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Aiwa CDC-R927M Service Manual
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Aiwa CDC-R927M Service Manual

Aiwa CDC-R927M Service Manual

Stereo car cd receiver basic cd mechanism : bzg-3 cnf
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CDC-R927M
YZ(ST)
SERVICE MANUAL
STEREO CAR CD RECEIVER
BASIC CD MECHANISM : BZG-3 CNF
S/M Code No. 09-026-458-9N1

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Summary of Contents for Aiwa CDC-R927M

  • Page 1 CDC-R927M YZ(ST) SERVICE MANUAL STEREO CAR CD RECEIVER BASIC CD MECHANISM : BZG-3 CNF S/M Code No. 09-026-458-9N1...
  • Page 2 SPECIFICATION -1/1 RADIO SECTION (FM) Frequency Range: 87.5 MHz - 108 MHz (50-KHz steps) Usable Sensitivity: 12.7 dBf 50 dB Quieting Sensitivity: 17.2 dBf IF Rejection: 100 dB Frequency Response: 30 Hz - 15,000 Hz S/N Ratio: 67 dB Stereo Separation: 35 dB at 1 kHz Alternate Channel Selectivity: 98 dB...
  • Page 3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING -1/1 CAUTION This set employs laser. Therefore, be sure to follow carefully the instructions below when servicing. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardousradiation exposure. WARNING! ATTENTION WHEN SERVICING, DO NOT APPROACH THE LASER EXIT WITH THE...
  • Page 4 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF O AS1001 8C-KC2-901-010 IB,YZ(9L)F R927M O AS1002...
  • Page 5 DISASSEMBLY INSTRUCTION - 1/2 DISASSMBLY PROCEDURE Notes 1) Remove top and bottom cover. 2) Remove CD mechanism. 3) Remove FFC. 4) Remove wire solder. 5) Remove the screw of MAIN BOARD. 6) Remove the connector of the motor. 7) Remove CABI BASE AROUND and remove the screw of FRAME SUB assy right and left. 8) Move FRONT PANEL assy.
  • Page 6 DISASSEMBLY INSTRUCTION - 1/2 9) Remove MOTOR assy. Reassemble MOTOR assy at the position that is arranged with hole of GEAR CAM and hole of FRAME SUB assy like the figure) 10) Remove FRONT assy. 11) Remove Panel SW assy. (Extend FRAME SUB assy lightly and remove it at front side) Put the tip of a lever Assy gear at between the marks of GEAR CAM and reassemble FRONT assy.

  • Page 7: Electrical Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF 0201 87-010-552-040 CAP,E 22-16 M 5L SRE 0202 87-012-286-080 C-CAP,U 0.01-25 K B GRM 0203 87-A10-189-040 CAP,E 220-10 M 5L 0221 87-012-286-080 C-CAP,U 0.01-25 K B GRM...
  • Page 8 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF 0214 88-108-000-080 C-JUMPER,U 0215 88-108-154-080 C-RES,U 150K-1/16W J 0221 88-108-102-080 C-RES,U 1K-1/16W J...
  • Page 9 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF FRONT 0605 88-108-333-080 C-RES,U 33K-1/16W J FRONT...
  • Page 10 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF MAIN 0110 87-012-281-080 C-CAP,U 3900P-50 K B GRM MAIN 0111 87-012-286-080 C-CAP,U 0.01-25 K B GRM...
  • Page 11 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF MAIN 0510 87-010-553-040 CAP,E 47-16 M 5L SRE MAIN 0511 87-012-368-080 C-CAP,S 0.1-50 Z F GRM...
  • Page 12 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF MAIN 0822 87-017-367-040 C-DIODE,DAP202U MAIN 0831 87-A40-624-080 ZENER,MTZJ10A...
  • Page 13 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF MAIN 0123 88-108-123-080 C-RES,U 12K-1/16W J MAIN...
  • Page 14 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF MAIN 0703 88-108-472-080 C-RES,U 4.7K-1/16W J MAIN 0704 88-108-472-080 C-RES,U 4.7K-1/16W J...
  • Page 15 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF MAIN 0946 88-108-104-080 C-RES,U 100K-1/16W J MAIN...

