HiFi - Teac AG-790 SM

15
AG-790 SERVICE MANUAL AM/FM Stereo Receiver Effective : April, 2003 S-0092A NOTES PC boards shown are viewed from parts side. The parts with no reference number or no parts number in the exploded views are not supplied. As regards the resistors and capacitors, refer to the circuit diagrams contained in this manual. £ Parts marked with this sign are safety critical components. They must be replaced with identical components - refer to the appropriate parts list and ensure exact replacement. CONTENTS 1 SPECIFICATIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・2 2 ADJUSTMENTS AND CHECKS ・・・・・・・・・・・・・・・・・・・・・・・・3 3 EXPLODED VIEWS AND PARTS LIST ・・・・・・・・・・・・・・・・・6 4 PC BOARDS AND PARTS LIST ・・・・・・・・・・・・・・・・・・・・・・・・8

Transcript of HiFi - Teac AG-790 SM

  • AAGG--779900

    SERVICE MANUAL

    AM/FM Stereo Receiver

    Effective : April, 2003 S-0092A

    NOTES

    PC boards shown are viewed from parts side. The parts with no reference number or no parts number in the

    exploded views are not supplied. As regards the resistors and capacitors, refer to the circuit diagrams

    contained in this manual. Parts marked with this sign are safety critical components. They

    must be replaced with identical components - refer to the appropriateparts list and ensure exact replacement.

    CONTENTS1 SPECIFICATIONS 22 ADJUSTMENTS AND CHECKS 33 EXPLODED VIEWS AND PARTS LIST 64 PC BOARDS AND PARTS LIST 8

  • 1 SPECIFICATIONS

    2

    Amplifier SectionOutput Power....100 + 100 watts RMS (0.9 % THD, 1 kHz, 8 ohms)Total Harmonic Distortion.................... 0.05 % (at 70 watts,1 kHz)Input Sensitivity/Impedance .................. PHONO: 5 mV/22 kohms

    LINE: 300 mV/22 kohmsFrequency Response ...................... PHONO: 20 Hz20 kHz, 3 dB

    LINE: 20 Hz50 kHz, +1/3 dBSignal-to-Noise Ratio ................................ PHONO: 80 dB (IHF-A)

    LINE: 80 dB (IHF-A)Tone Control ............................................ BASS: 10 dB at 100 Hz

    TREBLE: 10 dB at 10 kHzLoudness Control (Volume at 40 dB Position) ..............................

    +9 dB at 100 Hz, +8 dB at 10 kHz

    FM Tuner Section(Without notes 98.1 MHz, 65 dBf)

    Tuning Range .................... 87.5 MHz108.0 MHz (100 kHz steps)Usable Sensitivity (IHF) ............................................ Mono: 20 dBf50 dB Quieting Sensitivity ................ Mono: 39 dBf, Stereo: 46 dBfCapture Ratio ...................................................................... 2.8 dBImage Rejection Ratio .......................................................... 20 dBAM Suppresion Ratio............................................................ 48 dBHarmonic Distortion (1 kHz) .............. Mono: 0.4 %, Stereo: 0.5 %Frequency Response................................ 30 Hz15 kHz, +2/3 dBStereo Separation (1 kHz) .................................................... 35 dBSignal-to-Noise Ratio ........................ Mono: 57 dB, Stereo: 55 dB

    AM Tuner SectionTuning Range .......................... 530 kHz1,720 kHz (10 kHz steps)Usable Sensitivity ............................................................ 55 dB/mTotal Harmonic Distortion .................................... 1 % at 85 dB/mSignal-to-Noise Ratio ........................................ 48 dB at 85 dB/m

    GeneralPower Requirements.................................. 120 V/230 V, 50-60 Hz Power Consumption ............................................................ 180 W AC Outlets ................ Unswitched x 2, Total 100 W max (1 A max)Dimensions (W x H x D)................................ 435 x 139 x 335 mm

    (17-1/8" x 5-1/2" x 13-3/16")Weight (net) ................................................ 9.4 kg (20-11/16 lbs)Standard Accessories .................................. AM Loop Antenna x 1

    FM T Type Antenna x 1Remote Control Unit x 1

    Design and specifications are subject to change without notice.

    Voltage Conversion(General export models only)

    Be sure to remove the power cord from the AC outlet beforerepositioning the voltage converter switch.

    1. Locate the voltage selector on the rear panel.2. Using a flat-bladed screwdriver, set to the appropriate

    230V or 120V position according to your area.

