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• 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.
SPECIFICATIONS ................................................................................................................................................................. 2
BATTERY DISPOSAL(USA ONLY) ........................................................................................................................................ 2
NAMES OF PARTS ............................................................................................................................................................... 3
OPERATION MANUAL .......................................................................................................................................................... 4
QUICK GUIDE ........................................................................................................................................................................ 6
DISASSEMBLY ...................................................................................................................................................................... 8
REMOVING AND REINSTALLING THE MAIN PARTS ......................................................................................................... 9
EEPROM DATA LIST ........................................................................................................................................................... 10
DIGITAL EQ SETTING ......................................................................................................................................................... 11
BLOCK DIAGRAM ................................................................................................................................................................ 13
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................... 15
SCHEMATIC DIAGRAM ...................................................................................................................................................... 14
VOLTAGE ............................................................................................................................................................................. 17
WIRING SIDE OF P.W.BOARD ............................................................................................................................................ 18
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................... 23
PARTS GUIDE/EXPLODED VIEW
SERVICE MANUAL
CONTENTS
SHARP CORPORATION
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MD-MS702MK
This Serivce Manual is for the MD-MS702MK, which is a
minormodification model of the MD-MS702, This manual,
therefore, describes only the changed points from the
service manual. Pleasa refer to the MD-MS702, service
manual (No. S1806MDMS701W) together with this manual.
MD-MS702
ADJUSTMENT ......................................................................... 12
WAVEFORMS OF MD CIRCUIT ............................................. 43
TROUBLESHOOTING ............................................................. 44
FUNCTION TABLE OF IC ....................................................... 47
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
MD-MS702MK
No. S7860MDMS702M
Page
Page
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Summary of Contents for Sharp MD-MS702MK
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Page 1: Table Of Contents
MD-MS702MK SERVICE MANUAL No. S7860MDMS702M MD-MS702MK This Serivce Manual is for the MD-MS702MK, which is a minormodification model of the MD-MS702, This manual, therefore, describes only the changed points from the service manual. Pleasa refer to the MD-MS702, service manual (No. S1806MDMS701W) together with this manual. -
Page 2: Specifications
MD-MS702MK FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS General Input sensitivity: Recording Reference input Input Power source: DC 3.6 V (rechargeable lithium-ion level level impedance battery x 1) DC 5 V (AC adaptor) MIC H 0.25 mV... -
Page 3: Names Of Parts
MD-MS702MK NAMES OF PARTS Remote Control Unit 1. Synchro Recording Indicator SYNC RANDOM 2. Character/Time Information Indicator TOTAL 3. Record Indicator 4. Repeat Indicator: 5. Random Indicator 6. Disc Mode Indicator 7. Total Track Number Display 8. Track Number Indicator 9. -
Page 4: Operation Manual
MD-MS702MK OPERATION MANUAL – 4 –... - Page 5 MD-MS702MK – 5 –...
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Page 6: Quick Guide
MD-MS702MK Quick-Guide PORTABLE MINIDISC RECORDER Guía rápida MD-MS702 Rechargeable battery power Connection Alimentación de la batería recargable Conexión Analog recording Digital recording Grabación digital Grabación analógica Recording side Lado de grabación Playback side OPTI- Mark Lado de reproducción CAL/LINE IN jack... - Page 7 MD-MS702MK Recording Important Grabación Do not wear your headphones when you are crossing streets or near traffic. Recording from a tuner or a CD (Manual recording) Recording from CDs or MDs (Synchro recording) Do not use your headphones while driving a Grabación de un sintonizador o disco compacto...
