Sharp QT-CD141, Service Manual

Page 1: ...ECTION 23 FUNCTION TABLE OF IC 27 PARTS GUIDE EXPLODED VIEW PACKING OF THE SET FOR U S A ONLY In the interests of user safety the set should be restored to its original condition and only parts identical to those specified should be used QT CD161 S QT CD141 BK SERVICE MANUAL SHARP CORPORATION No S5929QTCD161 This document has been published to be used for after sales service only The contents are ...

Page 2: ...arts and a known earth ground such as conduit or electrical ground connected to earth ground Use a VTVM or VOM with 1000 ohm per volt or higher sensitivity to measure the AC voltage drop across the resistor See diagram Connect the resistor connection to all exposed metal parts having a return path to the chassis antenna metal cabinet screw heads knobs and control shafts escutcheon etc and measure ...

Page 3: ...emote control QT CD161 ONLY 1 TUNER Tuning CD Play Repeat Button 2 CD Track Down Review Button 3 Band Pause 4 CD Track Up Cue Button 5 TUNER Tuning CD Stop Button 1 1 3 3 4 4 5 5 6 7 8 2 2 10 9 15 14 17 11 13 12 16 19 18 20 21 REMOTE CONTROL QT CD161 ONLY 15 15 Sensor Remote 8 20 0 2 m 6 m 0 2 m 6 m Notes concerning use Replace the batteries if the operating distance is reduced or if the operation...

Page 4: ... excellent performance 1 Take cassette tape and compact disc out of the unit 2 Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit 3 Take off nylon bands or wire holders where they need to be removed when disassembling the unit After servicing the unit be sure to rearrange the leads where they were before disassembling 4 Take sufficient care on stat...

Page 5: ...x1 pcs to remove the gear A4 x 1 pcs 3 Remove the pickup Figure 5 3 REMOVING AND REINSTALLING THE MAIN PARTS Top Cabinet Tape Mechanism CD Mechanism F1 x3 ø2 5x10mm C1 x1 ø2 5x8mm E1 x4 ø3x10mm C2 x1 G1 x2 ø3x10mm G1 x1 ø3x10mm G1 x2 ø3x10mm Terminal PWB Driver Push G2 x1 Rear Cabinet Figure 5 4 A1 x2 ø2 6 x6mm Stop Washer A3 x1 CD Mechanism Gear A4 x1 Shaft A2 x1 Pickup Figure 5 2 Rear Cabinet H1...

Page 6: ...t Connection TUNER SECTION FM RF Signal generator 1 kHz 75 kHz dev FM modulated Band 87 5 MHz fL L2 1 Coverage 2 0 0 1 V RF 90 0 MHz 90 0 MHz L1 2 10 30 dB Test Stage Frequency Frequency Display Setting Adjusting Parts Instrument Connection 1 Input Antenna Output TP1 2 Input Antenna Output Speaker Terminal Detection Signal generator 10 7 MHz FM sweep generator IF 10 7 MHz 98 00 MHz T1 Turn Input P...

Page 7: ...n the STOP key is pressed during playback the laser goes out and playback is stopped and the process returns to step 1 The pickup position does not change 5 When the MEMORY key is pressed during playback tracking servo ON OFF is performed Even if the playback is stopped in servo OFF state the servo is turned on when the playback is restored Indication The current pickup position and time are indic...

Page 8: ... second Preset frequencies for various destinations random preset memory BAND CH U S A EUROPE GENERAL 1 GENERAL 2 1 FM 87 5M FM 87 50M FM 87 50M FM 87 5M 2 FM 108 0M FM 108 00M FM 108 00M FM 108 0M 3 FM 98 0M FM 98 00M FM 98 00M FM 98 0M 4 FM 90 0M FM 90 00M FM 90 00M FM 90 0M 5 FM 106 0M FM 106 00M FM 106 00M FM 106 0M 6 AM 530K AM 522K AM 531K AM530K 7 AM1720K AM1620K AM1602K AM1620K 8 AM 990K A...

Page 9: ...gnated Fusible is a fuse type resistor Capacitor To indicate the unit of capacitor a symbol P is used this symbolPmeansmicro micro faradandtheunitofthecapacitor withoutsuchasymbolismicrofarad Astoelectrolyticcapacitor the expression capacitance withstand voltage is used CH TH RH UJ Temperature compensation ML Mylar type P P Polypropylene type The indicated voltage in each section is the one measur...