    IN NORTH AMERICA USE ONLY ON 120 V SUPPLY.

  • 2 ADJUSTMENTS AND CHECKS

    3

    2-1 AMPLIFIER SECTION

    Bias Current Adjustment

    1. Turn the unit on, and set the input selector switch to "CD".2. Set 7VR1 and 7VR2 to the center position.3. Connect the DC voltmeter as shown below after preheating for

    10 minutes, and adjust 7VR2 (Lch) so that the voltagebecomes 3.31.3mV.

    4. Adjust 7VR1 (Rch) in the same way.

    7VR17VR2

    7R46 7R44

    0.33/5W 0.33/5W

    DC voltmeter

    7R45 7R43

    0.33/5W 0.33/5W

    DC voltmeter

    MAIN PCB

  • 4

    ITEMSETTING ADJUSTMENT

    POINTS ADJUST

    2. AM Sensitivity

    600 kHz/1500 kHz50 dB/m400 Hz (30 % Mod)

    REC OUT

    AM 600 kHz 2T1 (BLK) Max.

    3. AM IF

    1000 kHz50 dB/m400 Hz (30 % Mod)

    REC OUT AM 1000 kHz 2T3 (WHT) Max.

    4. FM Sensitivity

    90 MHz10~20 dBf1 kHz (100 % Mod)

    REC OUT FM 90 MHz 2L2 (4.5T) Max.

    5. FM Distortion

    98 MHz60 dBf1 kHz (100 % Mod)

    REC OUT FM 98 MHz 2T4 (PINK) Min. distortion

    6. FM Stereo

    98 MHz60 dBfStereo signal L-R

    REC OUT FM 98 MHz 2T5, 2T6 Min. distortion

    1. VT Adjust2R19 (VT)2J2 (GND)

    FM 87.5 MHz 2L3 (3.5T) DC 1.00.05V

    INPUT OUTPUT AG-790

    After adjusting 2TC2, readjust 2T1 at 600 kHz.

    AM 1500 kHz 2TC2 Max.

    AM 1720 kHz

    AM 530 kHz

    FM 108.0 MHz

    Check

    2T2 (RED)

    Check

    8.0V

    DC 1.10.05V

    DC 8.00.5V

    2-2 TUNER SECTION

  • 5

    AC VoltmeterFM Signal Generator

    Stereo Signal Generator

    Distortion Analyzer

    D

    E

    G

    F

    AC Voltmeter

    AM Signal GeneratorB

    C

    AM LoopAntenna

    60cm

    2T3

    2T6

    2T5

    2T2

    2T1

    2T4

    2L2

    2L3

    2TC22R192J2 TUNER PCB

    +

    DC VoltmeterA

  • 3 EXPLODED VIEWS AND PARTS LIST

    6

  • 7

    EXPLODED VIEW LIST

    REF.NO. PARTS NO. DESCRIPTION REMARKS

    1 9A09760000 TONE KEY 530503500 2 9A09759900 TUNING KEY 530503300 3 9A09759800 FUNCTION KEY 530503400 4 9A09760200 VOLUME KNOB 530503600 5 9A09759700 DISPLAY LENS 510503800

    6 9A09759600 PANEL 510503700 7 9A09760100 POWER KNOB 530503200 8 9A06602800 POWER SWITCH 180222501 9 9A09760300 SP KNOB 530503100 10 9A09758660 SP SEL PCB ASSY 037900303

    11 9A09758160 HEADPHONE PCB ASSY 037900405 12 9A09755060 FRONT PCB ASSY 037900105 13 9A09760700 TOP COVER 520505400 14 9A09760600 REAR COVER 520505300 15 9A06900600 CORD BUSHING 550011700

    16 9A09580200 AC POWER CORD 210183011 17 9A09759060 SP JACK PCB ASSY 037900605 18 9A09752260 MAIN PCB ASSY 037900206 19 9A09756560 POWER PCB ASSY 037900505 21 9A09760500 BOTTOM COVER 520505200

    22 9A09759500 POWER TRANSFORMER 159642022 23 9A09760900 HEAT SINK 560502200 24 9A06901200 H/S BRACKET 540082800 25 9A06536400 LEG(GOLD) 540082601 26 9A09581500 RUBBER PAD 540503600

    27 9A06536300 LEG(BLACK) 540082600 36 9A06900700 NAME PLATE 510104300 37 9A09757660 TUNER PCB ASSY 033700305 38 9A09760800 BRACKET 520505500 39 9A09591600 PCB SUPPORT 550505200

