81083C20-B Vaud Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

PWR_RST Audio PA &Voltage Regulators

68P81083C20-B PWR_RST Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

PWR_RST Controller/Main Con-troller

68P81083C20-B

VFWD_BUF Audio PA &Voltage Regulators

68P81083C20-B VFWD_BUF Controller, Power Control/MainController

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 94: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

86Revision B, 03/99

VSUM Audio PA &Voltage Regulators

68P81083C20-B VSUM Controller, Power Control/MainController

68P81083C20-B

EXP_FILTERED_AUDIO Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B EXP_FILTERED_AUDIO Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B

AUX_RX_IN1 Controller, ASFIC/Audio BlockDiagram/Main Con-troller/Controller Interface

68P81083C20-B AUX_RX_IN1 Controller Interface 68P81083C20-B

AUX_RX_IN2 Controller, ASFIC/Audio BlockDiagram/Main Con-troller/Controller Interface

68P81083C20-B AUX_RX_IN2 Controller Interface 68P81083C20-B

AUX_RX_IN3 Controller, ASFIC/Audio BlockDiagram/Main Con-troller/Controller Interface

68P81083C20-B AUX_RX_IN3 Controller Interface 68P81083C20-B

AUX_TX_IN1 Controller, ASFIC/Audio BlockDiagram/Main Con-troller/Controller Interface

68P81083C20-B AUX_TX_IN1 Controller Interface 68P81083C20-B

AUX_TX_IN2 Controller, ASFIC/Audio BlockDiagram/Main Con-troller/Controller Interface

68P81083C20-B AUX_TX_IN2 Controller Interface 68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 95: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9987

AUX_TX_IN3 Controller, ASFIC/Audio BlockDiagram/Main Con-troller/Controller Interface

68P81083C20-B AUX_TX_IN3 Controller Interface 68P81083C20-B

9.3V Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

VAG Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B VAG Controller, IO RSSI BuffersController Interface/Main Controller

68P81083C20-B

Vaud Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B Vaud Audio PA & Voltage Regulators

68P81083C20-B

CLK Controller, ASFIC/AUdio BlockDiagram/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

PL_TX Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B PL_TX Controller/Main Con-troller

68P81083C20-B

2.1MHZ Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

TX_DATA Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B TX_DATA Controller/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 96: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

88Revision B, 03/99

LG_DTMF Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B LG_DTMF Controller/Main Con-troller

68P81083C20-B

ASFIC_SEL Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B ASFIC_SEL Controller/Main Con-troller

68P81083C20-B

SPI_TX_DATA Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

EXP_AUDIO Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B EXP_AUDIO Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B

RX_IN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B RX_IN Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B

TRL_HD2:KEY_FAIL Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B TRL_HD2:KEY_FAIL Controller Interface 68P81083C20-B

SQUELCH_IN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B SQUELCH Receiver IF 68P81080C41-B

SQUELCH Receiver IF 68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 97: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9989

MIC_VOLTAGE Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B MIC_VOLTAGE Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

MIC_IN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B MIC_IN Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

DISC Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B DISC Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B

DISC Receiver IF 68P81080C41-B

DISC Receiver IF 68P81080C41-B

DISC Receiver Back End 68P81080C41-B

EXT_MIC_IN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B EXT_MIC_IN Controller Interface 68P81083C20-B

TX_IN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B TX_IN Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B

RSSI Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

PWR_RST Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B PWR_RST Audio PA & Voltage Regulators

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 98: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

90Revision B, 03/99

PWR_RST Controller/Main Con-troller

68P81083C20-B

RX_HI&FIL_AUDIO_OUT

Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B RX_HI&FIL_AUDIO_OUT

Controller Interface 68P81083C20-B

RX_HI Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B RX_HI Controller Interface 68P81083C20-B

1200 Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B 1200 Controller/Main Con-troller

68P81083C20-B

UP_CLK Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B UP_CLK Controller/Main Con-troller

