Sanyo FXD-780GDSS Service Manual

Full panel detachable high power fm/am stereo receiver compact disc player

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SERVICE MANUAL

REL

ATP

FM /AM CD RECEIVER

FXD-780GD 50W x 4

LO/DX

BAS-X

LOUD

Contents

SERVICE NOTES and PRECAUTIONS .................................................................................................................. 1

ELECTRICAL ADJUSTMENTS ................................................................................................................................ 4

BLOCK DIAGRAM ..................................................................................................................................................11

IC/TRANSISTOR LEAD IDENTIFICATION ............................................................................................................ 13

CD MECHANISM EXPLODED VIEW .................................................................................................................... 15

CABINET & CHASSIS EXPLODED VIEW ............................................................................................................. 16

PARTS LIST - CABINET, CHASSIS AND ACCESSORIES ................................................................................... 17

PARTS LIST - CD MECHANISM ........................................................................................................................... 19

PARTS LIST-MAIN ................................................................................................................................................. 21

PARTS LIST-DISP ................................................................................................................................................. 30

PARTS LIST-RF33 ................................................................................................................................................. 32

SCHEMATIC DIAGRAM ........................................................................................................................................ 38

CIRCUIT BOARD DIAGRAM ................................................................................................................................. 44

Full Panel Detachable

High Power

FM/AM Stereo Receiver

Compact Disc Player

VOL

TUN

TRK

SHF

RPT

MUTE

AUDIO

POWER

FXD-780GD

FILE NO.

FXD-780GD (SS)

114782850

FXD-780GD (BK.SS)

114782855

FXD-780RDS (XE)

