Sharp MD-MS701W Service Manual

Illustration: MD-MS701W

SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MS701W ONLY) ........................................................................... 2

BATTERY DISPOSAL (MD-MS702 ONLY) ............................................................................................................................ 3

SPECIFICATIONS ................................................................................................................................................................. 3

NAMES OF PARTS ............................................................................................................................................................... 4

OPERATION MANUAL .......................................................................................................................................................... 5

QUICK GUIDE (MD-MS702 ONLY) ........................................................................................................................................ 8

DISASSEMBLY ..................................................................................................................................................................... 10

REMOVING AND REINSTALLING THE MAIN PARTS ........................................................................................................ 11

ADJUSTMENT ...................................................................................................................................................................... 12

NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 30

BLOCK DIAGRAM ............................................................................................................................................................... 31

SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD ................................................................................................... 32

WAVEFORMS OF CD CIRCUIT .......................................................................................................................................... 43

TROUBLE SHOOTING ........................................................................................................................................................ 44

FUNCTION TABLE OF IC .................................................................................................................................................... 47

PARTS GUIDE/EXPLODED VIEW

PACKING OF THE SET (MD-MS702 ONLY)

SERVICE MANUAL

CONTENTS

SHARP CORPORATION

- 1 -

MD-MS701W

MD-MS702

• 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.

This document has been published to be used

for after sales service only.

The contents are subject to change without notice.

