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Sanyo DC-C70, Service Manual, Page: 21 / 39

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Sanyo DC-C70 Service Manual Download Page 21

Summary of Contents for DC-C70

Page 1: ...inet Chassis 8 Tape mechanism 16 CD mechanism 18 t 1 LI 1 PRODUCT CODE No 12956005 IC block diagram description 19 FL display description 24 IC Transistor voltages 25 Schematic diagram CD 26 DECK 30 FRONT 32 TUNER 36 AMPLIFIER 40 Wiring diagram CD 28 DECK 29 FRONT 34 TUNER AMPLIFIER 38 POWER TRANSFORMER 42 POWER SWITCH DISC SWITCH and e t c 43 Wiring connection 44 This service manual consists of D...

Page 2: ...cm cone type Tweeter 5cm cone type Maximum Power handling capacity 180 W peak Nominal impedance 6 ohms Dimensions W x H x D Approx 240x 315x 282 mm Weight Approx 3 9 kg per speaker Specifications subject to change without notice LASER BEAM SAFETY PRECAUTION Pick up that emits a laser beam is used in this CD player section CAUTION USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER TH...

Page 3: ...nding service mode The unit enters a sewice mode only if another button is pressed during that 1 second 2 CD Repair 1 2 3 Within 1 second of activating service mode entry status press the CD BACK button to enter this sewice mode When in the CD function mode the LCD segment displays a CD operation indication that is different from its normal indication If a CD error occurs a display appears as show...

Page 4: ...LAY PAUSE button SERVICE MODE Tracking balance adjustment mode 5 Confirm that the oscilloscope waveform is symmetrical on the top and bottom in relation to OV VC 2 Checking the eye pattern 1 Switch ON the POWER 2 Connect an oscilloscope to TP4 RF and TP1 VC 3 Load the test disc 4 Press the PLAY button 5 Check to be sure that the eye pattern is at the center of waveform and that the diamond shape i...

Page 5: ... 2 Head azimuth DECK IIW 1 Remove the left side of CASSETTE LID 2 Load a test tape VTT 738 etc 10kHz for azimuth adjustment 3 Press the PLAY button 4 Use a flat tip screwdriver to turn the screw for normal azimuth adjustment so that the left and right outputs are maximized at the same phase during normal playback 5 Press the STOP button DECK B 1 Remove the right side of CASSEITE LID 2 Load a test ...

Page 6: ...ter show a reading of 3 020 10 Hz 4 Press the STOP button o 1 TAPE SPEED ADJUSIW 3 CHECKING THE MECHANISM TORQUES o Clean the head capstan and pinch roller before making any measurement DECK A B Measurement Takwp torque Back tension Tape tension Cassette for PLAY TV 2111A PIAY TW 2111A Drive power cassette measurement F FWDIREW TW 2231 TW 2412 PIAY 25 63 gr cm 2 0 6 0 gr cm 70 gr or more F FWDIREW...

Page 7: ...ConnectFM SGto FMAntenna connect to VTVM 90 0 MHZ SG 8dBPV TP25 L or TP26 R TP27 E 106 0MHZ TP25 c L CH R2325 TP27 E R2326 TP26 R CH julation 1 kHz 22 5kHz STEREO 6 75kHz PlLOT set Adjustment Remark Position Low El mcra than 0 9V High L21 lessthan 8 0 V Low L2101 Max High I I SG Modulation 1 kHz 30 40 9 AM Antenna IRE LooP Distance 60 cm I Step Adjusting Connection I SG Circuit Input I output Freq...

Page 8: ...EXPLODED VIEW CABINET CHASSIS J x o m p 7 ...

Page 9: ... DEC WINDOW VOL DEC CD TRAY ASSY CABINET FRONT ASSY GEAR SPRING WIRE LID CASSETTE L SPRING WIRE LID CASSEITE R BUITON REC BUITON TUNING BUITON SOUND BUITON CD OPEN BUITON DISC SELECT DEC SHEET DISC DLSCSELECT REFLECTOR DISC SELECT DEC WINDOW FUNC CD DEC WINDOW FUNC TAPE DEC WINDOW FUNC TUNER DEC WINDOW FUNC VIDEO BUITON FUNCTION BUITON CD BUITON TAPE REFLECTOR FUNCTION REFLECTOR SOUND SOUND BUITON...