114782851

FXD-780RDS

REFERENCE No. SM-7900010

Table of Contents

Summary of Contents for Sanyo FXD-780GDSS

Page 1: Table Of Contents
FILE NO. FXD-780GD (SS) Full Panel Detachable SERVICE MANUAL 114782850 High Power FXD-780GD (BK.SS) FM/AM Stereo Receiver 114782855 Compact Disc Player FXD-780RDS (XE) 114782851 FM /AM CD RECEIVER FXD-780GD 50W x 4 LO/DX MUTE BAS-X LOUD AUDIO POWER FXD-780GD FXD-780RDS Contents SERVICE NOTES and PRECAUTIONS ........................
Page 2: Specifications
Specifications FM TUNER Tuning Range ................87.5 - 107.9 MHz. (200 KHz. step) 87.5 - 108.0 MHz. (50 KHz. step) Sensitivity ..................1.5 µV Separation ................... 30 dB Signal-to-Noise Ratio ..............65 dB (stereo), 70 dB (mono) AM TUNER Tuning Range ................530 - 1,710 KHz. (10 KHz. step) 531 - 1,602 KHz.
Page 3: Service Notes And Precautions
SERVICE NOTES AND PRECAUTIONS SERVICE NOTES INSTALLATION PROCEDURE 1. Make sure that the power lead is connected properly to 1. To prevent a short circuit, remove the key from the igni- power source, otherwise damage to radio may result. If a tion and disconnect the battery.
Page 4 SERVICE NOTES AND PRECAUTIONS 3. Each and every pickup is already individually adjusted to LASER BEAM SAFETY PRECAUTIONS a high degree of precision, and for that reason the adjust- NOTES FOR TRANSPORT AND STORAGE ment point and installation screws should be absolutely 1.
Page 5 SERVICE NOTE AND PRECAUTIONS STATIC ELECTRICITY The CD pickup might suffer destruction by static electricity during spare-parts maintenance or replacement, although it is stable when connected to the circuit in the CD unit. The destruction might be caused because the laser diode terminal will be electri- cally open.
Page 6: Electrical Adjustments
ELECTRICAL ADJUSTMENTS ALIGNMENT OF FM RF & IF SECTION Set the radio for FM reception. FM signal generator should be coupled with antenna receptacle, through dummy. VTVM DISTORTION METER AC VOLTMETER DUMMY FM SG DUMMY LOAD & & ANTENNA SW BOX STEREO SG *1 Refer to “DUMMY BOX SCHEMATIC”...
Page 7 ELECTRICAL ADJUSTMENTS ALIGNMENT OF AM RF & lF SECTION Set the radio for AM reception. AM signal generator should be coupled with antenna receptacle through dummy. Set VOLUME control to maximum and TONE to center. Attenuate signal generator output to maintain 0.5 watts (1.4 volts across 4 ohms load) on AC voltmeter.
Page 8 ELECTRICAL ADJUSTMENTS ALIGNMENT OF FM MULTIPLEX SECTION FM signal generator should be modulated by FM stereo signal generator. Modulation level: 19kHz 10% (7.5kHz dev) 1000Hz 30% (22.5kHz dev) FM signal generator output level: 66dBµ (1mV) Frequency: 98.1 MHz. Set the radio for FM reception and tune to signal. Adjust volume control to provide 0.5 watt on AC VTVM and tone to center. Set L/R balance control for equal output at each channel.
Page 9 ELECTRICAL ADJUSTMENTS FOR FXD-780GD SETTING UP TEST MODE AT STEP 4 FOR AM & STEP 7 FOR FM Press the e POWER button to turn the power off. Next, use the following procedure with the front panel switches to set the mode to the test mode shown in Step 4 for AM and Step 7 for FM. FM /AM CD RECEIVER FXD-780GD 50W x 4 LO/DX...