Page 10: ...0 0 V JP 0 5ms 10 0 V JP 0 5ms 0 50 V JP 0 5ms 1 00 V TE 6 7 9 8 6 7 9 8 50ms 10 0 V JP CUE 50ms 10 0 V JP 50ms 0 50 V JP 50ms 1 00 V TE 6 7 9 8 6 7 9 8 11 10 11 10 12 12 REVIEW 50ms 10 0 V JP 50ms 10 0 V JP 50ms 0 50 V JP 50ms 1 00 V TE 0 5ms 10 0 V JP 0 5ms 10 0 V JP 0 5ms 0 50 V JP 0 5ms 1 00 V TE PLAY 20ms 1 00 V SPO NORMAL DISC TN0 01 20ms 2 00 V CLV PLAY TCD 712 140mm TN0 01 50ms 1 00 V SPO ...

Page 11: ...E REGULATOR 16 27 31 28 15 30 29 M M M702 SLIDE MOTOR M701 SPIN MOTOR 1 2 3 4 7 4V CD SECTION MAIN TO VVDD XIN XOUT VDD XVDD EFMO EFMIN CLV CLV V P HFL TES TOFF JP JP TGL RES CQCK COIN SQOUT RWC WRQ LCHO IC802 LC78622E SERVO SIGNAL CONTROL 16 93MHz XL801 SLI SLC CV JP DRF CE DAT CL CLK DEF SLD SLEQ SPO FD TO SL SL F E FIN1 FIN2 64 62 5V Q801 VCC1 LDD LASER DRIVER SERVO AMP LA9240M IC801 30 1 7 4V ...

Page 12: ... FUNCTION SW201 A B FROM TUNER SECTION IC2 9 10PIN CD REC PB SW102 A F P B REC IC101 EQULIZER AMP BA331IL REC REC P B P B P B L R L R SW102 REC PB B D REC PB SW102 C E L CH REC PB HEAD FROM CD DISPLAY SECTION R CH ERASE HEAD SW102 H REC PB BIAS OSC Q351 L301 SW201 G REC PB B1 M601 TAPE MOTOR SW601 MAIN D651 D654 RECTIFIER TUNER B BACK UP B T601 POWER TRANSFORMER BATTERY DC12V D SIZE UM SUM 1 R20 o...

Page 13: ...2 11 10 2 1 13 14 1 6 3 4 9 7 8 IC3 TC9216P PLL B 21 B B IC2 LA1805 FM AM IF APX IC1 TA7358AP FM FRONT END 5 T3 AM IF Q5 Q6 AM OSC OUT VT CONTROL Q3 Q4 L3 AM ANT VD3 1 TC1 L4 AM OSC VD3 2 23 24 3 4 5 6 19 20 13 13 14 11 13 76 79 56 72 27 24 32 31 23 12 22 16 10 7 6 17 SW504 MEMORY SW503 BAND SW502 TUNER DOWN SW501 TUNER UP SW505 PRESET DOWN SW506 PRESET UP LCD DISPLAY LCD501 11 10 9 8 7 6 5 4 3 2 ...

Page 14: ... 2 0P C833 0 001 R836 47K R809 27K R807 1K R806 100 C803 0 1 50 R833 5 6K R821 56K C816 0 001 R8 1 2 R831 1K Q801 KTA1266 GR LASER DRIVE C849 0 022 RES CQCK CO IN RWC SL SL DRF SQOUT WRQ PU IN D GND R CH POWER GND VCC1 NC TBC FSC GND SLI SLC RFS RFSM CV CV SLOF HFL TES TOFF TGL JP JP A GND FE FE FA FA TO JP TE TE TESI TH SCI TA TD TD TB F E FIN1 FIN2 FD FD SPD SP SPG SP NC SL SL SLD SLEQ VREF GND ...