    40 9A09760400 PCB SUPPORT 550505300 42 9A06602900 AC SOCKET 26CS18401 43 9A09758500 HEADPHONE JACK HOLDER 550505400 44 9A09759400 VOLTAGE SWITCH 180222902 45 9A06904300 GND TERMINAL,M3 320018601 46 9A09592000 SILICON RUBBER,T0-3P2 322228370

    INCLUDED ACCESSORIES

    REF.NO. PARTS NO. DESCRIPTION REMARKS

    9A09551200 OWNER'S MANUAL,EFSP 600520225 9A09763000 REMOTE CONTROL UNIT,UR-420 500079000 9A06902500 FM ANT 59W360100 9A06902600 AM ANT 59W360200

  • 8

    4 PC BOARDS AND PARTS LIST

    MAIN PCB

  • 9

    SP JACK PCB

    SP SEL PCB

    HEADPHONE PCB

    POWER PCB

    FRONT PCB

    TUNER PCB

  • MAIN PCB ASSY

    REF.NO. PARTS NO. DESCRIPTION

    9A09752260 MAIN PCB ASSY 9A09752300 MAIN PCB 9A06896100 FUSE CLIP 9A09754600 RCA JACK,RCA602 9A09754700 RCA JACK,RCA402

    9A09754800 WAFER,3P 9A09754900 WAFER,5P

    1C1 9A09586700 C,ELEC 35V 100UF M 1C4-5 9A09586600 C,ELEC 25V 2200UF M 1C12 9A09586500 C,ELEC 25V 100UF M

    1C14-15 9A09752500 C,ELEC 70V 8200UF M 1D1-8 9A09589300 DIODE,IN4004 1D9-12 9A09753100 DIODE,6A10 1D13-14 9A09589500 DIODE,IN4148 1D15-18 9A09589300 DIODE,IN4004

    1D19-22 9A09589500 DIODE,IN4148 1D23 9A09589100 DIODE,ZENER 24V 1W 1FU1-2 9A09753200 FUSE,6.3A 250V SLOW BLOW1FU3-4 9A09753300 FUSE,2A 250V SLOW BLOW1N1 9A09590800 IC,L7812CV

    1N2 9A09590900 IC,L7912CV 1N3 9A09590700 IC,L7805CV 1N4 9A09753400 IC,L7809CV 3D1 9A09588800 DIODE,ZENER 6V8 1/2W 3N1 9A09753500 IC,TC9421

    3N2 9A09590500 IC,TC4066BP 3V1-2 9A09589600 TR,2SC1815GR 4N1 9A09590600 IC,JRC4560D 5N1 9A09590600 IC,JRC4560D 7C28 9A09587100 C,ELEC 63V 47UF M

    7D1-4 9A09589000 DIODE,ZENER 24V 1/2W 7D5-6 9A09589500 DIODE,IN4148 7D7 9A09589200 DIODE,ZENER 30V 1/2W 7D8 9A09589500 DIODE,IN4148 7D9 9A09588900 DIODE,ZENER 12V 1/2W

    7L1-2 9A09591000 COIL,SPRING 1.5UH7R25-28 9A06889900 R,1/2W 3.3K 7R43-46 9A09753600 R,CEMENT 5W R33 J 7R61-62 9A09585400 R,2W 6R1 J 7R68 9A06889900 R,1/2W 3.3K

    7R70 9A07127500 R,2W 47 FMO 7R77-78 9A09585500 R,2W 10 J 7V1-4 9A09589700 TR,2N5551 7V5-10 9A09589800 TR,2N5401 7V11-14 9A09589700 TR,2N5551

    7V15-16 9A09753800 TR,2SD669A 7V17-18 9A09753900 TR,2SB649A 7V19-20 9A09754000 TR,2SC5200-O 7V21-22 9A09754100 TR,2SA1943-O 7V23-24 9A09589700 TR,2N5551

    7V25 9A09589800 TR,2N5401 7V26-29 9A09590100 TR,2SC8050D 7VR1-2 9A09585700 VR,SEMI-FIXED 300 J RELA-D 9A09591100 RELAY,12V 5A

    FRONT PCB ASSY

    REF.NO. PARTS NO. DESCRIPTION

    9A09755060 FRONT PCB ASSY 9A09755100 FRONT PCB 9A09756400 VFD DISPLAY

    8D1 9A09592400 DIODE,ZENER 5V1 1/2W 8D2-7 9A09589500 DIODE,IN4148

    8G1 9A09592800 OSC,CRYSTAL 4.433M8IR1 9A09755300 INFRARED RECEIVER,SM00388N1 9A09755400 IC,HT48R50A-1 8N2 9A09755500 IC,PT6311 8N3 9A09592600 IC,HT24LC02