  • Page 16: Chip Resistor Part Code

    ELECTRICAL PARTS LIST - 10/10 • Regarding connectors, they are not stocked as they are not the initial order items. The connectors are available after they are supplied from connector manufacturers upon the order is received. CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code...
  • Page 17 TRANSISTOR ILLUSTRATION -1/1 E C B B C E 2SB1326 2SB1375 2SA1037 2SD1858 2SD2012 2SA1576 2SC2412 2SC4081 DTA114YUA DTB123YK DTC114TKA DTC114TUA DTC114YUA -17-...
  • Page 18 BLOCK DIAGRAM - 1/1 (OVERALL) MAIN C.B TU101 J401 IC401 REAR IC151 Q101 SAA6579T CNA802 IC501 CNA801 CD C.B IC901 J751 SENSOR C.B CON701 CON702 FRONT C.B CON601 CON603 FFC601 LCD601 IC601 LCD,CKC-4 J601 LC75817W AUX IN SW601-604,620 -8720 SW606-618 SW621 JACK C.B AUDIO...
  • Page 19 SCHEMATIC DIAGRAM - 1/3 (MAIN/SENSOR/LED SECTION) MAIN C.B (ANTENNA) Q108 SAA6579T LO/DX SW 4.332MHz AM/FM OSC BU4066BCF IF REQ/OUT 100K VOLTAGE ADJ. 2SD1858TV2 180K SENSOR C.B FFC671 CDS IN U-COM LM SW LED731 SLR-342MG T31 GREEN (ILLUMINATION) CNA802 F802 FFC731 1/25(S) 0.5A LED C.B...
  • Page 20 WIRING - 1/3 (MAIN C.B/SENSOR C.B/LED C.B ) MAIN C.B J401 CNA802 CNA801 REAR (WHITE) (BLACK) ANT101 TO SPEAKER TO POWER SUPPLY (ANTENNA) C508 C521 C801 TO CD CHANGER J401 C531 R531 C505 C520 IC501 C525 C457 R542 J751 ANT101 C458 L102 R758...
  • Page 21 SCHEMATIC DIAGRAM - 2/3 (FRONT/KEY/JACK SECTION) FRONT C.B 3.36 3.36 2SC2412KR 3.36 3.36 3.36 3.36 3.36 3.36 2SC2412KR 3.36 3.36 JACK C.B 3.36 3.33 AUX IN 3.36 3.32 REMOTE SENSOR 3.36 FFC601 3.33 3.36 3.33 3.36 3.33 3.35 0.018 3.35 3.35 3.35 LC75817W-8720...
  • Page 22 WIRING - 2/3 (FRONT C.B/KEY C.B/JACK C.B) JACK C.B KEY C.B SW617 SW616 SW618 SW615 SW614 SW613 SW612 SW611 SW610 SW607 SW608 SW606 SW609 (Top View) (Top View) DISP BAND /A.ME /RNDM /REP1 /REP /INT /DISC /DISC /MUTE J601 AUX IN LED616 LED617 LED618...
  • Page 23 SCHEMATIC DIAGRAM - 3/3 (CD SECTION) CD C.B SW C.B 16.9344MHz TC94A09F-301 -23-...
  • Page 24 WIRING - 3/3 (CD C.B/SW C.B) (RST SW) CD C.B CD C.B (Top View) (Bottom View) SW C.B Q201 R205 R206 C201 IC201 C203 C202 C222 R204 R212 R203 R214 R231 R202 C233 R213 R201 R232 R235 R233 C235 L221 C232 IC221 R222...
  • Page 25 VOLTAGE CHART -1/9 IC201 LA6557H PIN NO. PIN NAME TUNER CD-CHANGER VCC2 8.13 0.62 0.64 0.65 VO5- 0.26 VO5+ 0.26 VO4+ 3.72 VO4- 3.72 VO3+ 3.67 VO3- 3.84 VO2+ 4.05 VO2- 3.45 VO1+ 3.64 VO1- 4.13 VCC1 8.19 0.62 0.63 0.64 VIN1 2.12...