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Page 8: Disassembly
MD-MS702MK DISASSEMBLY (A1)x2 Caution on Disassembly Ø1.4x2mm Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure Pull (A1)x1 excellent performance: Ø1.4x2mm (A1)x1 1. Take the battery and minidisc out of the unit. -
Page 9: Removing And Reinstalling The Main Parts
MD-MS702MK REMOVING AND REINSTALLING THE MAIN PARTS Remove the mechanism according to the disassembling meth- (A2)x3 ø1.4x2.8mm ods 1 to 4. (See Page 8.) Spindle Motor How to remove the spindle motor (See Fig. 9-1.) 1. Remove the solder joint (A1) x 1 of flexible PWB. -
Page 10: Eeprom Data List
MD-MS702MK EEPROM DATA LIST TEMP setting Sled setting Item display Set values Item display Set values T M _ _ Calculate values S L G _ S L 2 _ BASS setting S L M _ Item display Set values... -
Page 11: Digital Eq Setting
MD-MS702MK – 11 –... - Page 12 MD-MS702MK Continued from the preceding page SKIP UP SKIP DOWN : Control setting 2 C T 7 : setting SKIP UP SKIP DOWN : Special mode selection data (unprotect area) S P M : setting M S L : Monitor selection data (unprotect area)
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Page 13: Block Diagram
MD-MS702MK Figure 13 BLOCK DIAGRAM – 13 –... -
Page 14: Schematic Diagram
MD-MS702MK P15 P16 MAIN PWB-A1 C112 0.033 PLAYBACK SIGNAL C111 0.0033 RECORD SIGNAL R203 TP139 C109 C107 0.012 C131 C106 C211 330P(CH) 0.22 5P(CH) IC101 : RF SIGNAL ROUT 48 47 46 45 44 43 42 41 40 39 38 37... -
Page 15: Md-R2 Notes On Schematic Diagram
MD-MS702MK TP451 TP452 TP453 DADATA R456 R455 R457 TP454 ADDATA 8.2K 5.6K HKEY2 R458 TP455 DFCK TP456 R203 BCLK TP457 LRCK TP458 TP459 HREC C211 ADPON 5P(CH) HSTOP TP460 DAPON HPLAY TP461 OPTCNT TP462 TP463 HKEY1 TP464 XL201 R452 R453... - Page 16 MD-MS702MK P14 P15 TP451 VOL UP TP452 VOL DOWN TP453 SKIP DOWN R455 R456 R457 SKIP UP TP454 5.6K 8.2K R458 HKEY2 TP455 ENTER TP456 EDIT DISPLY TP457 TP458 C-MODE HREC TP459 HSTOP STOP TP460 HPLAY TP461 PLAY TP462 TP463...
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Page 17: Voltage
MD-MS702MK VOLTAGE IC101 IC202 IC402 IC601 IC201 IC401 IC501 IC651 NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE 2.5V 0.7V 1.0V 1.5V 0.95V 2.5V 2.5V 0.7V 2.5V 1.7V 1.1V... -
Page 18: Wiring Side Of P.w.board
MD-MS702MK DC IN J801 MAIN PWB-A1(TOP) D800 R817 BATTERY TERMINAL(+) BATTERY TERMINAL(-) R818 C353 C603 C874 C354 R807 C804 C806 Q352 Q354 R808 C351 L600 L801 R809 C808 C604 IC800 C805 R801 R802 L604 L603 Q351 Q353 IC801 R804 C803... - Page 19 MD-MS702MK P22 4-H FROM LCD FLEXIBLE PWB TP801 C802 TP802 EXT. BATTERY TERMINAL (220) L887 L888 MAIN PWB-A1(BOTTOM) TP805 TP806 TP803 P22 6-C P22 4-F TP809 FROM MECHANISM FROM KEY IC805 FLEXIBLE PWB(8) FLEXIBLE PWB(231) Q801 TP666 TP662 R907 C903...
- Page 20 MD-MS702MK D491 L457 C752 IC703 J703 HEADPHONES R757 C762 D494 C758 C767 R753 R761 R714 C500 C508 L491 R713 C714 R492 D492 R715 C502 IC501 R502 L500 C713 R504 C503 C509 C504 J701 LINE R717 C701 C702 C505 C506 R702...
- Page 21 MD-MS702MK JACK PWB-A2(BOTTOM) TP721 TP728 TP727 TP723 TP722 TP724 L451 TP729 L452 TP725 TP592 C451 L456 TP726 TP500 TP701 TP576 TP591 TP702 TP707 TP580 TP575 TP708 TP578 TP581 TP709 TP577 TP571 TP705 TP704 TP568 TP572 TP586 TP566 TP569 TP703 TP584...