    8V1 9A09755700 TR,2SA1015GR8VR1 9A09755800 ENCODER,R162EC-D1-20F-24CLED1-3 9A09755900 LED,M3 RED SW1-16 9A09593100 SW,TACT

    TUNER PCB ASSY

    REF.NO. PARTS NO. DESCRIPTION

    9A09757660 TUNER PCB ASSY 9A09625000 TUNER PCB 9A09625100 TUNER SHIELD CASE

    2D1-2 9A09589500 DIODE,IN4148 2G1 9A09622100 FILTER,CERAMIC L10.7MS2 R

    2G2 9A09622200 FILTER,CERAMIC SFU450B 2G3 9A09622100 FILTER,CERAMIC L10.7MS2 R2G4 9A09622300 OSC,CRYSTAL 4.5MHZ2L1 9A09622400 COIL,SPRING 3.5T M4.5 2L2 9A09622500 COIL,SPRING 4.5T M3.5

    2L3 9A09622600 COIL,SPRING 3.5T M3.5 2L4 9A09622700 INDUCTOR,AL0410 1022L5 9A09622800 INDUCTOR,AL0410 2212N1 9A09622900 IC,TA2149N 2N2 9A09623000 IC,TC9257F

    2T1 9A09623800 IFT,AM RF 10B(BLK) 2T2 9A09623900 IFT,AM OSC 7B(RED) 2T3 9A09624000 IFT,AM IFT 7B(WHT) 2T4 9A09624100 IFT,FM DET 7B(PNK) 2T5-6 9A09624200 IFT,MPX 8B(BLK)

    2TC2 9A09624300 SVC,CYM1-2/7 2V1 9A09624400 FET,2SK161GR 2V2 9A09624700 TR,2SC9018H 2V3 9A09624600 TR,2SC9014C 2V4-5 9A09589600 TR,2SC1815GR

    2V8 9A09624700 TR,2SC9018H 2VD1-2 9A09624800 DIODE,VARACTOR V1043 2VD3-4 9A09624900 DIODE,VARACTOR V149B 2X1 9A07129000 ANT JACK

    10

  • HEADPHONE PCB ASSY

    REF.NO. PARTS NO. DESCRIPTION

    9A09758160 HEADPHONE PCB ASSY 9A09758200 HEADPHONE PCB 9A09758500 HEADPHONE JACK HOLDER

    7D11-12 9A09589500 DIODE,IN4148 7K1 9A06535000 HEAD PHONE JACK 7R75-76 9A09758300 R,2W 470 J

    SP SEL PCB ASSY

    REF.NO. PARTS NO. DESCRIPTION

    9A09758660 SP SEL PCB ASSY 9A09758700 SP SEL PCB

    SWA-B 9A09758800 SP SELECTOR SW

    SP JACK PCB ASSY

    REF.NO. PARTS NO. DESCRIPTION

    9A09759060 SP JACK PCB ASSY 9A09759100 SP JACK PCB 9A09759200 SP JACK

    POWER PCB ASSY

    REF.NO. PARTS NO. DESCRIPTION

    9A09756560 POWER PCB ASSY 9A09756600 POWER PCB 9A06896100 FUSE CLIP

    C1-3 9A09587200 C,275V 0.01UF K

    FU1 9A06534900 FUSE,2A 125V SLOW BLOWFU2 9A09753200 FUSE,6.3A 250V SLOW BLOWFU3 9A09756800 FUSE,3.15A 250V SLOW BLOWL1 9A09756700 COIL,TOROID

    11

  • 4 52 31

    C

    B

    A

    SCHEMATIC DIAGRAM AG-790 MAIN PCB (1/2)