68P81083C20-B

PL_RX Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B PL_RX Controller/Main Con-troller

68P81083C20-B

RX_DATA Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B RX_DATA Controller/Main Con-troller

68P81083C20-B

RX_AUDIO Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B RX_AUDIO Audio PA & Voltage Regulators

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 99: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9991

FILTERED_AUDIO

Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B FILTERED_AUDIO

Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B

ASFIC_MIC_AUD_OUT

Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B ASFIC_MIC_AUD_OUT

Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B

VOX Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B VOX Controller/Main Con-troller

68P81083C20-B

ASFIC_PRE-EMP_OUT Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B ASFIC_PRE-EMP_OUT 68P81083C20-B

AUDIO_MOD Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B AUDIO_MOD Receiver IF 68P81080C41-B

AUDIO_MOD Receiver IF 68P81080C41-B

AUDIO_MOD Synthesizer 68P81080C41-B

FF_EN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B FF_EN Controller, Hear Clear/audio Block Diagram/Main Con-troller

68P81083C20-B

HCI_DIS Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B HCI_DIS Controller, Hear Clear/audio Block Diagram/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 100: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

92Revision B, 03/99

LC_DIS Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B LC_DIS Controller, Hear Clear/audio Block Diagram/Main Con-troller

68P81083C20-B

COMP_EN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B COMP_EN Controller, Hear Clear/audio Block Diagram/Main Con-troller

68P81083C20-B

HI_CLMP_EN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B HI_CLMP_EN Controller, Hear Clear/audio Block Diagram/Main Con-troller

68P81083C20-B

CH_ACT Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B CH_ACT Controller/Main Con-troller

68P81083C20-B

SQ_DET Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B SQ_DET Controller/Main Con-troller

68P81083C20-B

UNIV_IO Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B UNIV_IO Controller Interface 68P81083C20-B

UNIV_IO Controller, IO RSSI Buffers/Controller Interface/Main Con-troller

68P81083C20-B

COMP_EN Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B COMP_EN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 101: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9993

FF_EN Controller, Hear Clear/audio Block Diagram/Main Con-troller

68P81083C20-B FF_EN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

HI_CLMP_EN Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B HI_CLMP_EN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

RSSI Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

DISC Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B DISC Receiver IF 68P81080C41-B

DISC Receiver IF 68P81080C41-B

DISC Receiver Back End 68P81080C41-B

DISC Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

HCI_DIS Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B HCI_DIS Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

LC_DIS Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B LC_DIS Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 102: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

94Revision B, 03/99

FILTERED_AUDIO

Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B FILTERED_AUDIO

Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

ASFIC_MIC_AUD_OUT

Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B ASFIC_MIC_AUD_OUT

Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

9.3V Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

EXP_FILTERED_AUDIO Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B EXP_FILTERED_AUDIO

Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

EXP_AUDIO Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B EXP_AUDIO Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

RX_IN Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B RX_IN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

TX_IN Controller, Hear Clear/Audio Block Diagram/Main Con-troller

68P81083C20-B TX_IN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

UNIV_IO Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B UNIV_IO Controller Interface 68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 103: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9995

UNIV_IO Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

RSSI Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

UNIV_IO_OUT Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B BUFFERED DISCRIMINA-TOR

68P81083C20-B

RSSI_OUT Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B RSSI_OUT Controller/Main Con-troller

68P81083C20-B

RSSI_OUT Controller Interface 68P81083C20-B

9.3V Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Vdd Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

VAG Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B VAG Controller, ASFIC/AUdio BlockDiagram/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 104: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

96Revision B, 03/99

MIC_VOLTAGE Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B MIC_VOLTAGE Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

MIC_IN Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B MIC_IN Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

EMERGENCY Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B EMERGENCY Controller Interface 68P81083C20-B

B+_CTRL Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B B+_CTRL Controller/Main Con-troller

68P81083C20-B

IGNITION Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B IGNITION Controller Interface 68P81083C20-B

SW_B+_SENSE Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B SW_B+_SENSE Controller/Main Con-troller