Page 15: ...NER GND 64 63 62 1 6 605 958 57 6 5 55 54 53 52 51 0 5 49 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 4 5 6 7 8 9 10 11 12 13 14 17 18 19 20 21 22 23 24 25 26 27 28 29 B B PU IN SL SL SP SP 1 BI802 2 3 4 5 1 BI801 2 3 4 5 6 7 8 6 5 4 3 2 1 BI803 6 5 4 3 2 1 CNS803 1 CNS802 2 3 4 5 1 CNS801 2 3 4 5 6 7 8 6 5 4 3 2 1 CNP803 CD MOTOR PWB B M M702 SLED MOTOR M M701 SPINDLE MOTOR SW702 PICKUP IN PD...

Page 16: ... 8 2K R115 3 9K R117 3 9K C117 10 16 C115 0 018 ML R118 3 9K R125 680K C120 47 16 C119 2 2 50 R119 3 3K R120 3 3K D102 1N4148 D101 1N4148 C122 0 01 Z C121 0 01 R122 2 7K R110 120 C114 47 16 C110 270P B R108 1K R107 1K C111 330P B C112 330P B C109 270P B C123 220 10 D103 1N4148 SW202 A X BASS SW102 G SW102 E SW102 D SW102 H SW102 B SW102 C FUNC CD 7 4V P19 7 A 11 H P14 2 H P19 11 HION BACK UP D GND...

Page 17: ...1 ML C232 0 1 ML C234 470 10 C230 100 10 C225 220 25 C222 0 001 B IC202 LA4597 POWER AMP 13 12 11 10 9 7 6 4 3 2 1 C229 100 10 C221 0 001 B Q201 KTC3199 GR R223 4 7K C226 0 022 Z D201 1SS133 R224 4 7K R222 1K C223 100 10 C224 100 10 R225 100K C228 1 50 C218 0 0027 B R220 3 3K C217 0 0027 B R219 3 3K C216 0 027 ML C215 0 027 ML VR201 A 20K B VR201 B 20K B 5 8 3 2 1 CNS602 R227 120 1 4W R228 120 1 4...

Page 18: ...W R52 1K R48 56K R47 56K R46 56K R50 1K R51 1K C21 0 022 Q5 KRA102 M Q6 KRC104 M Q5 Q6 FM RIPPLE FILTER C56 0 01 L5 CH 470µH C57 100 10 C26 0 022 R6 560 R13 390 Q1 KTC3194 Y RE AMP R8 47K C9 33P CH R4 10 R5 10K C11 22P CH R71 6 8K VD2 KV1360NT R16 2 2K TC1 5P 21 22 23 28 29 30 31 32 C60 100P R72 1K C58 0 01 C71 0 022 C59 0 022 C70 0 001 C22 0 01 M C28 2 2 50 C72 0 001 FB B P F FM IF IN MIX AM AM A...

Page 19: ... 69 70 71 72 73 74 75 76 77 78 79 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 FUNC CD P MUTE VL3 COM0 COM1 COM2 COM3 AVSS VREF VCC SEG0 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 VL1 LID SW CLOCK DATA PERIOD T MUTE AREA KEY1 KEY0 STEREO MONO ST WRQ SD PU IN DRF RESET CQCK COIN RWC SL SL RESET P MUTE1 P MUTE2 SYNC IN FUNC VSS XOUT XIN REMOCON SYS STOP SQ OUT SEG9 SEG10 SEG11 SEG12 SEG13 ...

Page 20: ...3 C511 R506 R510 R509 R513 R512 R511 C17 R12 R9 R7 R56 C233 R25 C36 C40 T2 FM DET R24 C34 C35 C51 R11 C20 C18 R10 VD3 C224 C222 Q802 Q801 R151 R152 R153 C41 C42 R30 D4 C152 C151 C502 R39 C49 C46 C37 R36 R38 C48 R42 C45 R29 C47 R18 R43 R52 R48 R50 R51 R47 R46 C56 C50 ZD1 C57 C33 CF2 C32 C72 D3 C26 R17 C21 C58 R455 R457 R44 C802 R801 C801 C888 C506 D501 D502 R548 J48 C59 R3 CNP602 R526 R527 R528 Q35...