  • Page 26 VOLTAGE CHART -2/9 IC241 TC94A09F PIN NO. PIN NAME TUNER CD-CHANGER S1 (OT5) S2 (OT6) S3 (OT7) S4 (OT8) S5 (OT9) S6 (OT10) S7 (OT11) S8 (OT12) S9 (OT13) S10(OT14/ZDET) S11(OT15/CLCK) S12(OT16/DATA) S13(OT17/SFSY) S14(DT18/LRCK) P8-0(S15/BCK) 0.28 P8-1(S16/AOUT) P8-2(S17/MBOV) 0.27 P8-3(S18/IPF) MVDD1 5.06 MVSS1...
  • Page 27 VOLTAGE CHART -3/9 IC241 TC94A09F PIN NO. PIN NAME TUNER CD-CHANGER 2.14 TEZI 2.12 2.12 2.15 VREF 2.13 RFGC 0.99 TEBC 1.93 2.08 2.16 2VREF 4.23 2.56 VDD2 5.07 VSS2 XVSS 2.34 2.65 XVDD 5.09 DVSR 2.57 DVRR 2.44 DVDD 4.87 DVRL 2.44...
  • Page 28 VOLTAGE CHART -4/9 IC401 LA2657M PIN NO. PIN NAME TUNER CD-CHANGER AUX(L) 4.11 4.13 4.12 CDC(L) 4.12 4.13 4.12 TUN(L) 4.12 4.13 4.12 SD(L) 4.12 4.13 4.12 VREF 4.14 4.15 4.13 4.12 CD(R) 4.13 4.13 4.12 TUNE(R) 4.13 4.13 4.12 CH(R) 4.13 4.13...
  • Page 29 VOLTAGE CHART -5/9 IC402 BU4066BC PIN NO. PIN NAME TUNER CD-CHANGER I/O 1 4.48 4.44 4.47 O/I 1 4.48 4.41 4.44 4.47 O/I 2 4.48 4.41 4.45 4.47 I/O 2 4.48 4.41 4.45 4.47 8.63/0 8.64/0 8.7/0 8.74/0 8.63/0 8.64/0 8.7/0 8.74/0 I/O 3...
  • Page 30 VOLTAGE CHART -6/9 IC901 UPD178078GF-550-3BA PIN NO. PIN NAME TUNER CD-CHANGER BATT IN 4.12 4.11 NC (DFP IN) 5.05 5.09 5.09 5.06 LCD DI 5.07 5.07 LCD DO DATA DATA DATA DATA LCD CLO DATA DATA DATA DATA LCD CE DATA DATA DATA...
  • Page 31 VOLTAGE CHART -7/9 IC901 UPD178078GF-550-3BA PIN NO. PIN NAME TUNER CD-CHANGER RDS MODE POWER MUTE 4.05 4.06 4.06 4.03 (NC) (CONT2) (NC) (CONT1) MUTE 0.69 0.69 0.14 (NC) (RXDO) (NC) (TXDO) MI-1 MI-2 MI-3 MO-1 MO-2 MO-3 MO-4 JACK IN 0/4.89 0/4.89 0/4.89...
  • Page 32 VOLTAGE CHART -8/9 TRANSISTOR CD-CHANGER 0.02 Q101 7.55 7.54 0.28 7.49 7.54 DTC114TUA 8.89 8.37 8.84 8.88 Q102 0.35 0.21 9.01 0.15 0.24 2SA1576A(R) 9.12 9.08 9.08 9.07 9.08 8.94 0.78 8.89 8.89 Q103 9.13 9.08 9.09 9.07 9.08 2SC4081(R) 8.24 8.19 1.02...
  • Page 33 VOLTAGE CHART -9/9 TRANSISTOR CD-CHANGER 9.77 9.78 9.78 9.77 Q813 14.25 14.35 14.4 14.31 14.16 2SD2012 9.15 9.11 9.11 9.11 6.37 6.36 6.36 6.36 6.36 Q821 12.59 12.57 12.64 12.52 12.44 2SD1858 5.79 5.78 5.79 5.79 9.05 0.62 0.65 0.75 0.78 Q831 14.24...
  • Page 34 IC BLOCK DIAGRAM -1/3 IC, BU4066BCF IC, LA4743J MUTE ON TIME IC, BA6417F STBY PRE GND -34-...