    1 st Issue; March 2003

    4C1622

    4C1522

    +9V

    1I/O

    1

    1O/I

    2

    2O/I

    3

    2I/O

    4

    2C5

    3C6

    VSS

    73I

    /O8

    3O/I

    9

    4O/I

    10

    4I/O

    11

    4C12

    1C13

    VD

    D14

    3N2CD4066

    1234

    1XS5

    1231XS6

    3C34104

    3C32152

    3C28103

    3C26473

    3C384U7/50V

    3C3647U/16V

    3C30

    0.47

    U/5

    0V

    3C202U2/50V

    SW-O

    UT

    33

    R-T

    O-I

    32

    T1

    31

    T2

    30

    T3

    29

    R-T

    O-O

    28

    R-V

    RIN

    27

    LD

    126

    LD

    225

    A-G

    ND

    24

    VR

    -OU

    T23

    PVR-IN 22

    R-FOUT 21

    R-ROUT 20

    VDD 19

    STB 18

    DATA 17

    CK 16

    GND 15

    L-ROUT 14

    L-FOUT 13

    FVR-IN 12

    VR

    -OU

    T11

    A-G

    ND

    10

    LD

    29

    LD

    18

    L-V

    RIN

    7

    L-T

    O-O

    6

    T3

    5

    T2

    4

    T1

    3

    L-T

    O-I

    2

    SW-O

    UT

    1

    L-IN444

    L-IN343

    L-IN242

    L-IN141

    VSS40

    VREF39

    VCC38

    R-IN137

    R-IN236

    R-IN335

    R-IN434

    3N1TC9421

    +12

    -12V -12V

    3R23470

    3C112U2/50V

    4R12180K

    4R4390

    4R18 1004C20

    47U/16V

    4N1-24558D

    4N1-14558D

    5C647U/16V

    5C547U/16V

    5R10100

    5R9100

    5R847K

    5R747K

    5R21K

    5R11K

    3C1471

    3C2471

    3C3471

    3C4471

    3C6471

    3C7471

    3C8471

    3R8 1K

    3R7 1K

    3R6 1K

    3R5 1K

    3R4 1K

    3R3 1K3R2 1K

    3R1 1K

    4R141k

    CD/L

    PHONO/R

    CD/R

    PHONO/L

    REC/L

    AUX/L

    AUX/R

    TAPE/L

    REC/R

    TAPE/R

    4R1470

    4R2470

    4R522K

    4R622K

    4C1471

    4C2471

    4C3181

    4C4181

    4C5181

    4C6181

    4C9102

    4C10102

    4C13223

    4C14223

    4C11562

    4C12562

    4R9 12K

    4R10 12K

    4R7270

    4R8270

    4C747U/16V

    4C172U2/50V

    4C18

    2U2/

    50V

    4C1947U/16V

    4C847U/16V

    4R131k

    5C3101

    5C4101

    3R9 47K

    3R10 47K

    3R11 47K

    3R12 47K

    3R13 47K

    3R14 47K

    5N1-14558D

    5N1-24558D

    4R17100

    4R3390

    4R11180K

    3C122U2/50V

    3C142U2/50V

    3C42100U/16V

    3C152U2/50V

    3C47

    100U

    /16V

    3C46104

    +12

    3C132U2/50V

    3C162U2/50V

    3C232U2/50V

    3C242U2/50V

    3C182U2/50V

    3C4147U

    3C172U2/50V

    3C192U2/50V

    3R161k

    3R151k

    3R191K

    3R201K

    3R182K2

    3R21100

    4R1533K

    4R1633K

    3C43104

    1231XS1

    3V22SC2878

    3V12SC2878

    3R172K2

    5R347k

    5R447k

    5R615k

    5R515k

    3C290.47U/50V 3C35

    47U/16V

    3C374U7/50V

    3C394U7/50V

    3C404U7/50V

    5C147U/16V

    5C247U/16V

    3C25473

    3C27103

    3C31152

    3C33104

    3C212U2/50V

    3C222U2/50V

    MU

    TE

    TA

    PE

    /TA

    PE

    6

    5

    7

    4

    12

    3

    8

    1

    3

    2

    4

    5

    67

    8

    TUNER IN

    R L

    3R22100

    +9V

    3C44100U/16V

    3C45104

    3C5471

    3R2422k

    3R2522K

    3D16V8

    3R28 100K

    3R26100K

    3R27 100K

    3R30100K

    3R29100K

    3R31 100K

    3R33100K

    3R32 100K

    3R34 100K

    3R36 100K

    3R35100K

    3R37100K

    3R3947K

    3R3847K

    L-1

    R-1

    AM/FM Stereo ReceiverAAGG--779900

  • 4 52 31

    C

    B

    A

    SCHEMATIC DIAGRAM AG-790 MAIN PCB (2/2), HEADPHONE PCB, SP SEL PCB, SP JACK PCB, POWER PCB

    7C3110P

