QT-CD700W SERVICE MANUAL PORTABLE CD STEREO SYSTEM MIC PAUSE STOP/EJECT F.FWD REWIND PLAY RANDOM RECORD PLAY/ PAUSE STOP POWER FM ST MODEL QT-CD700W UP/ F.FORWARD DOWN/ F.REVERSE PROGRAM REPEAT • In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used. CONTENTS Page AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................
QT-CD700W SAFETY PRECAUTION FOR SERVICE MANUAL z This product is classified as a CLASS 1 LASER PRODUCT. z WARNINGS: The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements. However, the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam.
QT-CD700W CHAPTER . FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS QT-CD700W ■ General Power source AC 110-127/220-240 V, 50/60 Hz DC 12 V ["C" size (UM/SUM-2, R14) battery x 8 ] Power consumption 12 W Output power PMPO: 32 W (AC operation, 10% T.H.D) RMS: 4 W (2 W + 2 W) (DC operation, 10% T.H.
QT-CD700W Names of parts 1 2 3 4 5 6 7 8 9 21 20 19 18 17 16 10 11 12 13 14 15 27 A B BEAT CUT 22 25 23 24 26 VOLTAGE SELECTOR 110V127V 220V240V 4 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. Function Switch Volume Control (Tape) Pause Button (Tape) Stop/Eject Button (Tape) F.Forward Button (Tape) Rewind Button (Tape) Play Button (Tape) Record Button CD Compartment Tuning Control Band Selector (CD) Random Button (CD) Stop Button (CD) Track Up/F.
QT-CD700W FITTING OF DIAL POINTER Setting method of dial pointer 1) Remove the front cabinet. 2) Remove 3 pcs screws (S06) φ3 x 10 PA from tuning bracket (bottom of PWB board/pattern side), and remove 1 pc screw (S14) φ2.6 x 10 PH from tuning bracket/CD compartment’s flange (with fitting between CD compartment and tuning bracket). 3) Remove dial pointer. 4) Insert dial pointer from A direction to tuning bracket, then engages the dial pointer’s guide hook into tuning control’s slot properly B.
QT-CD700W OPERATION MANUAL 1 Preparation for use ■ Turning the power ON and setting to the STAND-BY mode AC110-127/220-240 V, 50/60 Hz TA PE (ST ■ Operation with batteries AN D-B Y) CD FU NC RADIO TIO N To AC INPUT ● 8 "C" size batteries (UM/SUM-2, R14) ● Batteries are not included.
QT-CD700W DISASSEMBLY Caution On Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling, 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.
QT-CD700W CD DOOR TOP CABINET (S14)X1 φ2.6X10PH FUNCTION KNOB FUNCTION KNOB BKT BAND KNOB (S05)X1 φ3X8mm (S12)X1 φ3X8PA BAND KNOB BKT (S05)X1 φ3X8PWH DOOR LATCH SWITCH CD MECHANISM RUBBER CUSHION X4 (S11)X4 φ2.6X12PWA VOLUME KNOB BRACKET MAIN PCB ASS'Y TUNING BRACKET (S02)X1 φ2.
QT-CD700W The wire arrangement of AC Input Socket, Voltage Selector & Power Transformer.
QT-CD700W ADJUSTMENT TUNER SECTION fL : Low-range frequency fL : High-range frequency MECHANISM SECTION Torque Specified Value Play: TW-2412 Over: 80g FM IF /RF Torque Check Torque Meter Specified Value Play TW-2111 30 to 60g.cm Fast Forward Rewing: TW-2231 55 to 140g.cm 55 to 140g.cm Specified Value/ Adjusting Point Test Stage fL : L301 FM Band Coverage fL : C2 fL : 90 MHz: L303 fH: 106.