68P81083C20-B

B+_ON_OFF Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B B+_ON_OFF Audio PA & Voltage Regulators/Controller Interface

68P81083C20-B

EMER_OUT Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B EMER_IN Controller/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 105: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9997

A+_SENSE Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B A+_SENSE Controller/Main Con-troller

68P81083C20-B

IGNITION_SENSE

Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B IGNITION_SENSE Controller/Main Con-troller

68P81083C20-B

B+_IGNITION Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B B+_IGNITION Audio PA & Voltage Regulators/Controller Interface

68P81083C20-B

+5V Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

SW_B+ Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

UNSW_+5V Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B UNSW_5V Audio PA & Voltage Regulators

68P81083C20-B

Vdd Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

BUS- Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B BUS- Controller Interface 68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 106: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

98Revision B, 03/99

BUS+ Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B BUS+ Controller Interface 68P81083C20-B

SCI_TX Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B SCI_TX Controller/Main Con-troller

68P81083C20-B

BUSY_OUT Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B BUSY_OUT Controller/Main Con-troller

68P81083C20-B

BUSY Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B BUSY Controller Interface 68P81083C20-B

RESET_OUT Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B RESET_OUT Controller/Main Con-troller

68P81083C20-B

LH_RESET Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B RESET Controller Interface 68P81083C20-B

RESET Controller Interface 68P81083C20-B

SCI_RX Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B SCI_RX Controller/Main Con-troller

68P81083C20-B

SCI_ECHO Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B SCI_ECHO Controller 68P81083C20-B

BUS_SCI Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B

BUSY_IN Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B BUSY_IN Controller/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 107: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/9999

RESET_IN Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B RESET_IN Controller/Main Con-troller

68P81083C20-B

CLOSED_RESET (On ClosedArchitecture Only)

Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B

+5V Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Vdd Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

IO2 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IO2 Controller Interface 68P81083C20-B

OUT2 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B OUT_2 Controller/Main Con-troller

68P81083C20-B

IO3 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IO3 Controller Interface 68P81083C20-B

VPP_PROGRAM

Controller/Main Con-troller

68P81083C20-B

OUT3 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B OUT_3 Controller/Main Con-troller

68P81083C20-B

IO4 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IO4 Controller Interface 68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 108: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

100Revision B, 03/99

OUT4 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B OUT_4 Controller/Main Con-troller

68P81083C20-B

IO5 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IO5 Controller Interface 68P81083C20-B

OUT5 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B OUT_5 Controller/Main Con-troller

68P81083C20-B

IO6 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IO6 Controller Interface 68P81083C20-B

OUT6 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B OUT_6 Controller/Main Con-troller

68P81083C20-B

IN2 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IN_2 Controller/Main Con-troller

68P81083C20-B

IN3 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IN_3 Controller/Main Con-troller

68P81083C20-B

IN4 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IN_4 Controller/Main Con-troller

68P81083C20-B

IN5 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IN_5 Controller/Main Con-troller

68P81083C20-B

IN6_:_RTSBIN Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B IN_6 Controller/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 109: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99101

Vdd Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

SW_B+ Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

+5V Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

RX_DATA_IN Controller/Main Con-troller

68P81083C20-B SW_5V:RX_DATA_IN

Controller Interface 68P81083C20-B

RTSB_OUT Controller/Main Con-troller

68P81083C20-B BUF_CH_EN:RTSB_OUT

Controller Interface 68P81083C20-B

RESET* Controller/Main Con-troller

68P81083C20-B RESET* Controller Interface 68P81083C20-B

PWR_RST Controller/Main Con-troller

68P81083C20-B PWR_RST Audio PA & Voltage Regulators

68P81083C20-B

PWR_RST Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

RESET_OUT Controller/Main Con-troller

68P81083C20-B RESET_OUT Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B

RESET_IN Controller/Main Con-troller

68P81083C20-B RESET_IN Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 110: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