Page 10 ELECTRICAL ADJUSTMENTS FOR FXD-780RDS Fig. 8 TEST MODE CHART (A) Enter the Test Mode (B) Enter the FM Mode (D) Receiving 98.1 MHz (F) Enter the AM Mode (C) FM DX Mode (E) FM Local Mode (G) AM DX Mode Fig.
Page 11 (H) Receiving 999 kHz (K) The Moment TP ON (N) Change the Display while AF ON AM Local Mode (L) Change the Display while TP ON (O) The Moment 107.1 MHz Receiving (J) S. Meter Adj. Mode (M) The Moment AF ON (P) Change the Display while 107.1 MHz Receiving Fig.
Page 12 ELECTRICAL ADJUSTMENTS DUMMY BOX SCHEMATIC b AM DUMMY ANTENNA PLUG TO FIT ANTENNA CO-AX CABLE RECEPTACLE OF UNIT 30Ω 15PF AM S.G. (50Ω) 60PF METAL SHIELD CAN Fig. 11-1 b FM DUMMY ANTENNA PLUG TO FIT ANTENNA CO-AX CABLE RECEPTACLE OF UNIT 25Ω...
Page 13: Block Diagram
BLOCK DIAGRAM FOR FXD-780GD — 11 —...
Page 14 BLOCK DIAGRAM FOR FXD-780RDS — 12 —...
Page 15: Ic/Transistor Lead Identification
IC/TRANSISTOR LEAD IDENTIFICATION FOR FXD-780GD TOP VIEW or SIDE VIEW IC401 : LC75421M-CT IC351 : CXA1821M-CT IC381 : LC6556-CT IC901 : LC75823W IC101 : LA178IM IC501 : LA4743B IC301 : CXD2587Q IC701 : UPD178024GC Q100: 3SK263T-5 Q111: FC18T-F, G E C B E C B Q601: 2SB1326T-R Q612: KTC3199T-Y, GR...
Page 16 IC/TRANSISTOR LEAD IDENTIFICATION FOR FXD-780RDS TOP VIEW or SIDE VIEW IC401 : LC75421M-CT IC351 : CXA1821M-CT IC381 : LC6556-CT IC251 : LC72723M-CT IC901 : LC75823W IC101 : LA178IM IC501 : LA4743B IC301 : CXD2587Q IC701 : UPD178078GF Q100: 3SK263T Q111: FC18T-F, G E C B E C B Q601: 2SB1326T-R...
Page 17: Cd Mechanism Exploded View
CD MECHANISM EXPLODED VIEW (MECHANISM #5BB002) 145 112 NOTE: Parts from the deck mechanism exploded view and parts list are only for technical reference. These parts may or may not be individually available. — 15 —...
Page 18: Cabinet & Chassis Exploded View
CABINET & CHASSIS EXPLODED VIEW ET201 CABLE ASS'Y (E-1) (For FXD-780GD/SS, BK.SS) TK26917170 (For FXD-780RDS/XE) TK26917002 BRACKET(MOUNT) TK21176533 BKT(REL) SUPPORT BKT TK21176780 TK2102013 SCREW KIT(6PCS) TK29X12210 — 16 —...
Page 19: Parts List - Cabinet, Chassis And Accessories
BL ASSY RF33SS (FXD-780GD/SS, BKSS) TK35V48C0 MAIN CIRCUIT BOARD (FXD-780RDS/XE) TK35V55A0 DISPLAY CIRCUIT BOARD (FXD-780RDS/XE) ET201 TK37314B0 BL ASSY RF33RN (FXD-780RDS/XE) TK22331901 FPASSY (C) SANYO (FXD-780GD/SS, BK.SS) TK22331921 FPASSY (C) SANYO (FXD-780RDS/XE) TK2952265A DPBS-2.6X5SSA TK2952266A DPBS-2.6X6SSA TK2952266C DPBS-2.6X6SSC TK2952268A DPBS-2.6X8SSA TK295226BA DPBS-2.6X12SSA...
Page 20 ACCESSORY Ref.No. PartsNo. Description — TK2102013 SUPPORT BKT — TK21176533 BKT (MOUNT) — TK21176780 BKT (REL) — TK22720890 C.CASE ASSY (FXD-780GD/SS, BK.SS) — TK22720891 C.CASE ASSY (FXD-780RDS/XE) — TK26917170 CABLE ASSY (E-1) (FXD-780GD/SS, BK.SS) — TK26917002 CABLE ASSY (P-54C) (FXD-780RDS/XE) —...
Page 21: Parts List-Cd Mechanism
