Service manual

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QT-CD210/C

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Illustration: QT-CD210

CONTENTS

Page

IMPORTANT SERVICE NOTES (FOR QT-CD210 ONLY) ............................................................................................... 2

SPECIFICATIONS ............................................................................................................................................................. 2

NAMES OF PARTS ........................................................................................................................................................... 3

FITTING OF DIAL POINTER ............................................................................................................................................. 3

DISASSEMBLY .................................................................................................................................................................. 4

REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................... 4

ADJUSTMENT ................................................................................................................................................................... 6

SCHEMATIC DIAGRAM .................................................................................................................................................... 8

WIRING SIDE OF P.W.BOARD ....................................................................................................................................... 10

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 12

TYPES OF TRANSISTOR ............................................................................................................................................... 12

WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 13

TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 14

FUNCTION TABLE OF IC................................................................................................................................................ 18

PARTS GUIDE/EXPLODED VIEW

PACKING OF THE SET (FOR QT-CD210 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-CD210(BL)

QT-CD210(S)

QT-CD210(WH)

QT-CD210C(S)

SERVICE MANUAL

SHARP CORPORATION

No. SY964QTCD210/

This document has been published to be used

for after sales service only.

The contents are subject to change without notice.

Summary of content (32 pages)

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QT-CD210/C SERVICE MANUAL No. SY964QTCD210/ QT-CD210(BL) QT-CD210(S) QT-CD210(WH) QT-CD210C(S) Illustration: QT-CD210 • 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. CONTENTS Page IMPORTANT SERVICE NOTES (FOR QT-CD210 ONLY) ............................................................................................... 2 SPECIFICATIONS .........................................................................
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QT-CD210/C FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. IMPORTANT SERVICE NOTES (FOR QT-CD210 ONLY) BEFORE RETURNING THE AUDIO PRODUCT (Fire & Shock Hazard) Before returning the audio product to the user, perform the following safety checks. 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the audio product. 2.
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QT-CD210/C NAMES OF PARTS 11. 12. 13. 14. 15. 16. 17. 18. 19. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20.
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QT-CD210/C DISASSEMBLY Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure 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.
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QT-CD210/C TAPE MECHANISM SECTION (A1) x1 ø2x7mm (A1) x1 ø2x3mm Hook (A2)x2 Perform steps 1 to 5 of the disassembly method to remove the tape mechanism. (See page 4.) How to remove the record / playback and erase heads (See Fig. 5-1.) Record/Playback Head Erase Head 1. Remove the screws (A1) x 2 pcs., to remove the record/ playback head. 2. Remove the hooks (A2) x 2 pcs., toward the center position as shown in Fig. 5-1. and then extract the erase head upward.
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QT-CD210/C ADJUSTMENT MECHANISM SECTION • Driving Force Check • AM IF/RF Torque Meter Specified Value PLAY: TW-2412 Test Stage Over 120 g • Torque Check Torque Meter Specified Value Play: TW-2111 25 to 65 g.cm Fast Forward: TW-2231 60 to 130 g.cm Rewind: TW-2231 60 to 130 g.