Page 10: ...PLUG 6P PLUG 3P PLUG 3P CORD l P CONNECTOR DIODE 1A3 I DIODE 1A3 I ZENER DIODE MTZJ4 7B DIODE 1SS133 DIODE 1SS133 DIODE 1SS133 DIODE 1SS133 HEAT SINK HEAT SINK IC BU2090F ICTC4011 BF REF NO IC363 IC371 L3601 L3701 L3801 Q3122 or or or or Q3124 or or or or Q3125 or or or or Q3601 or or or or Q3602 or or or or Q3603 or or or Q3605 or or or 3611 or 3621 or Q3622 or 3701 or Q3702 or or or or Q3703 or ...

Page 11: ...J3 9B LED SLZ 981 C 13 H AB T2 FUNC LED SLZ 981 C 13 H AB T2 FUNC LED SLZ 981 C 13 H AB T2 FUNC LED SLZ 981 C 13 H AB T2 FUNC REF NO D6205 D6206 D6207 D6208 D6231 D6232 D6233 D6234 D6235 D6236 D6237 DS601 FL601 IC601 IC602 or IC604 IC605 L6000 6001 or or or oo2 or Q6003 or or Q6005 or or or 201 Q6202 Q6203 Q6204 Q6205 Q6206 06207 Q6208 Q6211 Q6212 Q6213 Q6214 Q6215 Q6216 Q6217 Q6218 S6001 S6100 or...

Page 12: ...TACT 6142401002 SWITCH TACT 6450065958 SWITCH PUSH 1P lT 6142205471 SWITCH TACT 6142401002 SWITCH TACT 6450065958 SWITCH PUSH 1P lT REF NO or S6136 or or S8137 or or TA601 X6001 X6002 PART NO DESCRIPTION 6142205471 SWITCH TACT 6142401002 SWITCH TACT 6450065958 SWITCH PUSH 1P lT 6142205471 SWITCH TACT 6142401002 SWITCH TACT 6450065958 SWITCH PUSH 1P lT 6142205471 SWITCH TACT 6141121444 DOUBLE FACE ...

Page 13: ...R 2SA733 P TR 2SA733 K TR 2SA608 F NP TR 2SA608 G NP TR KTA1266 GR TR KTA1266 Y TR 2SA733 P TR 2SA733 K TR 2SA608 F NP TR 2SA608 G NP TR KTA1266 GR TR KTA1266 Y TR 2SA733 P TR 2SA733 K TR 2SA608 F NP TR 2SA606 G NP FUSIBLE RES 2 2 JA l 4W FUSIBLE RES 10 JA l 4W RESISTOR 10 J lW RESISTOR 680 J lW ASSY C4705 C4706 C4750 C4751 C4805 C4806 C4850 C4851 C4902 C4903 CN201 or CN412 or CN422 CN452 CN454 or...

Page 14: ...5A P 4050207204 TR 2SC945A K 4050122002 TR 2SC1815 GR 4051413307 TR KTC3198 GR 4051413208 TR KTC31 98 Y 4050207402 TR 2SC945A P 4050207204 TR 2SC945A K REF NO or Q4434 or or or or Q4435 or or or or Q4436 or or or or Q4438 or or or or Q4439 or or or or Q4500 or Q4595 or or or or Q4600 or Q4695 or or or or Q4700 or Q4701 or or or or Q4702 or or or or or Q4800 or Q4920 or or or or or Q4921 or or or o...

Page 15: ... 6140305074 6450107665 6142310199 6140305074 6450230134 6450188824 6450188718 DESCRIPTION REF NO PART NO TRKTD2058Y 91 6143045168 TRKTC3198 GR 91 6143045182 TRKTC3198 Y 92 6143045274 TR2SC945A P TR2SC945A K TR2SC1815 GR TRKTC3198 GR TRKTC3198 Y TR2SC945A P TR2SC945A K TR2SC1815 GR TRKTC3198 GR TRKTC3198 Y TR2SC945A P TR2SC945A K TR2SC1815 GR TRKTD2058Y RESISTOR 0 22K 5W RESISTOR 0 22K 5W FUSIBLERE...

Page 16: ...M041 TM038 I 4 TM037 b TM087 TM015 M102 M096 TM014 TM TM i9j j q J 0 1 TM101 em I I y 4 TM033 2 KM y 9 TM06 M093_T3 TMo92p p W Jy_R TM032 I I TMO12 R TM014 4 TMO09 H TM055LI I TM020 TM019 TM115 TMO1o L TM114 TM079 TM020 TM108 L TM113 4 TM088 Y TM019 TM044 4 TM100 TMo20 P TM019 TM028 A TM100 TM033 M076L w I 15 ...