PARTS LIST-CD MECHANISM Ref. No. Part No. Description TKX10071011 CHASSIS ASSY (TK1) TKX10071005 PICK BASE ASSY TK110051003 CHUCK ARM TK110051004 TOP COVER TK110051006 L.M BRACKET TK110051007 CLAMPER PLATE TK110051008 R ARM TK110051009 RELEASE LEVER TK110051018 SET START ARM TK110071003 SPG GUIDE TK110071004 PICK GUIDE TK110071008...
Page 22 PARTS LIST-CD MECHANISM Ref. No. Part No. Description TK110054010 UP LEVER SP TK110074001 FEED SP TK110074002 CHUCK ARM SP (L) TK110074003 P.B. LOCK SP TK110074004 CHUCK ARM SP (R) TK110074014 STARTSP (B) TK110055003 XP SCREW TK110055004 ARM SHEET TK110055005 CHUCK SHEET TK110075001 DISC SHEET TK110075005...
Page 23: Parts List-Main
PARTS LIST MAIN CIRCUIT BOARD FOR FXD-780GD/SS, BK.SS Ref.No. PartsNo. Description AJ201 TK196510300 ANT JACK ASSY C201, C317 TK157A1020J CAPACITOR, CHIP, 1000PF 50V C203, C311 TK157A4730J CAPACITOR, CHIP, 0.047UF 16V C204 TK15715R00J CAPACITOR, CHIP, 5PF 50V C205, C206 TK157A1830J CAPACITOR, CHIP, 0.018UF 25V C207 TK157A1040E CAPACITOR, CHIP, 0.1UF 25V...
Page 24 MAIN CIRCUIT BOARD FOR FXD-780GD/SS, BK.SS Ref.No. PartsNo. Description C512, C601 TK157C1040J CAPACITOR, CHIP, 0.1U C513 TK15C3338K0 CE-RE3-3300M16 C515, J501 TK165300006 RESISTOR, CHIP, 0OHM 1/16W C551 TK15091060J CI-1608CH101J100-CT C581 TK15C6474CR CE-RC2-0.47M50-T58 C582 TK157B1040E CAPACITOR, CHIP, 0.1UF 25V C611, C633 TK15C2107CR CE-RC2-100M10-T58 C631 TK15C3107CR...
Page 25 MAIN CIRCUIT BOARD FOR FXD-780GD/SS, BK.SS Ref.No. PartsNo. Description P502 TK26563690 CONN YKC21-4800 P701 TK1981312AC POST-TMD-L12X-B1 Q201, Q202 TK120020703 TRANSISTOR, DTA124EKAT Q351 TK122081533 TRANSISTOR, 2SB815T-B6, B7 Q542, Q543 TK120020403 TRANSISTOR, DTC143TKAT Q583, Q641 TK120020703 TRANSISTOR, DTA124EKAT Q601, Q631 TK122132611 TRANSISTOR, 2SB1326T-Q, R Q602, Q632 TK120015503 TRANSISTOR, DTC124EKAT...
Page 26 MAIN CIRCUIT BOARD FOR FXD-780GD/SS, BK.SS Ref.No. PartsNo. Description R395, R396 TK16532R206 RESISTOR, CHIP, 2.20OHM 1/16W R419, R422 TK165339206 RESISTOR, CHIP, 3.9KOHM 1/16W R421, R494 TK165312306 RESISTOR, CHIP, 12KOHM 1/16W R485, R491 TK165347306 RESISTOR, CHIP, 47KOHM 1/16W R495 TK165312306 RESISTOR, CHIP, 12KOHM 1/16W R501, R504 TK165310306 RESISTOR, CHIP, 10KOHM 1/16W...
Page 27 MAIN CIRCUIT BOARD FOR FXD-780RDS/XE Ref.No. PartsNo. Description AJ201 TK196510300 ANT JACK ASSY C201, C317 TK157A1020J CAPACITOR, CHIP, 1000PF 50V C202, C207 TK157A1030J CAPACITOR, CHIP, 0.01UF 50V C204 TK15715R00J CAPACITOR, CHIP, 5PF 50V C205, C206 TK157A1530J CAPACITOR, CHIP, 0.015UF 25V C208, C256 TK15713300J CAPACITOR, CHIP, 33PF 50V...
Page 28 MAIN CIRCUIT BOARD FOR FXD-780RDS/XE Ref.No. PartsNo. Description C501, C502 TK15C6474CR CE-RC2-0.47M50-T58 C503, C504 TK15C6474CR CE-RC2-0.47M50-T58 C505, C508 TK15C6105HR CE-RC3-1M50-T58 C507 TK15C6105CR CE-RC2-1M50-T58 C509 TK15C3476HR CE-RC3-47M16-T58 C510 TK15C3226CR CE-RC2-22M16-T58 C511 TK15C6224HR CE-RC3-0.22M50-T58 C512, C641 TK157C1040J CAPACITOR, CHIP, 0.1U C513 TK15C3338K0 CE-RE3-3300M16 C515, L702 TK165300006...
