MCS 2000 Mobile Radio Service Instructions - Volume 2b ...in the VHF frequency range. It is a...
Transcript of 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 Group8000 W. Sunrise BoulevardFt. Lauderdale, FL 33322
68P81080C41-B, Issued 03/99
MCS 2000 Mobile Radio Service Instructions
Volume 2b
VHF Frequency Range Specific
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Safety Summary
1
Safety InformationEvery 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.
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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)
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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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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
Revision A, 12/96 Troubleshooting 19
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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
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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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Revision A, 12/96
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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24Re
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96
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.
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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
Revision A, 12/96 25
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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
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Revision A, 12/96 29
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
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30Re
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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
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Revision A, 12/96
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
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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
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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
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34 Revision A, 12/96
NOTES
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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
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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
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• 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
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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
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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
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Figure 5. PA Board Section Locations
RF POWER AMPLIFIER
ANTENNASWITCH
HARMONICFILTER
POWERDETECTOR
MAEPF-25893-O
43 Reference Drawings Revision B, 03/99
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Notes
44 Reference Drawings Revision B, 03/99
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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)
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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
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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
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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
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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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/58.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/59.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/60.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/61.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/62.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/63.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/64.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/65.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/66.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/67.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/68.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/69.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/70.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/71.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/72.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/73.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/74.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/75.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/76.jpg)
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.
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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)
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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.
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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
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72 Revision B, 03/99
NOTES
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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
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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.
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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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/84.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/85.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/86.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/87.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/88.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/89.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/90.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/91.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/92.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/93.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/94.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/95.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/96.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/97.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/98.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/99.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/100.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/101.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/102.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/103.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/104.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/105.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/106.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/107.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/108.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/109.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/110.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/111.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/112.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/113.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/114.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/115.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/116.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/117.jpg)
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](https://reader034.fdocuments.in/reader034/viewer/2022051804/5ff1aa2a3c18291e683903ab/html5/thumbnails/118.jpg)
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
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MCS 2000 Mobile Radio Service Instructions
Publication Number 68P81080C41-B
VHF Frequency Range Specific
6881080C41-B