    7C3010P

    S27R7810/2W

    7R7710/2W

    7V255401

    S1PO

    WE

    R S

    W

    C1

    103/

    250V

    FU26.3A/250V

    1C15

    6800

    U/7

    0V

    1R3

    15K

    1C14

    6800

    U/7

    0V

    1R215K

    1D101N5404

    1D111N5404

    1D121N5404

    1D91N5404

    7C22104

    7C28

    47U

    /63V

    1D15

    4004

    1D18 4004

    1D144148

    7R6910K

    7R70

    100

    7R7347K

    7R74

    47K

    1C1310U/63V

    1R5 22K

    7C27220U/16V

    7C26220U/16V

    1D13

    4148

    7R7210K

    7C254U7/63V

    7C23102

    7R6356K

    7R5922K

    7V298050D

    7V288050D

    7V278050D

    7V268050D

    7C21

    104

    7R62

    5.1/

    2W7R

    6022

    K

    7R61

    5.1/

    2W

    7R71

    10K

    7C1747U/25V

    7R511K

    7R1522K

    7R19100

    7R17100

    7V15551

    7R11K

    7C1

    4U7/

    50V

    7R53K3

    7R73K3

    7R253K3/0.5W

    7R29220

    7C5

    47U

    /63V

    7V35551

    7R9100

    7R11100

    7R1322K

    7V95401

    7V15669A

    7V195200

    7V211943

    7V17649A

    7V135551

    7V1155517V55401

    7V75401

    7C9104

    7C1330P

    7R313K3

    7R331K5

    7VR1300

    7C1530P

    7R35

    220

    7R213K3 7R23

    3K3

    7C747U/63V

    7C11104

    7R27

    3K3/

    0.5W 7R49

    33K

    7R37220

    7R3933

    7R43

    0.33

    /5W

    7R45

    0.33

    /5W

    7R47100

    7R41100

    7V235551

    7R53

    3K3

    7R55

    27K

    7C194U7/50V

    7L11.5uH

    7L21.5uH

    7C204U7/50V

    7R56

    27K

    7R54

    3K3

    7V245551

    7R42100

    7R48100

    7R46

    0.33

    /5W

    7R44

    0.33

    /5W

    7R4033

    7R38220

    7R5033K

    7R28

    3K3/

    0.5W7C12

    104

    7C847U/63V

    7R243K3

    7R223K3

    7R36

    220

    7C1630P

    7VR2300

    7R341K5

    7R323K3

    7C1430P7C10

    104

    7V85401

    7V65401

    7V125551

    7V145551

    7V18649A

    7V221943

    7V205200

    7V16669A

    7V105401

    7R1422K

    7R12100

    7R10100

    7V45551

    7C6

    47U

    /63V

    7R30220

    7R263K3/0.5W

    7R83K3

    7R63K3

    7C2

    4U7/

    50V

    7R21K

    7V25551

    7R18100

    7R20100

    7R1622K

    7R521K

    7C1847U/25V

    7R433K

    7C4

    100P

    7C3

    100P

    7R333K

    7C24

    10U

    /63V

    7R672K7

    7R68

    3K3/

    1W

    7R64

    510K

    7D84148

    7R65220K

    7R66

    4K7

    1XS1

    1XS2

    1D31N4004

    1D41N4004

    1D21N4004

    1D11N4004

    1C1

    100U

    /35V

    1R1100

    1XS3

    1D51N4004

    1D81N4004

    1D61N4004

    1D71N4004

    1C4

    2200

    U/2

    5V

    1C5

    2200

    U/2

    5V

    1N378M05

    1N1

    7812

    1N2

    7912 1C

    1010

    00U

    /16V

    1C11

    1000

    U/1

    6V

    1C3

    470U

    /16V

    1D16

    4004

    1D17

    40041

    R4

    2K2

    1C12

    100U

    /25V

    RELD

    1FU16.3A/250V

    1FU26.3A/250V

    7D730V

    7D124V

    7D3

    24V

    7D224V

    7D4

    24V

    7D1012V

    7R5718K

    7D54148

    7D64148

    7R5818K

    12

    1XP12

    12

    1XP13+12

    -12V

    AC 120V/230V

    SEL.SWVOLTAGE

    +5VG

    123

    1XP7

    123

    1XS7

    SWB

    SWA

    RELARELB

    1873245 7K17R75 680

    7R76 680

    1X1Speakers out

    7C29103

    RELC

    ON

    OF

    F

    ON

    OF

    F

    7D114148

    7D124148

    R

    LG

    LR

    1 2 3 4

    1XS8

    B C A V

    1 2 3 4

    1XP8

    VACB

    OFF OFF OFF ONONON