102Revision B, 03/99

RX_DATA Controller/Main Con-troller

68P81083C20-B RX_DATA Controller, ASFIC/Audio Block Dia-gram/Main Controller

68P81083C20-B

ASN_SEL Controller/Main Con-troller

68P81083C20-B

K9.1_ENB Controller/Main Con-troller

68P81083C20-B K9.1_ENB Controller, Power Control/MainController

68P81083C20-B

OUT_3 Controller/Main Con-troller

68P81083C20-B OUT3 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

OUT_2 Controller/Main Con-troller

68P81083C20-B OUT2 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

AUPA_EN Controller/Main Con-troller

68P81083C20-B AUPA_EN Audio PA & Voltage Regulators

68P81083C20-B

JABBA_SEL Controller/Main Con-troller

68P81083C20-B O:JABBA_SEL_C:DTMF_SEL

Controller Interface 68P81083C20-B

PWR_RANGE Controller/Main Con-troller

68P81083C20-B PWR_RANGE Controller, Power Control/MainController

68P81083C20-B

DA_SEL Controller/Main Con-troller

68P81083C20-B DA_SEL Controller, Power Control/MainController

68P81083C20-B

PL_RX Controller/Main Con-troller

68P81083C20-B PL_RX Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

DUPLEX_SYN_SEL Controller/Main Con-troller

68P81083C20-B DUPLEX_SYN_SELECT Receiver IF 68P81080C41-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 111: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99103

BUF_SPI_DATA:SECURE_SEL

Controller/Main Con-troller

68P81083C20-B BUF_SPI_DATA:SECURE_SELECT

Controller Interface 68P81083C20-B

IGNITION_CLEAR

Controller/Main Con-troller

68P81083C20-B IGNITION_CLEAR Audio PA & Voltage Regulators

68P81083C20-B

ZIF_SEL Controller/Main Con-troller

68P81083C20-B ZIF_SEL Receiver IF 68P81080C41-B

ZIF_SEL Receiver IF 68P81080C41-B

ZIF_SEL Receiver BACK-END

68P81080C41-B

OUT_6 Controller/Main Con-troller

68P81083C20-B OUT6 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

BUSY_OUT Controller/Main Con-troller

68P81083C20-B BUSY_OUT Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B

B+_CTRL Controller/Main Con-troller

68P81083C20-B B+_CTRL Controller, Emer-gency Ignition/Con-troller Interface/Main Controller

68P81083C20-B

LOCK_DET Controller/Main Con-troller

68P81083C20-B LOCK_DET Receiver IF 68P81080C41-B

LOCK_DET Receiver IF 68P81080C41-B

LOCK_DET Synthesizer 68P81080C41-B

IN_3 Controller/Main Con-troller

68P81083C20-B IN3 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

IN_4 Controller/Main Con-troller

68P81083C20-B IN4 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 112: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

104Revision B, 03/99

ASN_INT Controller/Main Con-troller

68P81083C20-B ASN_INT_OPT_TX Controller Interface 68P81083C20-B

OUT_5 Controller/Main Con-troller

68P81083C20-B OUT5 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

OUT_4 Controller/Main Con-troller

68P81083C20-B OUT4 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

EMER_IN Controller/Main Con-troller

68P81083C20-B EMER_OUT Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

SW_B+_SENSE Controller/Main Con-troller

68P81083C20-B SW_B+_SENSE Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

DUPLEX_LOCK_DET (NotConnected For Half Duplex)

Controller/Main Con-troller

68P81083C20-B

IGNITION_SENSE Controller/Main Con-troller

68P81083C20-B IGNITION_SENSE

Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

IN_6 Controller/Main Con-troller

68P81083C20-B IN6_:_RTSBIN Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

JABBA_INT Controller/Main Con-troller

68P81083C20-B O:JABBA_INT_C:DTMF_SEL

Controller Interface 68P81083C20-B

SQ_DET Controller/Main Con-troller

68P81083C20-B SQ_DET Controller, ASFIC/Audio Block Diagram/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 113: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99105