Page 17: ...ASE 6450242540 REV PLATE B 6450242557 REV PLATE A 6450242465 PINCH PLATE 6450275371 HEAD GUI DE ASSY 6450383726 HEAD PLAY AUDIO 6450279126 HEAD BASE SP 6450279157 REV SP 6450279072 CENTER BASE SP A 8450279089 CENTER BASE SP B 6450280030 ASSY PINCH ARM 6450280542 ASSY PINCH ARM 6450242359 PINCH SP 6450279140 PINCH SP 6450279133 PINCH SP 6450279119 SENSOR PCB 6450242762 CONNECTOR S7B PH K S 64502559...

Page 18: ...EXPL ODED VIEW CD CHANGER MECHANISM c A 11 CM14 17 ...

Page 19: ...VELGEAR1 GEARIDLER1 PLATESPRING BEVELGEAR3 PULLEY C ASSY CLAMPER ARMSLIDERR ARMSLIDERL SLIDER 1 ASSY SLIDER 2 FWDIRVS ARMSTOPPERA2 ARMSTOPPERB REF NO CM39 CM40 CM41 CM43 CM44 CM45 CM46 CM47 CM48 CM49 CM50 CM51 CM52 CM60 CM61 CM62 CM63 CM64 CM65 CM66 CM67 PART NO 6450336263 6450336218 6450336447 6450336454 6450335778 6450335785 6450337048 6450336393 6450336003 6450336010 6450335723 6143037545 64503...

Page 20: ... Pin for Focusing ntrol signal 46 FSC o Output Pin for Focus Search Smooth Condenser 17 FD 1 Connection Pin for Constant of Focusing Phase 47 TBC o Connection Pin for Variable Range Setting of Compensation Consist of between FD and FA EF Balance 18 FA I Connection Pin for Constant of Fccusing Phase 46 NC No Connect Compensation Consist of between FD and FA 49 DEF o Output Pin for Defect Detection ...

Page 21: ...mentor H rk emnhasis 331 C2F I O 10utput terminal of C2 flag 31 I DOUT I O 10utput terminal of digital out No Pin Name m Function S2 TEST3 I Test pin 33 TEST4 I Test pin 34 NC Nonconnection 35 MUTEL o Mute outputterminal for L ch 36 LVDD Powersupply for L ch 37 LCHO o Outputterminal for L ch 28 LVSS GND for L h 33 RVSS GND for R ch 40 RCHO o Output terminal for R ch 41 RVDD Power supply for R ch 4...

Page 22: ... 0S1 vCC SEEK 10 7 MI z MIX ywm AMIFM iC245 LC72121 M PLL Synthesizer iC361 BU2090F 12bit Seriai Paraiiei Converter Vss VDD Vux XIN PD XOUT AIN AouT Vssa CE 4 IEERE FMIN I OUTPUTBUFFER OPENDIAIN I I 1 01 4 CL 5 006 PfA R Vm 18 REBET Vud 5 F LMvkw 1 1 IFIN No 1 2 3 4 5 6 7 6 9 10 11 12 13 14 15 16 21 Pin Name Port Name Function Vss Vss Ground DATA D OUT Data input CLOCK EX1 CLK Clock input m 78 9 1...

Page 23: ...rallel Converter Vss VDD A OUTPUT A INPUT A INPUT VEE I 21 1 8 A 2 7 B 3 6 4 5 Vcc B OUTPUT B INPUT B INPUT I No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 DATA CLOCK PinName Por2 Name Function Vss Vss Ground DATA D OUT Datainput CLOCK EX2 CLK Clockinput Qo VF KB output forVocalfadercontrol Q1 VF KC Output for Vocal fader control 02 SOUND 2 Output for Surround LS1 control Cx3 SOUND 1 Output for Surround LS2...

Page 24: ...I I Failure record switch Tape B side C N I OW I 74 G_FWD I l ON LOw 1Failure record switch Tape A side 751 B PACK I I lTaoe set detection B side switch ON LOW 25 CD_SW3 I SW input SW6 Open Pick Limit switch 26 LEVEL I LEVEL input 1 1 t 761 B PALY I lPlay B side switch ON LOW 1 27 WRQ I CD DSP interface sub Q Request a PROTECTOR I Set protector lrregulacLow 29 IR I Remote control inDut 1 771 A_PAC...