Page 21: ...ENNA 1 7 8 9 6 12 11 10 CNS802 CNS803 1 2 3 4 5 1 2 3 4 5 6 1 2 3 4 5 6 WB A1 CNS801 7 8 SPEKERS SP502 SP501 L CH R CH FM ROD ANTENNA BK BK RD WH RECORD PLAYBACK HEAD 233 4 ERASE HEAD 233 5 TAPE BK CNS101 BK WH RD BK 4 3 2 1 YL TAPE MOTOR 233 6 M601 TAPE MAIN 233 7 SW601 CNS201 P20 1 A TO HEADPHONES PWB QT CD161 P20 3 A TO MAIN PWB QT CD141 1 2 3 WH BK RD SPENDLE MOTOR PICKUP IN M701 210 SLED MOTO...

Page 22: ...SW502 FW201 FW501 R547 SW501 R544 R545 SW503 R546 R219 C217 C218 C520 MEMORY BAND TUNER DOWN R220 C216 C215 TUNER UP PRESET UP SW506 PRESET DOWN PT PT ACSO GND B ACSO YL YL RD BK BK CNS602 3 2 1 CNP602 P20 6 B TO MAIN PWB BATTERIES DC3V AA size UM SUM 3 R6 or HP 7 battery x 2 for tuner memory BATTERIES DC12V D size UM SUM 1 R20 or HP2 battery x 8 BATTERY PWB A4 SWITCH PWB A6 BATTERY PWB A5 FW201 P...

Page 23: ...use a cleaning disc designed for CD optical pickup lenses HOW TO USE 1 Using the brush in the cleaner cap apply 1 or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which has the mark next to it 2 Place the CD cleaner disc onto the CD disc tray with the brush side down then press the play button 3 You will hear music for about 20 seconds and the CD player will automatically stop ...

Page 24: ...alcohol Do not touch the lens with the bare hand See if the pick up is in the pick up in SW702 pu in switch position If the items mentioned above are OK check the main microcomputer IC501 Yes Yes The CD function will not work The CD operating keys don t work Check the CD DPS microcomputer IC501 power supply 4 19 MHz and 16 93 MHz clock and reset terminal Check the waveform of SCK SO DATA and SI CO...

Page 25: ...1 41 When playing back the disc Waveform in case of normal play back 3 2 1 4 0 5s 1 00 V IC801 16 FD 0 5s 10 0 V IC801 12 CLV 0 5s 10 0 V IC801 54 DRF 0 5s 2 00 V IC801 7 TE Check the tracking system Check the tracking system Check waveform of IC801 pin 7 TE Check the periphery of IC801 pin 8 to pin 15 and IC803 to BI801 CNS801 Tracking servo is inoperative The waveform shown in Fig 25 3 appears a...

Page 26: ...d 10 Error Yes Check PDO waveform Fig 26 Checking the VCO PLL system Play operation is performed when disc exits Yes Although HF waveform is normal TOC data cannot be read Figure 26 2 3 0 5s 1 00 V IC802 3 PDO 0 5s 1 00 V IC801 16 FD As VCO freque ncy is locked at 4 32 M Hz voltage of PDO rises and stabili zes Stop Play Check IC802 pins 37and 40 Check the periphery of IC802 OPAMP Abnomal Usually t...

Page 27: ...23D reset signal output 18 P50 INT2 CQCK CD Output Serial data synchronous clock for LA9241M LC78623D interface 19 P47 SRDY COIN CD Output LA9241M LC78623D control command output terminal 20 P46 SCLK RWC CD Output READ WRITE control output terminal to LA9241M LC78623D 21 P45 TXD SL CD Output Slide motor forward control output terminal to LA9241M 22 P44 RXD SL CD Output Slide motor back control out...

Page 28: ...EG8 Output LCD segment output 65 SEG7 SEG7 Output LCD segment output 66 SEG6 SEG6 Output LCD segment output 67 SEG5 SEG5 Output LCD segment output 68 SEG4 SEG4 Output LCD segment output 69 SEG3 SEG3 Output LCD segment output 70 SEG2 SEG2 Output LCD segment output 71 SEG1 SEG1 Output LCD segment output 72 SEG0 SEG0 Output LCD segment output 73 VCC VCC Microcomputer power 5V 74 VREF VREF A D convert...