VR1 SW1 SW3 1 2 IC201A 18 13 FH 24 1 SW4 FM TRACKING FL IC1 12 T303 AM BAR AM ANTENNA L303 C1 C3 PVC1 3 11 D MOTOR M601 E 4 Figuer 11 ADJUSTMENT POINTS 5 BIAS OSC t101 IC101 CN103 1 2 3 4 FL FH FM BAND COVERAGE L301 C2 C4 T301 B AM IF ANT C FM-ANT A FH FL FH FL AM COVERAGE AM TRACKING FM ROD ANTENNA QT-CD700W SW2 TAPE LEAF SW WH WH RD BK TAPE MECHANISM Variable resistor in motor CN1 F IC3 PHONE G H 6
QT-CD700W CD SECTION Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is not necessary tp readjust 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 “Stop” and “RANDOM” button simultaneously, move the FUNCTION switch to “CD”. Note 1. When the CD DOOR switch is in the OFF position, i.e. CD DOOR is opened, the unit is now in test mode.
QT-CD700W Q502 C610 A D4 C108A C104 13 10 GND 5 B 1 22 26 32 P19 IC201A 64 CN124A 17 16 59 C 38 42 54 48 49 C126A B C E D Q1 D3 E 5 6 7 8 CN8 D2 9 10 11 12 D505 C525 CN503A 1 2 CN5 D506 CD DOOR C515 E C B C C133A B C E 4 33 B C E Q4 RD F 2 CN5A TP BK 1 B C E Q5 CN502B 1 2 OPEN/CLOSE G S4 PLAY SW810 C5O4A CD LID H 1 2 3 4 Figure 13-1 13 5 6
QT-CD700W SETTING METHOD FOR LASER LIGHT UP 1. In power OFF state, set the Function switch to ON, keeping to be pressed the "Stop" and "RANDOM" button at same time. After CD initialize finish, The CD TEST mode is set, and the LCD indicate to the total tracks of the disc . Release the PLAY button. The CD TEST mode is set when the LCD indicate to "1". Then out the above circuit. 2. In above TEST mode state, press once the PLAY button. The laser is light up when LCD indicate to "CD".
QT-CD700W NOTES ON SCHEMATIC DIAGRAM • 1. Tuner Resistor: ( To differentiate the units of resistors, such 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 ohm-type resistor. Besides, the one with “Fusible” is a fuse type. • ): AM mode : FM mode 2.
QT-CD700W C322 4.7u R302 180K C R103 R105 560 R104 560 E TAPE CN103A R C130 1u C129 182M RP-HEAD 2K2 C127 182M CN503B 1 2 3 C122 22U 4 C128 100u 5 12 12 11 11 10 10 9 9 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 P R77 10K R126 47 C110 222(M) G R120 47K T101 PL1004 C135 562(M) R CN7A 2 1 1 2 SW3 3 1 2 C320 SW1-D CD-RCH 3K9 3K9 562 R307 R306 C200 562 C100 4V3 D1 Q501 9014 R-CH FUNCTION SELECTOR SW502 R127 10K R111 10K 0.
QT-CD700W FM SIGNAL AM SIGNAL H C717 14.0 C5 220U L201 2 7.20 3 13.85 4 0 5 0.52 SPK402 R : 8 OHM 0 7 0 8 0.51 9 10 7.20 13.85 11 7.2 12 14.7 LED 2 CN502B 1 1 2 2 VOLTAGE SELECTOR SW651 FUSE 1 T1.25AL 250V T501 8.0V CD+8V 14.5V R413 56K D9A 1N4001 D8 1N4001 7 6.72V D403 1N4148 4.99V 4.32V Q406 9014 R411 5K1 D7 1N4001 Q407 9014 4.48V 4.32V D10 1N4148 8.0V R410 2K7 AC/DC SELECTOR 150 D772 14.
QT-CD700W C123A C1 1UF/50 A C107 104 R3B 100K C108A 100UF R2B 100K R4B 47K R1B 3.3M RFRPRFM 150P TZCRFM C121A 2200P C12 10 27K 4 VBIAS Tack Coil 47K 56K C103A GND 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 R112A 150K FE 103 R101A 91 MD R113 0 T- CC C 13 LD 14 ASY 15 AV C115 104 16 PC0 VDD T+ F- C114 0.22UF/50V R129A OPEN D SE 11 BTC 12 PD C111A 104 C113 R114 3.