  • Page 35: Ic Block Diagram -2

    IC BLOCK DIAGRAM -2/3 IC, SAA6579T XOUT DVDD QUAL SCOUT DATA VREF AGND MODE TEST DGND IC, LA6557H Thermal shutdown CH3,4,5 VCC2 POWER Input VO5— VO5+ S-GND MUTE is as follows : High : Output ON VO4+ Low : Output OFF MUTE MUTE VO4—...
  • Page 36 IC BLOCK DIAGRAM -3/3 IC, LA2657H LSELO LBASS1 L FAD IN FLOUT LIN LTRE LBASS2 LOUT RLOUT AUX(L) FADER TONE INTERFACE S-BASS CH(L) TUNE(L) RROUT FADER CD(L) FROUT VREF Vref BBE IN(L) CD(R) CBPL TUNE(R) CH(R) HPOL AUX(R) CLPL RSELO LPOL MIXL RTRE...
  • Page 37 IC DESCRIPTION -1/3 (µPD178078GF-567-3BA)-1/3 Pin Name Pin No. Description BATT IN BATT ON/OFF input DFP IN Detects whether DFP (front panel) is provided or not. LCD DI LCD DRV data input LCD DO Open when not used. LCD DRV data output. LCD CLO LCD DRV clock output.
  • Page 38 IC DESCRIPTION -1/3 (µPD178078GF-567-3BA)-2/3 Pin Name Description Pin No. IF REQ Output to request IF count signal. Ground AM IF AM IF count signal input FM IF FM IF count signal input Power supply for PLL FM OSC FM local oscillation input AM OSC AM local oscillation input Ground for PLL...
  • Page 39 IC DESCRIPTION -1/3 (µPD178078GF-567-3BA)-3/3 Pin No. Pin Name Description AUX IN AUX JACK SW detect input. CDS SREQ CDS SREQ output. RE1 IN Rotary encoder input 1 RE2 IN Rotary encoder input 2 Ground LM SW FEED MOTER GAIN SW output PANCON1 Panel open/close control output PANCON2...
  • Page 40 IC DESCRIPTION -2/3 (LC75817W-8720)-1/3 Pin Name Pin No. Description Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin.
  • Page 41 IC DESCRIPTION -2/3 (LC75817W-8720)-2/3 Pin Name Pin No. Description Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin. Segment driver output pin.
  • Page 42 IC DESCRIPTION -2/3 (LC75817W-8720)-3/3 Pin Name Pin No. Description Key scan input pin. Change illmination(BLUE) Change illmination(RED) Dimmer control pin. LOAD/EJECT GAIN Switching Output.. VLCD LCD driver power supply pin. VLCD0 LCD driver bias 4/4 voltage (H-level) power pin. VKCD1 LCD driver bias 3/4 voltage (Intermediate level) power pin.
  • Page 43 IC DESCRIPTION -3/3 (TC94A09F-301)-1/3 Pin Name Pin No. Description NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) NC (Open) P8-0 NC (Open) P8-1 NC (Open) P8-2...
  • Page 44 IC DESCRIPTION -3/3 (TC94A09F-301)-2/3 Pin Name Pin No. Description OT20 NC(open) OT21 NC(open) OT22 NC(open) DOUT NC(open) SBSY NC(open) SBOK NC(open) VDDÇP Vss 1 P2VREF FOR PLL 2 VREF EFM to PLCK difference error signal output TMAX TMAX DETECT output LPFN FOR LOW PASS filter AMP reverse input LPFO...
  • Page 45 IC DESCRIPTION -3/3 (TC94A09F-301)-3/3 Pin Name Pin No. Description XTAL OUTPUT XVDD For XTAL VDD DVSR Rch D/A CONVERTER GND Rch DATA OUTUT DVRR Rch Reference VDD DVDD D/A CONVERTER VDD DVRL Lch Reference VDD Lch DATA OUTUT DVSL Lch D/A CONVERTER GND TESTM RESET RESET SIGNAL INPUT...
  • Page 46 LCD DISPLAY - 1/1 (CKC-4) SEGMENT COMMON -46-...

  • Page 47: Front Side

    ELECTRICAL ADJUSTMENT -1/1 1. RDS Voltage Adjustment Settings:Test point:IC901 pin 31 Adjustment location:SFR101 Method:Set AM/FM Signal generation to 98MHz,31dBuV(EMF) and adjust SFR101 so that the output becames 2.0V 0.1V. MAIN C.B L201 TU101 SFR101 IC901 FRONT SIDE -47-...
  • Page 48 MECHANICAL EXPLODED VIEW -1/1 -48-...
  • Page 49 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF O MC1001 8C-KC6-011-010 CAP, RTRY VOL O MC1002...
  • Page 50 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF O MC1065 8B-ZG3-607-010 PWB,FLEX PIC 2 O MC1066 8C-KCG-661-010 FF-CABLE,20P 1.0 90MM...
  • Page 51 COLOR NAME TABLE -1/1 Basic color symbol Color Basic color symbol Color Basic color symbol Color Black Cream Orange Green Gray Blue Transparent Blue Gold Pink Silver Titan Silver Brown Violet White Transparent White Yellow Transparent Yellow Metallic Blue Light Blue Transparent Green Dark Blue Transparent Orange...
  • Page 52 CD MECHANISM EXPLODED VIEW -1/1 (BZG-3CNF) CZA-5 -52-...
  • Page 53 CD MECHANISM PARTS LIST -1/2 (BZG-3CNF) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 54 CD MECHANISM PARTS LIST -2/2 (BZG-3CNF) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 55 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-R927M YZSTF 8A-ZL2-252-010 SH, 6-8-1.6 W/ADH 87-B40-087-010 BAG,PV 0.04-250-350 PL 8C-KC4-851-010 CUSHION,LEFT AIS...
  • Page 56 OTHER PARTS LIST -2/2 (CD MECHANISM BZG-3CNF) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 57 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 H251941...