IN_5 Controller/Main Con-troller

68P81083C20-B IN5 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

CH_ACT Controller/Main Con-troller

68P81083C20-B CH_ACT Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

IN_2 Controller/Main Con-troller

68P81083C20-B IN2 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

PL_TX Controller/Main Con-troller

68P81083C20-B PL_TX Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

TX_DATA Controller/Main Con-troller

68P81083C20-B TX_DATA Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

LG_DTMF Controller/Main Con-troller

68P81083C20-B LG_DTMF Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

1200 Controller/Main Con-troller

68P81083C20-B 1200 Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

BUSY_IN Controller/Main Con-troller

68P81083C20-B BUSY_IN Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 114: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

106Revision B, 03/99

A+_SENSE Controller/Main Con-troller

68P81083C20-B A+_SENSE Controller, Emer-gency Ignition/Controller Interface/Main Controller

68P81083C20-B

UP_CLK Controller/Main Con-troller

68P81083C20-B UP_CLK Controller, ASFIC/Audio Block Dia-gram/Main Controller

68P81083C20-B

MOD_A_B Controller/Main Con-troller

68P81083C20-B MOD_A_B Controller Interface 68P81083C20-B

SCI_RX Controller/Main Con-troller

68P81083C20-B SCI_RX Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B

SCI_TX Controller/Main Con-troller

68P81083C20-B SCI_TX Controller, SCI Driv-ers/Controller Inter-face/Main Controller

68P81083C20-B

SPI_RX_DATA Controller/Main Con-troller

68P81083C20-B SPI_RX_DATA Controller Interface 68P81083C20-B

SPI_TX_DATA Controller/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

CLK Controller/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

PA_DIS Controller/Main Con-troller

68P81083C20-B PA_DIS Controller, Power Control/MainController

68P81083C20-B

RSSI Controller/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 115: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

Revision B, 03/99107

RSSI_OUT Controller/Main Con-troller

68P81083C20-B RSSI_OUT Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B

RSSI_OUT Controller Interface 68P81083C20-B

LBAT Controller/Main Con-troller

68P81083C20-B LBAT Controller Interface 68P81083C20-B

TEMP Controller/Main Con-troller

68P81083C20-B TEMP Controller, Power Control/MainController

68P81083C20-B

VOX Controller/Main Con-troller

68P81083C20-B VOX Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

SYN_SEL Controller/Main Con-troller

68P81083C20-B SYN_SEL Receiver IF 68P81080C41-B

SYN_SEL Receiver IF 68P81080C41-B

SYNT_SEL Synthesizer 68P81080C41-B

ROSC_SEL Controller/Main Con-troller

68P81083C20-B ROSC_SEL Receiver IF 68P81080C41-B

ROSC_SEL Receiver IF 68P81080C41-B

ROSC_SEL Synthesizer 68P81080C41-B

ASFIC_SEL Controller/Main Con-troller

68P81083C20-B ASFIC_SEL Controller, ASFIC/Audio BlockDiagram/Main Con-troller

68P81083C20-B

VPP_PROGRAM

Controller/Main Con-troller

68P81083C20-B IO3 Controller, IO Buff-ers/Controller Inter-face/Main Controller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 116: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

108Revision B, 03/99

IO3 Controller Interface 68P81083C20-B

Vdd Controller/Main Con-troller

68P81083C20-B All Nodes with this Signal Name are Common within the Entire Radio

SW_5V:RX_DATA_IN

Controller Interface 68P81083C20-B RX_DATA_IN Controller/Main Con-troller

68P81083C20-B

BUF_CH_EN:RTSB_OUT

Controller Interface 68P81083C20-B RTSB_OUT Controller/Main Con-troller

68P81083C20-B

O:JABBA_SEL_C:DTMF_SEL

Controller Interface 68P81083C20-B JABBA_SEL Controller/Main Con-troller

68P81083C20-B

BUF_SPI_DATA:SECURE_SELECT

Controller Interface 68P81083C20-B BUF_SPI_DATA:SECURE_SEL

Controller/Main Con-troller

68P81083C20-B

O:JABBA_INT_C:DTMF_SEL

Controller Interface 68P81083C20-B JABBA_INT Controller/Main Con-troller

68P81083C20-B

MOD_A_B Controller Interface 68P81083C20-B MOD_A_B Controller/Main Con-troller

68P81083C20-B

SPI_RX_DATA Controller Interface 68P81083C20-B SPI_RX_DATA Controller/Main Con-troller