QT-CD700W C127A 100UF/10 R301A 3K C132A 15P 15P C126A 1UF/50V VDD C131A CD-LCH R305A 560 PWC/W_REMOTE 46 R503A E C 2 1 IC201A BU24530-9A PIN NO VOLTAGE(V) PIN NO VOLTAGE(V) PIN NO VOLTAGE(V) 1K P11/SYNC 45 R16 0 P10/PLAY 44 A -0.8V 3 R24 1K R505A 10K 104 C502A L202 100uH C133A 100UF/10 104 C134A DVDD 48 RESETB 47 Q301 DTA124ESA C138 104 AMUTE 3.27V B R128A 220 X1 49 X0 50 DGND 51 LDAC0 53 AVDD3 52 RDAC0 55 C305A 4.7UF/50V CN8 3.
QT-CD700W A RD B BK PHONE1 RD BATTERY AC INPUT SOCKET Q6 E C B Q3 C516 WH SPK402 R-CH D504 D503 Q503 B C E C520 C507 BK SPEAKERS BK Q7 Q504 RD MIC B C E E C B C403 C401 E 7 8 9 C E C B BK CB2 C511 C513 C509 C503 T501 POWER TRANSFORMER BK SPK404 C514 CN501A 1 IC3 C6 RD C510 5 6 CB1 VOLTAGE SELECT SPK403 AC220-240V AC110-127V C5 4 SPK401 L-CH AC-1 L7 C524 CN6A RD BK BK WH L6 BAT+ AC22 AC11 C512 1 2 3 D9 D RD BK 2 VCC+ 1 2 3 4 AC1 1 2 3 4 10 11
QT-CD700W CD MECHANISM DECK PICKUP UNIT SPINDLE MOTOR M702 SW702 PICKUP IN CNP803 CN2 3 4 CN2 Q601 2 3 4 1 2 3 4 GREEN BL BLUE VI VIOLET GY GRAY WH WHITE FM-ANT 6 FM-ANT1 B C E E C B Q505A C114 C113 E C B Q503A Q502A C610 Q408 IC3 CF303 1 2 3 D4 5 C1 Q101A B C E D403 Q501 B C E E C B GND D7 1 C526 C507 Q502 D3 2 3 4 5 6 7 8 D505 CN503A L303 PVC1 L301 C313 CC5 C307 SW4 Q301 1 2 CN8 CN9A 1 2 3 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 KEY CD DOOR
QT-CD700W WAVEFORMS OF CD CIRCUIT RF: PIN64 OF IC 201A FE: PIN9 OF IC 201A CH_R: PIN55 OF IC 201A TE: PIN60 OF IC 201A TD: PIN21 OF IC 201A FD: PIN19 OF IC 201A SLED: PIN23 OF IC 201A CH_L:PIN53 OF IC 201A NO DISC FOCUS SEARCH (POWER ON) 1 RF PIN64 1 FE PIN9 2 3 NO DISC FOCUS SEARCH (DOOR CLOSE) RF PIN64 2 3 FD PIN19 FE PIN9 FD PIN19 TCD-782 TNO-02 PLAY BACK FOCUS SEARCH_TOC READ 5 CH_R PIN55 6 CH_L PIN53 1 RF PIN64 4 TE PIN60 2 FE PIN9 3 FD PIN 19 STOP-PLAY 1 4 STOP-PLAY RF PIN64
QT-CD700W X1 49 X0 50 DVDD 48 RESETB 47 PWC/W_REMOTE 46 3 BD 4 VBIAS P11/SYNC 45 IC201A BU24530-9A 5 E 6 6 P10/PLAY 44 P03/PRO_LED 43 P02/MMUTE 42 7 AGND1 8 FEN P01/LID 41 9 FE0 P00/INNER 40 10 PKC SEG6/AMUTE 39 11 BTC CCOM1/SEG5 38 COM0/SEG4 37 3 7 SEGG/2 35 SEGF/1 34 SEGE/0 33 SEGD/COM3 32 31 SEGC/COM2 30 SEGB/COM1 29 SEGA/COM0 28 LON SEG.
QT-CD700W TROUBLESHOOTING (CD SECTION) When the CD does not function The CD section may not operate when the objective lens of the optical pickup is dirty. 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 trouble shooting instructions. “Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup lens.