Page 29 MAIN CIRCUIT BOARD FOR FXD-780RDS/XE Ref.No. PartsNo. Description L352 TK198300101 JUMPER 5MM (INSERT) L601 TK174301800 TRANSFORMER, TT-OL-5047-R2 P301 TK1981353AQ POST-TKC-W26P-B1 P501 TK26563210 CONNECTOR P502 TK26563690 CONN YKC21-4800 P701 TK1981312AC POST-TMD-L12X-B1 Q201, Q202 TK120020703 TRANSISTOR, DTA124EKAT Q351 TK122081533 TRANSISTOR, 2SB815T-B6, B7 Q542, Q543 TK120020403 TRANSISTOR, DTC143TKAT...
Page 30 MAIN CIRCUIT BOARD FOR FXD-780RDS/XE Ref.No. PartsNo. Description R356 TK165391006 RESISTOR, CHIP, 91OHM 1/16W R357, R418 TK165312306 RESISTOR, CHIP, 12KOHM 1/16W R360 TK165324306 RESISTOR, CHIP, 24.0KOHM 1/16W R361 TK165339306 RESISTOR, CHIP, 39KOHM 1/16W R362 TK165318206 RESISTOR, CHIP, 1.8KOHM 1/16W R381, R382 TK165347206 RESISTOR, CHIP, 4.7KOHM 1/16W R383, R384...
Page 31 MAIN CIRCUIT BOARD FOR FXD-780RDS/XE Ref.No. PartsNo. Description R736, R737 TK165310406 RESISTOR, CHIP, 100KOHM 1/16W R738, R746 TK165310406 RESISTOR, CHIP, 100KOHM 1/16W R741, R742 TK165310306 RESISTOR, CHIP, 10KOHM 1/16W R745 TK165300006 RESISTOR, CHIP, 0OHM 1/16W R752, R766 TK165310406 RESISTOR, CHIP, 100KOHM 1/16W R761 TK165310306 RESISTOR, CHIP, 10KOHM 1/16W...
Page 32: Parts List-Disp
DISPLAY CIRCUIT BOARD FOR FXD-780GD/SS/BK.SS, FXD-780RDS/XE : FXD-780GD : FXD-780RDS Ref.No. PartsNo. Description C901 TK157A1020J CAPACITOR, CHIP, 1000PF 50V C902 TK157C1040J CAPACITOR, CHIP, 0.1U D901 TK134028703 DIODE, ZENER, HZM6.2ZFA D901 TK134033503 DIODE, ZENER, FTZ6.8E D902 TK134030123 DIODE, ZENER, BZX84-b5V1 D911, D912 TK141029913 LED, MG02-1206LGC-DE D913, D914...
Page 33 DISPLAY CIRCUIT BOARD FOR FXD-780GD/SS/BK.SS, FXD-780RDS/XE : FXD-780GD : FXD-780RDS Ref.No. PartsNo. Description SW917, SW918 TK23A1127 SWITCH (SKQCAC-260G) TK182524221 PCB DISP TK182524320 PCB DISP TK21177300 BKT (LCD) TK21177301 BKT (LCD) TK22420551 HOLDER (LED) E-1.5 TK22421210 HOLDER ASSY (LCD) TK25380620 INTER CONNECTOR E-1.5 TK28061570 INSULATOR 3.5X14 TK28073670...
Page 34: Parts List-Rf33
RF33SS CIRCUIT BOARD FOR FXD-780GD/SS, BK.SS Ref.No. PartsNo. Description C100, C103 TK15712700J CAPACITOR, CHIP, 27PF 50V C101, C171 TK15711200J CAPACITOR, CHIP, 12PF 50V C102, C104 TK157A1030J CAPACITOR, CHIP, 0.01UF 50V C105 TK15775R00J CAPACITOR, CHIP, 5P C106 TK15711500J CAPACITOR, CHIP, 15PF 50V C107, C122 TK157A2230J CAPACITOR, CHIP, 0.022UF 25V...
Page 35 RF33SS CIRCUIT BOARD FOR FXD-780GD/SS, BK.SS Ref.No. PartsNo. Description C186, C189 TK157A1020J CAPACITOR, CHIP, 1000PF 50V C190 TK15711000J CAPACITOR, CHIP, 10PF 50V D101 TK13500390B DIODE, 1SV234T-TB D102, D103 TK135006803 DIODE, SVC220T D104, D108 TK135006803 DIODE, SVC220T D105, D107 TK13200710B DIODE, DA204KT146 D109 TK131002903 DIODE, 1SS355T...
Page 36 RF33SS CIRCUIT BOARD FOR FXD-780GD/SS, BK.SS Ref.No. PartsNo. Description R128 TK165310306 RESISTOR, CHIP, 10KOHM 1/16W R129 TK169162210 RESISTOR, SEMI-FIXED, KVSF637A-473B R130, R131 TK165315306 RESISTOR, CHIP, 15KOHM 1/16W R132 TK165382106 RESISTOR, CHIP, 820OHM 1/16W R134 TK165318206 RESISTOR, CHIP, 1.8KOHM 1/16W R136 TK165356206 RESISTOR, CHIP, 5.6KOHM 1/16W R138...