MD-MS701W/MS702

No. S1806MDMS701W

Page

Table of Contents

Summary of Contents for Sharp MD-MS701W

Page 1: Table Of Contents
Illustration: MD-MS701W CONTENTS Page SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MS701W ONLY) ................2 BATTERY DISPOSAL (MD-MS702 ONLY) ..........................3 SPECIFICATIONS ................................. 3 NAMES OF PARTS ................................4 OPERATION MANUAL ................................5 QUICK GUIDE (MD-MS702 ONLY) ............................
Page 2: Safety Precaution For Service Manual (Md-Ms701W Only)
MD-MS701W/MS702 SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MS701W ONLY) Precaution to be taken when replacing and servicing the Laser Pickup. The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements.
Page 3: Battery Disposal (Md-Ms702 Only)
Height: 29.4 mm (1-3/16") battery x 1) Depth: 81.5 mm (3-7/32") DC 5 V (AC adaptor) Weight: MD-MS701W: 216 g (0.48 lbs.) with DC 3V: Separately available battery rechargeable battery MD-MS701W: AC 110 - 240V, 50/60Hz MD-MS702: 219 g (0.49 lbs.) with...
Page 4: Names Of Parts
MD-MS701W/MS702 NAME OF PARTS Remote Control Unit 1. Synchro Recording Indicator 2. Character/Time Information Indicator SYNC RANDOM 3. Record Indicator TOTAL 4. Repeat Indicator: 5. Random Indicator 6. Disc Mode Indicator 7. Total Track Number Display 8. Track Number Indicator 9.
Page 5 MD-MS701W/MS702 – 5 –...
Page 6 MD-MS701W/MS702 – 6 –...
Page 7 MD-MS701W/MS702 – 7 –...
Page 8: Quick Guide (Md-Ms702 Only)
MD-MS701W/MS702 QUICK GUIDE (MD-MS702 ONLY) Quick-Guide PORTABLE MINIDISC RECORDER Guía rápida MD-MS702 Rechargeable battery power Connection Alimentación de la batería recargable Conexión Analog recording Digital recording Grabación analógica Grabación digital Recording side Lado de grabación Playback side Mark OPTI- Lado de reproducción...
Page 9 MD-MS701W/MS702 Playing a MiniDisc Reproducción de un minidisco Loading and playing a MiniDisc Inserción y reproducción de un minidisco Headphones Volume To interrupt playback: Auriculares Press the button during playback. Volumen For the left (L) For the right (R) To resume playback, press the button again.
Page 10: Disassembly
MD-MS701W/MS702 DISASSEMBLY Caution on Disassembly (A1)x2 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 1. Take the battery and minidisc out of the unit. (B1)x1 2.
Page 11: Removing And Reinstalling The Main Parts
MD-MS701W/MS702 REMOVING AND REINSTALLING THE MAIN PARTS Remove the mechanism according to the disassembling meth- (A2)x3 ods 1 to 3. (See Page 10.) ø1.4x2.8mm How to remove the spindle motor (See Fig. 11-1.) 1. Remove the solder joint (A1) x 1 of flex PWB.
Page 12: Adjustment
MD-MS701W/MS702 ADJUSTMENT Test disc MD adjustment needs two types of disc, namely recording disc (low reflection disc) and playback-only disc (high reflection disc). Type Test disc Parts No. High reflection disc MMD-110 (TEAC Test MD) 88GMMD-110 Lowreflection disc MMD-212 (TEAC Test MD)
Page 13 MD-MS701W/MS702 Operation in each TEST mode 1. AUTO1 Mode • When the STOP button is pressed while the AUTO1 menu appears or during automatic adjustment, the mode changes to the TEST mode stop state. At this time the adjustment value is not output.
Page 14 MD-MS701W/MS702 •Whenever the DISP button is pressed in the continuous playback mode, the indication changes as follows. * Pit section Continuous playback (SUBQ address indication) [ S Q Continuous playback (C1 error indication) [ C E Continuous playback (SUBQ address indication)
Page 15 MD-MS701W/MS702 72h : EEPROM data read check sum error 73h : Record head drive disabled (by EJECT lever) 82h : Power overvoltage detection 91h : Ambient temperature is higher that the allowable temperature. 12. INNER Mode • when the STOP button is pressed on the INNER menu (SQ______ ), the state is changed to the TEST mode STOP state.