68P81083C20-B

RSSI_OUT Controller Interface 68P81083C20-B RSSI_OUT Controller, IO RSSI Buffers/Controller Interface/Main Controller

68P81083C20-B

RSSI_OUT Controller/Main Con-troller

68P81083C20-B

LBAT Controller Interface 68P81083C20-B LBAT Controller/Main Con-troller

68P81083C20-B

Table 1: Schematic Diagram Interconnection List

From/To From/To

Signal Name Schematic Diagram Title

Publication No. Signal Name Schematic Diagram Title

Publication No.

Page 117: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

SERVICE MANUAL QUESTIONNAIREWe believe that reports from users provide valuable information for producing quality manuals. By taking a few moments to answer the following questions as they relate to this specific man-ual, you can take an active role in the continuing effort to ensure that our manuals contain the most accurate and complete information of benefit to you. Thank you for your cooperation.

In reference to Manual Number: 68P81080C41-B

MCS 2000™ Mobile Radio1. Please check all the appropriate boxes:

2. How would you rate the overall organization of this manual?

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3. Did this Service manual provide you with the information necessary to service and maintain the specific equipment?

very much so generally yes to some extent no

4. How do you rate this particular Service Manual?

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5. We would appreciate any corrections or recommendations for improving this manual. Please include the specific page number(s) of the diagram or procedure in question.

a. Disassembly Procedures:(Page No. __________ )

b. Alignment Procedures:(Page No. __________ )

c. Exploded Views:(Page No. __________ )

Com

plet

e

Inco

mpl

ete

Cor

rect

Inco

rrec

t

Cle

ar

Con

fusi

ng

Size

Ade

quat

e

Size

Too

Sm

all

Not

Cov

ered

in T

his

Man

ual

DisassemblyProcedures

AlignmentProcedures

ExplodedViews

SchematicDiagrams

Circuit BoardDetails

Electrical PartsLists

Exploded ViewParts List

Cut

alo

ng d

otte

d lin

e

Page 118: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

FOLD FOLD(Continued)

Please specify the page number along with any corrections or recommendations for improvement.

d. Schematic Diagrams: (Page No. __________ )

e. Component Location Details: (Page No. __________ )

f. Electrical Parts List: (Page No. __________ )

g. Exploded View Parts List: (Page No. __________ )

6. General comments/suggestions:

Name:............................................................................................................................................Company: ......................................................................................................................................

Customer COSC MSS FTR OtherAddress: ........................................................................................................................................City/State/Zip:................................................................................................................................Phone Number (Please include Area Code): ................................................................................

PLEASE USE TAPE TO SEAL

POSTAL REGULATIONS PROHIBIT USE OF STAPLES

NO POSTAGENECESSARY

IF MAILEDIN THE

UNITED STATES

BUSINESS REPLY MAILFIRST CLASS MAIL PERMIT NO 9040 FT. LAUDERDALE, FL

POSTAGE WILL BE PAID BY ADDRESSEE

Attention: Media and Communication8000 W. Sunrise BoulevardFt. Lauderdale, FL 33322

Page 119: MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a companion volume to Service Manual Volume 1 for MCS 2000 Radios, Motorola Stock Number

MCS 2000 Mobile Radio Service Instructions

Publication Number 68P81080C41-B

VHF Frequency Range Specific

6881080C41-B