- Page 22 MD-MS702MK M901 M902 PICKUP UNIT (15) SPINDLE MOTOR SLED MOTOR M903 LIFT MOTOR SW901 DISC IN CN601 SW902 TO MAIN PWB DISC PROTECT P19 10-D MECHA FLEXIBLE PWB UNIT (8) CN101 TO MAIN PWB P19 8-F MAGNETIC HEAD FLEXIBLE PWB (23)
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Page 23: Notes On Schematic Diagram
MD-MS702MK NOTES ON SCHEMATIC DIAGRAM • The indicated voltage in each section is the one measured • Resistor: by Digital Multimeter between such a section and the chas- To differentiate the units of resistors, such symbol as K and sis with no signal given. - Page 24 “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the For U.S.A. only following information. Contact your nearest SHARP Parts Distributor to order. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For location of SHARP Parts Distributor, Please call Toll-Free;...
- Page 25 MD-MS702MK PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK INTEGRATED CIRCUITS PH901(8-4) VHPGP1S93K/-1 AF Photo Interrupter,GP1S93K COILS IC101 VHIIR3R55//-1 AQ RF Signal,Processor,IR3R55 IC201 VHILR376481-1 BD ENDEC,LR376481 AC 10 µH IC202 RH-IX2567AFZZ BA 4Mbit D-RAM,IX2567AF L100 VPBNN100M0000 AC 10 µH,Choke...
- Page 26 MD-MS702MK PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK AD 10 µF,6.3V,Electrolytic,Tantalum AE 47 µF,4.0V,Electrolytic, C507 VCSAFA0JJ106M C951,952 VCSAFE0GJ476M AC 1 µF,6.3V C508 RC-KZ1193AFZZ Tantalume AC 2.2 µF,16V C509,510 VCKYTV1CF225Z AE 15 µF,10V,Electrolytic,Tantalum RESISTORS C600 VCSAFB1AJ156M AC 1 µF,6.3V...
- Page 27 MD-MS702MK PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK R807 VRS-CY1JB273D AA 27 kohms,1/16W NSFTM0292AFFW J AC Shaft,Guide R808 VRS-CY1JB393D AA 39 kohms,1/16W MSPRT1604AFFJ AB Spring,Eject Lever R809 VRS-CY1JB104J AA 100 kohm,1/16W QPWBH0307AFZZ J AF Magnetic Head Flexible PWB...
- Page 28 MD-MS702MK PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK GFTAC3135AFSA AG Cover,MD LANGZ0335AFFW AB Bracket,Disc Guide PCUSG0638AFZZ AA Rubber,Preventive Vibration D PGIDM0256AFSA AB Guide (Left) PCUSG0647AFZZ AB Cushion,DC QPWBH0308AFZZ J AE Audio Flexible PWB PSPAZ0532AFZZ AC Spacer Mechanism...
- Page 29 MD-MS702MK (PH901) (SW902) (SW901) 502x3 503x2 M901 M902 M903 511x2 Figure 5 MD MECHANISM EXPLODED VIEW – 5 –...
- Page 30 MD-MS702MK 221-2 221-4 MD Mechanism 241x3 221-3 221-5 221-1 606x2 PWB–A2 605x2 228x2 PWB–A1 605x2 202-4 202-1 202-2 606x2 202-3 606x2 Figure 6 CABINET EXPLODED VIEW – 6–...
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Page 31: Packing Method (For Usa Only)
MD-MS702MK PACKING METHOD (FOR USA ONLY) SETTING POSITION OF SWITCHES AND KNOBS UNIT HOLD Remote HOLD CANCEL Control Optical Cable Carring Case Service Card Connecting Operation Manual Cord, RCA Type Quick Guide,Spanish Remote Contol Pad, AC Adaptor SPAKZ0489AFZZ Rechargeable, Battery... - Page 32 MD-MS702MK © COPYRIGHT 1998 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 publisher.