Page 25: ... S19 S19 S19 REC S19 S19 S19 S2U S20 REPEAT S20 o S20 S20 S2u S21 821 ALL S21 MPX W S21 S22 S22 ONE S22 S22 S22 sia S18 G9 G1O GI 1 G12 S1 S1 S1 S1 S2 S2 S2 S2 S3 S3 S3 S3 S4 S4 S4 S4 S5 S5 S5 s so 86 S6 88 S7 87 S7 S8 S6 S6 S8 93 s S9 S9 Slo Slo Slo S11 S11 S11 S11 S12 S12 S12 S12 S13 S13 S13 S13 S14 S14 S14 S14 S15 CONT MUTE kHz S16 20MPU REC MEMO MHz S17 PRESET ST S18 TR I MONO S19 RANDOM FADER...

Page 26: ...6 50 0 3 0 2 5 25 0 0 9 0 0 0 0 0 1 6 5 0 0 0 2 5 2 4 0 0 0 4 9 0 18 19 a 21 a B 24 z 27 B 29 30 50 0 0 24 50 5 0 4 9 1 5 0 0 1 8 0 0 4 9 0 0 24 0 4 9 4 8 24 0 0 2 4 0 4 9 33 34 35 36 37 38 3e 40 41 42 43 44 o 0 0 52 21 0 0 21 52 0 5 0 2 0 20 0 0 4 9 52 21 0 0 21 52 4 9 4 9 2 0 20 46 49 50 51 52 53 54 s 56 57 58 60 0 0 1 0 0 9 25 0 9 0 0 0 4 5 4 8 0 z 22 0 2 5 1 3 25 0 0 0 4 8 4 8 4 8 0 21 63 64 0...

Page 27: ... 1 _ I 1 L 1 1 4 a k ...

Page 28: ...WIRING DIAGRAM CD cd c1 I 1 1531 2 J 546 RT3 J1027 J1023 E J1905 J102S R1504 J 1026 JIO18 u lam I 28 ...

Page 29: ...WIRING DIAGRAM DECK r J I m 0 Iz C 3606 it C3607 J30A0 29 ...

Page 30: ... li i idw 4 I is B I 1 1 1 1 I 1 L I Ill I I I r r II 5F H l t Q Q Q t I r ll x Y ...

Page 31: ...y _ _ _ 1 1 I 1 1 I I 1 1 I 1 I I 1 I _ _ _ _ _ _ _ _ _ d m i I r I 1 u mb 1 II 1 _ 1 II mmTm c I 1 1111 L I I 3WW4 4 W k I I I I I I I k I I I I I I ru L L m y h T T I H cr ...

Page 32: ... L J Is J6 03 J640 I x eo5 g 7iz02 II 8 pm Jf24 3 In Ieaod X 50 2 IMgJ Jbfx 3 Jb802 1 n m z b 16610 ...

Page 33: ...I aZ 2 Y e T 1 r Jr R2 46 I 4 2A62 f 13 W l I 1215 3 3 g9 T I I I I R2302 r 3 3K I I I witll K R2307 I I I ...

Page 34: ...w m a u U LJ L 1 1 1 I ...

Page 35: ... em 0 m L CL 8 1 7A CE M J J I l 1 k 1 L Ie 1111111 w L q II 11111 I m w I M m 1 ...

Page 36: ... L WIRING DIAGRAM POWER TRANSFORMER POWER TRANSFORMER PRIMARY P W B POWER TRANSFORMER SECONDARY P W B 42 ...

Page 37: ...WIRING DIAGRAM POWER SWITCH DISC SWITCH and e t c DISC SWITCH P W B POWER SWITCH P W B REGULATOR P W B 43 ...

Page 38: ...75 m CN201 ANT IN TUNEFVAMP P W B AM LOOP ANTENNA J L CH c SP EA ER CN452 VIDEO DVD IN AUDIO CN470 SPEAKERSOUT 6ohm MIN R CH SP o ER l CN454 1OP c J2y 5 N 5 CN422 PHONES I CN492 7P SECOPN ARY P W B DISC SWITCH P W B BOARD TO BOARD Ill Jr u E hAJOR lFI I g 44 ...

Page 39: ...S o Sep 1 991450 NS Printed in Japan SANYO Technosound Co Ltd Osaka Japan ...

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