QT-CD700W * The CD function will not work. The CD operating keys don't work. Yes Check the power supply, 16.93 MHz clock , and reset terminal. Yes Check the pickup-in limit switch position. Yes Check the Focus system. * Laser failure IC +3.3V applied to the emitter of Q601. NO Check the PWB pattern or Q601. NO Check the peripheral parts of IC 601 and Q601. NO Check the PWB pattern between collector of Q601 and pin 48 of IC201A. NO Check the peripheral parts of IC 201A.
QT-CD700W * Focus failure Does the optical pickup move up and down when the disc is removed? Check as stated in item "FOCUS SERVO SAWTOOTH WAVE FAILURE" Yes Is the following waveform output at the pin 8 (FEN) of IC101A when the disc is set? Check the periphery of IC101A and CN1. Is it normal? No Yes Yes PIN 8 (FEN) The optical pickup is faulty. IC101A is faultly. * Focus servo sawtooth wave fallure. Is sawtooh wave output to the pin 19 (FDOUT) of IC101A ? No IC101A is faultly. Yes 1.5~2.
QT-CD700W * Spindle motor IC101A when the function is changed to "PLAY" from "STOP"? Check the procedure in "HE ERROR". If OK. IC101A is faulty. Yes Check the PWB pattern between pin 24 (CLVOUT) of IC101A and pins 5 and 6 of IC601. If OK. IC601 is faulty. Is above wave obtained between pins 1 and 2 of IC601? No Yes Is above wave obtained between pins 5 and 6 of CN2? Yes Check the PWB pattern between CN2 and IC601. No CN2 connection failure of optical pickup failure.
QT-CD700W * Slide motor operation failure. Is following slide feed signal output the pin 23 (SDOUT) of IC101A when UP/DOWN key is pressed after the CD TEST MODE is set? IC101A is faulty. No Yes FF REW SDOUT Is following slide feed signal input the pins 12 and 13 IC601 when UP/DOWN key is pressed after the CD TEST MODE is set? No Check the PWB pattern between pin 23 of IC101A and pins 12 and 13 of IC601.
QT-CD700W FUNCTION TABLE OF IC201A Terminal No.
QT-CD700W Terminal No. Terminal Name Analog/ Digital I/O Function Equivalent circuit 49 XI Digital I X'tal 16.9344MHz connecting (input) terminal 14 50 XO Digital - X'tal 16.
QT-CD700W PARTS GUIDE PORTABLE CD STEREO SYSTEM MODEL QT-CD700W CONTENTS "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.
QT-CD700W NO.
QT-CD700W NO.
QT-CD700W NO. PARTS CODE PRICE NEW PART RANK MARK RANK DESCRIPTION [8] INTEGRATED CIRCUITS IC1 IC3 IC101 IC201A IC601 92L28402111001 92L28408227020 92L28403308000 92L28424530000 92L28405826000 AN AK AH BA AM TA2111N HaiWei YD8227 HDIP12 BA3308 BU24530-9A BA5826FP AE 16.93MHz MIDAS AA AA AE AE AC AF AB AC AB AE AC AB AB AD AB AE AB AB AD AB AA AC AG AC AE AK AC AC AF AG AG AV AV AE AE AG AE AE AE AF AG #26L=180mmBLACK #26L=180mm RED 16 PIN WAFER, P=1.
QT-CD700W [11] CABINET PARTS S03 29 A 28 31 27 S10 24 32 33 34 B 30 25 23 35 26 S06 S08 21 26 39 S14 C S12 36 41 22 17 42 40 38 D S09 PCB-A2 47 49 51 46 48 50 S05 52 S05 57 53 45 S06 S06 S06 43 S01 E S02 17 S13 19 14 9 18 S06 54 S07 10 44 S11 PCB-A4 55 16 37 13 15 S04 56 PCB-A3 8 S15 12 7 11 6 S06 8 PCB-A1 9 59 F S07 10 20 58 58 3 G 2 4 5 S06 1 H Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanism.
QT-CD700W NO.
QT-CD700W NO. PARTS CODE PRICE NEW PART RANK MARK RANK DESCRIPTION [12] ACCESSORIES / PACKING PARTS 9 10 11 92L13508070020 92L20707041010 92L19407041010 AH AC AC POLYFOAM (R) PICK UP PROTECTIVE CARD POLYBAG (SET) [13] P.C.B.
QT-CD700W COPYRIGHT © 2004 BY SHARP CORPORATION 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 publisher.