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QT-CD210/C CD SECTION Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is not necessary to reajust it. Since this CD unit does not need adjustment, the combination of PWB and laser pickup unit is not restricted. TEST MODE Start While holding down the "PLAY" button, move the FUNCTION/POWER switch to "CD". Note 1. When the CD LID switch is in the OFF position, (CD LID is open) the unit will be able to enter the test mode.
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QT-CD210/C ( ): CD STOP 3.72V R801 1.87V (5.0V) 22 (1.45V) MAIN PWB-A1 Q801 KTA1266 GR SWITCHING MON A K E B K E A A F C B F 2200P R802 2.2K 5 5 5 4 4 4 3 3 3 2 2 2 1 1 1 +B K E RFN 24 1 VCC R805 39K A 2 FNI B 3 FPI F 4 TPI 6 MDI 7 LDO 1M F+ FG FO- PD B VR TR- SP+ SP- M SL+ SL- - PU-IN GND SW702 PICKUP IN C 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 + - + M701 SLED MOTOR 2 3 6 6 6 5 5 4 4 4 3 3 3 2 2 2 1 1 1 C820 0.
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QT-CD210/C C825 47/16 12 C823 0.022 +B R824 10K C826 47P 0V 0V 0V 0V 0V 0V 12 57 RFI 2.10V +B C833 0.033(ML) R829 3.3K 6 1 66 FOO 2.18V NC 2.49V SEG13 13 NC 12 70 TEBC 2.10V 2.49V SEG11 11 2.49V SEG10 NC 10 R834 3.3K 72 DMO 2.17V 2.49V SEG9 NC 9 2.49V SEG8 NC 8 2.49V SEG7 NC 7 2.49V SEG6 NC 6 15 4 75 VDD2 4.97V 76 VSS2 0V LCD801 LCD DISPLAY COM2 2.33V COM3 COM1 2.33V MVDD 4.96V MXO 4.96V MXI 0.30V NC NC 2.49V SEG3 3 MVSS 0V REMO-IN 4.
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QT-CD210/C SPEAKERS SP201 L-CH SP202 R-CH CNP101 12 34 3 2 1 C106 R106 R116 R114 R102 C114 C116 R126 R353 C353 L301 R118 C118 C119 C354 R122 R120 C117 R125 R354 E C B Q351 R351 R352 2 4 6 8 10 12 C123 D102 C351 C352 C112 R110 R107 IC101 C122 CNP201 H 1 3 5 7 9 11 C120 C121 R123 R124 B R109 C113 C109 R121 1 2 3 R117 R119 WH BK RD CNS201 G R108 F D C110 E C C111 C107 C108 B R101 REC.
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QT-CD210/C TAPE RECORD/PLAYBACK HEAD(240-4) SW601 TAPE MAIN (240-7) WH RD BK ERASE HEAD (240-5) M601 TAPE MOTOR (240-6) BK CNS101 WH 1 BK 2 3 RD 4 BK BK YL BR RD BK (230) T651 POWER TRANSFORMER BATTERYS DC9 V [ "D" size(UM/SUM-1, R20 or HP2) battery x 6 ] (229) YL C653 C652 YL RD D653 D652 C651 D654 D651 RD BK RD 1 SO651 AC INLET SOCKET AC 120V, 60Hz 2 CNS602 C654 POWER PWB-A3 OR OR PICK UP UNIT CD MOTOR PWB-B + 5 4 3 2 1 CNS803 1 2 3 4 5 6 F3895AF M702 SPENDLE MOTOR SW702 PICKU
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QT-CD210/C NOTES ON SCHEMATIC DIAGRAM • Resistor: To differentiate the units of resistors, the symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is an ohm resistor. The resistor designated "Fusible" is a fuse type resistor • Capacitor: To indicate the unit of capacitor, a symbol P is used: this symbol P means micro-micro-farad and the unit of the capacitor without such a symbol is microfarad.
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QT-CD210/C WAVEFORMS OF CD CIRCUIT NO DISC FOCUS SEARCH 1 STOP FO+ FO- SEL TRO 2 FMO 3 PLAY CUE 6 1 TEI 1 TRO 2 FMO 3 IC802 64pin SBAD 11 2 IC802 67pin RFO 15 3 IC802 71pin IC801 22pin STOP PLAY REVIEW 6 1 FEI TEI 1 TRO 2 FMO 3 IC802 64pin IC802 62pin RFGO 11 2 IC801 19pin IC802 67pin RFRP 15 3 IC801 17pin IC802 71pin STOP TEI PLAY TCD-782 TNO-02 PLAYBACK 16 1 IC802 64pin LO 1 RO 2 IC802 86pin TRO 2 SBAD 3 IC802 67pin 7 1 IC802 71pin
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QT-CD210/C TROUBLESHOOTING (CD SECTION) When the CD does not function When the CD section does not operate when the objective lens of the optical pickup is dirty, this section may not operate. Clean the objective lens, and check the playback operation. When this section does not operate even after the above step is taken,check the following items. Remove the cabinet and follow the troubleshooting instructions.
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QT-CD210/C • Laser failure. Is +5V applied to the emiter of Q204 ? Check the PWB pattern of Q204. No Yes Is +5V applied to the collector of Q204 ? Check the peripheral parts of IC803 and Q204. No Yes No Check the PWB pattern between collector of Q204 and pin 75 of IC802. No Check the PWB pattern between collector of Q204 and pin 1 of IC801. No Check the laser come on when pattern cut between pin 8 (SEL) of IC801 and pin 74 (SEL) of IC802. No Check the peripheral parts of IC801 and Q801.
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QT-CD210/C • Focus servo sawtooth wave failure. Is sawtooh wave output to the pin 66 (FOO) of IC802 ? No IC802 is faulty. Yes 1.5~2.5sec Check the PWB pattern of IC803. Is +8.1V applied to the pins 1 and 30 (VCC) of IC803 ? No Yes Check the PWB pattern of IC803. Is sawtooth wave obtained between pins 20 and 21 of IC803 ? No Yes 1.5~2.5sec Is sawtooth wave obtained between pins 3 and 4 of BI801/ CNS801 ? (as shown above) Check the PWB pattern between BI801/CNS801 and IC803.