    R

    LG

    1 2 3 4 5 6 7

    1XS9

    1 2 3 4 5 6 7

    1XP9

    AL

    +A

    R+

    BL

    +B

    R+

    AL

    -

    AR

    -G

    AL

    +

    BL

    +

    AR

    +

    BR

    +

    AL

    -

    BL

    -

    AR

    -

    BR

    -A

    L+

    AR

    +B

    L+

    BR

    +A

    L-

    AR

    -G

    L R RL

    L1-1

    L1-2

    C3103/250V

    C2103/250V

    AC JACK OUT

    FU3

    3.15

    A/2

    50V

    1N4

    7809

    +9

    +12VG

    1 2 3 4 5 6 7

    1XS4P

    OW

    2.1V

    -24V

    0V 2.1V

    DG

    ND

    +5V

    1D19

    1N41

    48

    1D20

    1N41

    48

    1D22

    1N41

    48

    1D21

    1N41

    48

    1C18

    100U

    /16V

    1C19

    220U

    /16V

    1FU3 2A/250V

    1FU4 2A/250V

    RL

    FU12.5A/250V

    1D2324V/1W

    R-1

    L-1

    1 st Issue; March 2003AM/FM Stereo Receiver

    AAGG--779900

  • 4 52 31

    C

    B

    A

    SCHEMATIC DIAGRAM AG-790 TUNER PCB

    1234

    1XS14

    2L3 3.5T

    2L2 4.5T

    2X1

    2T5

    2C5152

    *2R12 1K

    2C37

    100U

    /10V

    2C28203

    2L4102

    2C20203

    2D1IN4148

    2L5221

    2C43203

    2C38100U/10V

    1 2

    1XS13

    2C45203

    2C24102

    2R202K

    2R21 2K

    2R22 2K

    2G44.5M 2R23

    2K4

    2C4130

    2C4230

    2C44103

    2R171K

    2C403U3/50V

    2V5C1815GR

    2V4

    C18

    15G

    R

    2C46203 2C

    4710

    0U/1

    6V2C

    3947

    U/1

    6V

    2R18

    1K

    2R198K2

    1 2 3 1XS10

    12

    1XS12

    XT1

    XTN2

    PERIOD3

    CLOCK4

    DATA5

    OT-16

    OT-27

    OT-38

    OT-49

    I/O-510 I/O-6 11

    VDD 12

    AMIN 13

    FMIN 14

    GND 15

    IFIN2 16

    I/O-8 17

    I/O-7 18

    DO1 19

    DO220

    2N2TC9257F

    2C16 203

    *2TC12/7

    2VD1V104

    2VD3V149B

    2C26

    104

    2C27104

    2R11

    3K3

    2C361U/50V

    2R133K3

    2C354U7/50V

    2C19102

    2C22102

    2C23102

    2C21102

    2R15300K

    2R142K

    2R9100K

    2C10 501

    2C15203

    2C920

    2R108K2

    2R6 100K 2C

    1320

    3

    2C4*7

    2C6152

    2R3 3K3

    2R53K3

    2C122032C8152

    2C25104

    2R4100

    2R8100K

    2C14203

    2R7100K

    2C7

    152

    2R1622K

    2C34

    220U

    /10V

    2C334U7/50V

    2C324U7/50V

    2C17682

    2C18 682

    2C3122U/16V

    2G1 L10.7M2G2 450B

    2R1 330

    2C29

    U1/

    50V

    2C330

    2C2332C1

    30 2L1

    3.5T

    2R2

    330

    2T3

    2T2

    2C11103

    2VD

    2V

    104

    2V1K161GR

    2TC22/7 2T1

    2VD4V149B

    2V39014C

    2V2 9018H

    RFGND1

    RFIN2

    AMLCUT3

    MIXOUT4

    VCC5

    AMIF6

    FMIF7

    GND8

    AGC9

    QUOD10

    ROUT11

    LOUT12 LPF2 13

    LPF1 14

    DETIN 15

    DETO 16

    IFREQ 17

    ST 18

    OSCO 19

    AMOSC 20

    FMOSC 21

    AMRF22

    RFVCC 23

    FMRF 24

    2N1TA2149N

    2C51153

    2C49153

    2C48153

    2C50153

    2T4

    2C52

    203

    LOOP75FM AM

    RGL

    +12V

    G

    +5V

    G

    DATA

    CLOCK

    PERIOD

    ST

    2C53 18

    2T2

    2G3

    L10

    .7M

    2V99018H

    2R29 300K

    2R30 330

    2R31 330

    2C5422

    2R32 15

    2D2 IN4148

    2C5547

    1 st Issue; March 2003AM/FM Stereo Receiver

    AAGG--779900

  • 4 52 31

    C

    B

    A

    SCHEMATIC DIAGRAM AG-790 FRONT PCB

    INSTRUCTIONS FOR SERVICE PERSONNELBEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSEDPARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.