Page 29: ...amic type VCT Semiconductor type VC MF Cylindrical type without lead wire VC MN Cylindrical type without lead wire VC TV Square type without lead wire VC TQ Square type without lead wire VC CY Square type without lead wire VC CZ Square type without lead wire VC J The 13th character represents capacity difference J 5 K 10 M 20 N 30 C 0 25 pF D 0 5 pF Z 80 20 If there are no indications for the elec...

Page 30: ...39 µF 50V Mylar C215 216 VCQYKA1HM273K J AB 0 027 µF 50V Mylar C217 218 VCKYPA1HB272K J AA 0 0027 µF 50V C219 220 VCQYKA1HM683K J AB 0 068 µF 50V Mylar C221 222 VCKYPA1HB102K J AA 0 001 µF 50V C223 224 RC GZA107AF1A J AB 100 µF 10V Electrolytic C225 RC GZA227AF1E J AB 220 µF 25V Electrolytic C226 VCKYPA1HF223Z J AB 0 022 µF 50V C227 RC GZA478AF1E J 4700 µF 25V Electrolytic C228 RC GZA105AF1H J AB ...

Page 31: ...6W R5 VRD ST2CD103J J AA 10 kohm 1 6W R6 VRD ST2CD561J J AA 560 ohms 1 6W R7 VRD ST2CD472J J AA 4 7 kohms 1 6W R8 VRD ST2CD473J J AA 47 kohms 1 6W R9 VRD ST2CD104J J AA 100 kohm 1 6W R10 VRD ST2CD683J J AA 68 kohms 1 6W R11 VRD ST2CD563J J AA 56 kohms 1 6W R12 VRD ST2CD472J J AA 4 7 kohms 1 6W R13 VRD ST2CD391J J AA 390 ohms 1 6W R15 VRD ST2CD122J J AA 1 2 kohms 1 6W R16 VRD ST2CD222J J AA 2 2 koh...

Page 32: ...ide Type Record Playback SW201 QSW S0008SJZZ J AG Switch Slide Type Function Power SW202 QSW P0001SJZZ J AD Switch Push Type X Bass SW501 QSW K0001SJZZ J AC Switch Key Type Tuner Up SW502 QSW K0001SJZZ J AC Switch Key Type Tuner Down SW503 QSW K0001SJZZ J AC Switch Key Type Band SW504 QSW K0001SJZZ J AC Switch Key Type Memory SW505 QSW K0001SJZZ J AC Switch Key Type Preset Down SW506 QSW K0001SJZZ...

Page 33: ...00 J AB Screw ø2 5 8mm 607 XUBSD30P08000 J AA Screw ø3 8mm 608 XHBSD20P03000 J AA Screw ø2 3mm 609 XEBSF30P10000 J AA Screw ø3 10mm ACCESSORIES QACCU0001SJ00 J AR AC Power Supply Cord TINSE0023SJZZ J AH Operation Manual For U S A Central America QT CD161 TINSE0025SJZZ J AP Operation Manual For U S A Central America QT CD141 TINSZ0037SJZZ J Operation Manual Except for U S A Central America QT CD161...

Page 34: ...QT CD161 141 A B C D E F G H 1 2 3 4 5 6 Figure 5 CD MECHANISM EXPLODED VIEW 5 701 304 701 302 301 702 303 M701 703x2 305x2 SW702 M702 305 PWB B 704 306 ...

Page 35: ...03 PWB A3 601x2 603x2 230 603 202 211 216 225x2 226 208 602x4 601x4 602x2 212 209 606 SW507 240 214 235 217 223 222 221 220 219 218 224 607x2 603x4 233 233 1 233 2 233 3 233 4 233 5 233 6 233 7 604x3 201 605x3 603x4 215 231 607 603x6 603x2 603x4 207 PWB A1 PWB A6 603 603x3 603 227 2 227 1 213 PWB A4 PWB A5 PWB A7 PWB A2 234 227 603 603x2 607x2 607 SO601 T601 SP501 204 205 206 609 SP502 IC203 IC202...

Page 36: ... Code Label Energy Star Label TLABZ0031SISC TCAUZ0006SJZZ Energy Star Label TLABZ0032SJZZ Remote Control Not Replacement Item COPYRIGHT 1999 BY SHARP COPORATION ALL RIGHTS RESERVED No part of this publication may be reproduced stored in a retrieval system or transmitted in any from or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the pub...