Page 16 MD-MS701W/MS702 [2] Temperature measurement value correction table Ambient temperature Temperature correction Center temperature C ~ +16 - 03h + 15.0 C ~ +19 - 02h + 17.8 C ~ +22 - 01h + 20.7 ± 00h C ~ +25 + 23.6...
Page 17 MD-MS701W/MS702 -PROM 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 18 MD-MS701W/MS702 – 18 –...
Page 19 MD-MS701W/MS702 – 19 –...
Page 20 MD-MS701W/MS702 – 20 –...
Page 21 MD-MS701W/MS702 – 21 –...
Page 22 MD-MS701W/MS702 – 22 –...
Page 23 MD-MS701W/MS702 – 23 –...
Page 24 MD-MS701W/MS702 – 24 –...
Page 25 MD-MS701W/MS702 – 25 –...
Page 26 MD-MS701W/MS702 – 26 –...
Page 27 MD-MS701W/MS702 – 27 –...
Page 28 MD-MS701W/MS702 – 28 –...
Page 29 MD-MS701W/MS702 – 29 –...
Page 30: Notes On Schematic Diagram
MD-MS701W/MS702 NOTES ON SCHEMATIC DIAGRAM (CH), (TH), (RH), (UJ): Temperature compensation • Resistor: (ML): Mylar type To differentiate the units of resistors, such symbol as K and • The indicated voltage in each section is the one measured M are used: the symbol K means 1000 ohm and the symbol...
Page 31: Block Diagram
MD-MS701W/MS702 Figure 31 BLOCK DIAGRAM – 31 –...
Page 32: Schematic Diagram/Wiring Side Of P.w.board
MD-MS701W/MS702 P33 P34 MAIN PWB-A1 C112 0.033 C111 0.0033 R203 TP139 C109 C107 1/6.3 0.012 C131 C106 C211 330P(CH) 0.22/16 5P(CH) ROUT 48 47 46 45 44 43 42 41 40 39 38 37 ADAGC R106 CK111 ADIPI CK110 XL201 ADIPO 33.8688MHz...
Page 33 MD-MS701W/MS702 TP451 VOL UP TP452 VOL DOWN SKIP DOWN TP453 DADATA R456 R455 R457 TP454 SKIP UP ADDATA 5.6K 8.2K R458 HKEY2 TP455 ENTER DFCK TP456 EDIT R203 BCLK TP457 DISPLY LRCK TP458 C-MODE HREC TP459 C211 ADPON 5P(CH) HSTOP...
Page 34 MD-MS701W/MS702 Figure 1 is contents to Serial No.712xxxxx. P32 P33 Figure 2 is contents for change from Serial No.801xxxxx. TP451 R762 R762 VOL UP 3.3K 3.3K C762 TP452 C762 VOL DOWN 1/6.3 1/6.3 SKIP DOWN TP453 R456 C761 R754 C761...
Page 35 MD-MS701W/MS702 IC202 IC101 IC201 IC401 IC402 IC501 IC601 IC651 NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE 0.7V 1.0V 1.5V 2.5V 0.95V 2.5V 2.5V 0.7V 2.5V 1.7V 1.1V 2.5V...
Page 36 MD-MS701W/MS702 DC IN J801 D800 BATTERY TERMINAL (+) R817 10 11 BATTERY TERMINAL (-) R818 C603 C874 C354 C353 Q352 R807 C805 L801 R808 C604 L600 R809 C808 C804 IC804 R801 C351 C806 R802 L604 L603 C803 D802 Q802 R805...
Page 37 MD-MS701W/MS702 P42 4-H FROM LCD FLEXIBLE PWB EXT. BATTERY TERMINAL C802 (220) TP801 MAIN PWB-A1 (BOTTOM) L887 TP805 TP806 TP803 15 14 P42 5-F P42 6-C Q801 FROM KEY FROM MECHA TP809 FLEXIBLE PWB (231) IC805 FLEXIBLE PWB (8) TP808...
Page 38 MD-MS701W/MS702 Figure 38 is contents to Serial No.712xxxxx. D491 L457 R767 R766 R768 R765 C752 IC703 J703 R757 C767 HEADPHONES C755 C762 R756 D494 Q711 C754 R761 C761 R714 C753 L491 R716 L702 R492 R715 C508 IC501 D492 C502 C713...
Page 39 MD-MS701W/MS702 Figure 39 is contents to Serial No.712xxxxx. JACK PWB-A2(BOTTOM) TP721 TP728 TP727 TP723 TP722 TP724 TP729 TP725 TP592 TP726 TP500 TP701 TP591 TP702 TP576 TP707 TP580 TP708 TP575 TP709 TP578 TP581 TP571 TP577 TP705 TP704 TP562 TP568 TP572 TP566...
Page 40 MD-MS701W/MS702 Figure 40 is contents for change from Serial No.801xxxxx. D491 L457 R767 R766 R768 R765 C752 IC703 J703 R757 C767 HEADPHONES C755 C762 R756 D494 Q711 C754 R761 C761 R714 C753 L491 R716 L702 R492 R715 C508 IC501 D492...
Page 41 MD-MS701W/MS702 Figure 41 is contents for change from Serial No.801xxxxx. JACK PWB-A2(BOTTOM) TP721 TP728 TP727 TP723 TP722 TP724 TP729 TP725 TP592 TP726 TP500 TP701 TP591 TP702 TP576 TP707 TP580 TP708 TP575 TP709 TP578 TP581 TP571 TP577 TP705 TP704 TP562 TP568...
Page 42 MD-MS701W/MS702 M901 M902 PICKUP UNIT (15) SPINDLE MOTOR SLED MOTOR M903 LIFT MOTOR SW901 DISC IN CN601 SW902 TO MAIN PWB DISC PROTECT P37 10-D MECHA FLEXIBLE PWB UNIT (8) CN101 TO MAIN PWB P37 8-G MAGNETIC HEAD FLEXIBLE PWB (23)