Page 37 RF33RN CIRCUIT BOARD FOR FXD-780RDS/XE : FXD-770GD : FXD-775RDS Ref.No. PartsNo. Description C101, C171 TK15711200J CAPACITOR, CHIP, 12PF 50V C100, C103 TK15712700J CAPACITOR, CHIP, 27PF 50V C102, C104 TK157A1030J CAPACITOR, CHIP, 0.01UF 50V C105 TK15775R00J CAPACITOR, CHIP, 5P C106 TK15711500J CAPACITOR, CHIP, 15PF 50V C110, C116 TK157A1030J...
Page 38 RF33RN CIRCUIT BOARD FOR FXD-780RDS/XE : FXD-770GD : FXD-775RDS Ref.No. PartsNo. Description C190 TK15711000J CAPACITOR, CHIP, 10PF 50V D101 TK13500390B DIODE, 1SV234T-TB D102, D103 TK135006803 DIODE, SVC220T D104, D108 TK135006803 DIODE, SVC220T D105, D107 TK13200710B DIODE, DA204KT146 D109, D110 TK131002903 DIODE, 1SS355T F101 TK175206130...
Page 39 RF33RN CIRCUIT BOARD FOR FXD-780RDS/XE : FXD-770GD : FXD-775RDS Ref.No. PartsNo. Description R125 TK165333106 RESISTOR, CHIP, 330OHM 1/16W R127 TK165322406 RESISTOR, CHIP, 220KOHM 1/16W R128 TK165318306 RESISTOR, CHIP, 18KOHM 1/16W R129 TK169162210 RESISTOR, SEMI-FIXED, KVSF637A-473B R130, R131 TK165315306 RESISTOR, CHIP, 15KOHM 1/16W R132 TK165382106 RESISTOR, CHIP, 820OHM 1/16W...
Page 40: Schematic Diagram
SCHEMATIC DIAGRAM - MAIN for FXD-780GD/SS, BK.SS The Base (100Hz) and Treble (10kHz) of BUSUTO is electrically set as ±10dB. The contents of initial setting P. SEL : 0=ACC_ON (linkage), 1=POWER_ON (linkage) CUSTOMER : 0=BP, 1=SANYO To DISPLAY PCB FXD-780GD/RDS — 38 —...
Page 41 SCHEMATIC DIAGRAM - MAIN for FXD-780RDS/XE The Base (100Hz) and Treble (10kHz) of BUSUTO is electrically set as ±10dB. The contents of initial setting P. SEL : 0=ACC_ON (linkage), 1=POWER_ON (linkage) CUSTOMER : 0=BP, 1=SANYO FXD-780GD/RDS To DISPLAY PCB — 39 —...
Page 42 SCHEMATIC DIAGRAM - DISPLAY for FXD-780GD/SS, BK.SS FXD-780GD/RDS — 40 —...
Page 43 SCHEMATIC DIAGRAM - DISPLAY for FXD-780RDS/XE FXD-780GD/RDS — 41 —...
Page 44 SCHEMATIC DIAGRAM - RF33SS for FXD-780GD/SS, BK.SS ( ) : No mark is AM 98.1MHz Input level : 6dBµ No modulation Vol : 1 999kHz Input level : 74Bµ No modulation Vol : 1 FXD-780GD/RDS — 42 —...
Page 45 SCHEMATIC DIAGRAM - RF33RN for FXD-780RDS/XE ( ) : No mark is AM 98.1MHz Input level : 6dBµ No modulation Vol : 1 FXD-780GD/RDS 999kHz Input level : 74Bµ No modulation Vol : 1 — 43 —...
Page 46: Circuit Board Diagram
CIRCUIT BOARD DIAGRAM - MAIN for FXD-780GD/SS, BK.SS (FM) (AM) FXD-780GD/RDS — 44 —...
Page 47 CIRCUIT BOARD DIAGRAM - MAIN for FXD-780RDS/XE (FM) (AM) FXD-780GD/RDS — 45 —...
Page 48 CIRCUIT BOARD DIAGRAM - DISPLAY for FXD-780GD/SS, BK.SS CIRCUIT BOARD DIAGRAM - RF33SS for FXD-780GD/SS, BK.SS Generator & Radio Dial Setting 98.1MHz (JPN 83MHz) 1kHz, 75kHz dev — SG att : 66dBµ (1mV) CIRCUIT BOARD DIAGRAM - DISPLAY for FXD-780RDS/XE CIRCUIT BOARD DIAGRAM - RF33RN for FXD-780RDS/XE Generator &...
Page 50 FXR-725GD FXR-730GD FXD-780GD FXD-780RDS No. 289A3060 Printed in Japan Issue date 05-02...

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Sanyo FXD-780GDSS Service Manual

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