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QT-CD210/C • Track search failure Does the sled motor run in FF/REW state when the CD TEST MODE is set? No Check as stated in item "SLED MOTOR OPERATION FAILURE". Yes Is the following wave output to the pin 67 (TRO) of IC802 during track search in normal playback? No IC802 failure. Yes TRO Is the following wave output to the pins 12 (TEO) of IC801 during track search in normal playback? No Yes TEO TEI Check the PWB pattern between pin 67 (TRO) of IC802 and pin 28 of IC803.
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QT-CD210/C FUNCTION TABLE OF IC IC802 VHiTC9457F0-1: Servo/Signal Control (TC9457F0) (1/4) Pin No.
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QT-CD210/C IC802 VHiTC9457F0-1: Servo/Signal Control (TC9457F0) (2/4) Pin No. Port Name 30 31* (S12)P4-1 (SO/S11/ SDA)P4-2 (SCK/SCL) P4-3 PUSEL2 NC Input Input/Output NC Input/Output 33 34 35 36 37 38 TEST0 TEST1 TEST2 TEST3 TEST4 TEST5 TEST0 TEST1 TEST2 TEST3 TEST4 TEST5 Input Input Input Input Input Input 39* 40* 41* 42* (OT19)/HSO (OT20)SPCK (OT21)SPDA (OT22)COFS /HSO SPCK SPDA COFS Output Output Output Output 43* DOUT DOUT Input/Output Digital output pin.
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QT-CD210/C IC802 VHiTC9457F0-1: Servo/Signal Control (TC9457F0) (3/4) Pin No. Port Name 63 SBAD SBAD Terminal Name Input/Output Input/Output Subbeam add signal input pin. 64 TEI TEI Input/Output Tracking error input pin. This input is read when tracking servo is on. 65 TEZI TEZI Input/Output Tracking error zero-cross input pin. 66 FOO FOO Input/Output Focus equalizer output pin. 67 TRO TRO Input/Output Tracking equalizer output pin.
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QT-CD210/C IC802 VHiTC9457F0-1: Servo/Signal Control (TC9457F0) (4/4) Pin No. Port Name 91 /HOLD 92 Terminal Name Input/Output Function RYNCREC Input This pin is used to input a signal that requests or clears the hold mode. Normally, use this pin for CD mode select signal input or battery detection signal input. There are two hold modes: clock stop mode (crystal oscillator turned off) and a wait mode (CPU stopped). These modes are entered by executing the CKSTP and WAIT instructions, respectively.
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QT-CD210/C —MEMO— – 22 –
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QT-CD210/C PARTS GUIDE MODEL QT-CD210(BL) QT-CD210(S) QT-CD210(WH) QT-CD210C(S) “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the following information. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For U.S.A. only Contact your nearest SHARP Parts Distributor to order.
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QT-CD210/C NO. PRICE RANK PARTS CODE DESCRIPTION INTEGRATED CIRCUITS IC1 IC101 VHITA2111N/-1 VHIBA3311L/-1 J J IC201 IC801 IC802 IC803 VHITA8227P/-1 VHITA2109F/-1 VHITC9457F0-1 VHILA6541D/-1 J J J J AN FM/AM IF MPX.,TA2111N AK REC./P.B.Equalizer Amp., BA3311L AH Power Amp.,TA8227P AL Servo Pre Amp.
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QT-CD210/C NO.
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QT-CD210/C NO. 606 607 608 610 PRICE RANK PARTS CODE XUPSD25P08000 XWHSD28-08120 XWSSJ26-06000 XHPSD20P03000 J J J J AB AB AA AA DESCRIPTION NO. Screw,ø2.5×8mm Washer,ø2.8×ø12×0.8mm Washer,ø2.7×ø5.3×0.6mm Screw,ø2×3mm PACKING PARTS (For Canada/Central America) SPAKA0036SJZZ SPAKC0091SJZZ SPAKZ0013SJZZ SPAKZ0014SJZZ SSAKH0001SJZZ SSAKK0002SJZZ J J J J J J AC AC TLABR1082SJZZ TLABZ0015SJZZ J J AB AC Packing Add.
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QT-CD210/C 306 701 A 304 701 B 704 302 702 C 301 303 D 703x2 E M702 F 305 M701 305x2 G SW702 H PWB-B 1 2 3 4 Figure 4 CD MECHANISM EXPLODED VIEW –4– 5 6
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QT-CD210/C 217 206 203 237 235 216 215214 213 212 211 A 223 605x2 222 204 202 B 235 231 604 240(240-1, 240-2, 240-3, 240-4, 240-5 240-6(M601), 240-7(SW601)) 204-1 204-2 603x2 605x2 205 209 C 232 238 610 228 606 233 606 TAPE MECHANISM 210 603x2 601 220 D SW810 PWB-A4 604x4 LCD801 221 608 PWB-A2 CD MECHANISM 607x3 234 605x2 604 602x3 605x2 PWB-A1 SO651 236 E T651 224 604x7 SP201 225 604x4 F PWB-A3 201 229 227 208 219 230 604x4 G BELT CONNECTION Main Belt SP202
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QT-CD210/C PACKING OF THE SET (FOR QT-CD210 ONLY) • Setting position of switches and knobs Tape Mechanism Control STOP STATE TUNING LOW FUNCTION SELECTOR OFF/TAPE VOLUME LOW Polyethylene Bag, Unit SSAKH0001SJZZ Operation Manual AC Power Supply Cord Packing Add.
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QT-CD210/C —MEMO— –7–
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QT-CD210/C —MEMO— –8–
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QT-CD210/C COPYRIGHT © 2000 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.