    12345678910111213

    14

    15

    16

    17

    18

    19

    20

    21

    22

    23

    24

    25

    26

    27 28 29 30 31 32 33 34 35 36 37 38 39

    40

    41

    42

    43

    44

    45

    46

    47

    48

    49

    50

    51

    52

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

    8R2756k

    OSC

    LED1STANDBY

    LED3LOUDNESS

    LED2MUTING

    8R2560

    8R28560

    8R29560

    G1

    G2

    G3

    G4

    G5G6G7G8G9G10G11

    S1

    S2

    S3

    S4

    S5

    S6

    S7

    S8

    S9

    S10

    S11

    S12

    KEY1KEY2KEY3KEY4VDD

    VDD

    VDD

    2.1V

    2.1V

    +5V

    -24V

    VEE

    VSS

    LED1

    LED2

    LED3

    LED4

    LED5

    STB CLK IC DIN DOUT

    SW4

    BAND

    SW5

    FM MODE

    SW6

    MEMORY

    SW7

    AUX

    SW8

    TAPE M

    SW3

    UP

    SW2

    DOWN

    SW1

    TUNING MODE

    SW13

    LOUDNESS

    SW11

    CD

    SW10

    PHONO

    SW9

    TUNER

    SW12

    SLEEP

    SW14

    BASS

    SW16

    BALANCE

    SW15

    TREBLE

    8D31N4148

    8D41N4148

    8D51N4148

    8D61N4148

    8D71N4148

    8R21 10K

    8R22 10K

    +5VPOW

    DGND

    0V8R110K

    8C2100U/25V

    8C3100U/35V

    8D21N4148

    8C1470U/16V

    8R26

    10K

    8R25

    10K

    8R24

    10K

    8R23

    10K

    V F D

    8C6104

    S13 S14 S15 S16

    1

    2

    3

    4

    5

    6

    7

    8

    9

    10

    11

    12

    13

    14 15

    16

    17

    18

    19

    20

    21

    22

    23

    24

    25

    26

    27

    28

    +5V

    8C410U/16V

    REMOTE

    VOLUME

    +5V

    8R2010K

    8C830

    8C730+5V

    8R19 100k

    8C5104

    8G14.433MHz

    1

    2

    3

    45

    6

    7

    8

    DATACLOCKPERIODST LED

    STBDATACK

    TAPEMUTE

    PA1

    PA2

    PA3 PA4

    PA5

    PA6

    PA7PA0

    PB0

    PB1

    PB2

    PB3

    PB4

    PB5 PB6

    PB7

    PC0

    PC1 PC2

    PC3

    PC4

    PC5VSS

    INT

    RES

    VDD

    OSC1

    OSC2

    SDA

    SCL

    24C02

    8R17 1k

    8R16 1k

    8R15 1k

    8R14 1k

    8R13 1k

    8R12 1k

    8R11 1k

    8R10 1k

    8R8 1k

    8R7 1k

    1

    2

    3

    8R3330

    8R410K

    8R510K

    37

    36

    35

    34

    33

    323130292827

    45

    44

    43

    42

    41

    40

    39

    34

    35

    38

    37

    36

    30313233

    8

    9

    6

    5

    /TAPE

    8V12SA1015

    8R1810K

    1234567

    1XP4

    8TR1

    5

    6

    7

    8

    9

    8N1

    8N2

    8N3

    8VR1

    1234

    1XP14

    123

    1XP5

    123

    1XP6

    SENSOR

    HT

    48R

    50A

    -1

    PT6311

    8D15V1

    8R312R2

    8R302R2

    8R32 3k9

    8R33100

    8C9104

    1 st Issue; March 2003AM/FM Stereo Receiver

    AAGG--779900NOTES:Parts marked with this sign are safety critical components.They must always be replaced with identical components-refer to the appropriate parts list and ensure exact replacement.

    AG-790.pdfAG-790_SCH.pdf