Page 43: Waveforms Of Md Circuit
MD-MS701W/MS702 WAVEFORMS OF MD CIRCUIT Stopped Stopped 1994 / 12 / 16 00:24:17 Stopped 1994 / 12 / 16 01:03:40 1994 / 12 / 15 22:54:19 CH1=1mV CH2=500mV CH3=5V CH4=2V 50ms/div CH1=2V CH2=2V CH3=2V CH4=2V 50us/div CH1=1V CH2=2V CH3=500mV 2ms/div...
Page 44: Troubleshooting
MD-MS701W/MS702 TROUBLESHOOTING It is advisable to use the TEST mode (refer to Error Data Display Mode, P15) indicating the causes of troubles before starting repair. Causes of operation errors (up to 10 errors) are recorded as error codes. This information is useful for repair.
Page 45 MD-MS701W/MS702 • Abnormal display Is waveform output from CNS 482 pins 1 to 3? Is waveform output from IC 401 pins 45 to 47? Are the pin7 (VCC) and pin 6 (GND) normal? Check between IC401 and Check the periphery of IC401.
Page 46 MD-MS701W/MS702 • The spindle motor fails to run.Does the head move Check the IC201 periphery. Does the waveform appear on the IC201 pins 24 and 25 after TEST mode AUTO2 completion and in this state? Replace. IC601 Does waveform appear on the IC601 pin 13? Does waveform appear on IC901 pins 1, 19 and 20? L608, IC201, IC901, CN601 and flex, etc.
Page 47: Function Table Of Ic
MD-MS701W/MS702 FUNCTION TABLE OF IC IC401 RH-iX2680AF03(IX2680AF):System Microcomputer (1/2) Pin No. Port Name Terminal Name Input/Output Function P120 SWP UP Output Asterisk input Output for pull-up 2*~7* P121~P126 P121~P126 Output Not used P127 Input Product brand ID input Input Positive power supply...
Page 48 MD-MS701W/MS702 IC401 RH-iX2680AF03(IX2680AF):System Microcomputer (2/2) Port Name Terminal Name Input/Output Function Pin No. LDON Output P.U. laser ON/OFF control output OPICGA Output P.U. detection sensitivity selection output RFLAT Output RF amp. IC data latch output RACLK Output RF/audio IC data clock output...
Page 49 “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 50 MD-MS702/MD-MS701W PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK INTEGRATED CIRCUITS COILS AC 10 µH IC101 VHIIR3R55//-1 AQ RF Signal,Processor,IR3R55 L100 VPBNN100M0000 AC 10 µH,Choke IC201 VHILR376481-1 BD ENDEC,LR376481 L171 RCILC0333AFZZ AC 0.47 µH IC202 RH-IX2567AFZZ BA 4M D-RAM,IX2567AF...
Page 51 MD-MS702/MD-MS701W PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK AD 3.3 µF,10V AD 10 µF,10V,Electrolytic,Tantalum C503,504 VCSAFA1AJ335M C886 VCSAFA1AJ106M AA 0.001 µF,50V AA 0.01 µF,25V C505,506 VCKYCY1HB102K C902 VCKYCY1EB103K AD 10 µF,6.3V,Electrolytic,Tantalum AD 3.3 µF,10V,Electrolytic C507 VCSAFA0JJ106M C903 RC-KZ1216AFZZ AC 1 µF,6.3V,Electrolytic...
Page 52 MD-MS702/MD-MS701W PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK R767,768 VRS-CY1JB102J AA 1 kohm,1/16W 8- 4(PH901) VHPGP1S93K/-1 AF Photo Interrupter,GP1S93K R801 VRS-CY1JB684D AA 680 kohms,1/16W MSPRP0881AFFJ AB Spring, R802 VRS-CY1JB394D AA 390 kohms,1/16W NGERH0596AFZZ AD Gear,Drive R803,804 VRS-CY1JB104J...
Page 53 AA Screw,ø1.4×2.0mm LX-CZ0107AFFF AA Screw,ø1.2×2.5mm LX-CZ0126AFFF AA Screw,ø1.4×2.0mm LX-BZ0877AFF3 AA Screw,ø1.4×1.5mm LX-BZ0805AFFN AB Screw,ø1.7×2.5mm LX-BZ0967AFFC AB Screw, PACKING PARTS [FOR MD-MS701W] SPAKA2679AFZZ AD Packing Add. SPAKC6563AFZZ AL Packing Case SPAKZ0465AFZZ Pad,AC Adaptor SPAKZ0475AFZZ Pad,Operation Manual SPAKZ0475AFZ1 Pad,Operation Manual [For Korea]...
Page 54 MD-MS701W/MS702 (SW902) (SW901) 503x2 M901 M902 M903 511x2 Figure 5 MD MECHANISM EXPLODED VIEW – 5 –...
Page 55 MD-MS701W/MS702 221-2 221-4 MD Mechanism MS702 Only 241x3 221-3 221-5 221-1 610x2 PWB–A2 MS702 MS701W 608x2 PWB–A1 608x2 202-4 202-1 202-2 610x2 202-3 610x2 Figure 6 CABINET EXPLODED VIEW – 6 –...
Page 56 Headphones Unit Packing Case SPAKC6561AFZZ : Not Replacement Item © COPYRIGHT 1998 BY SHARP COPORATION ALL RIGHTS RESERVED. SHARP CORPORATION Audio-Visual Systems Group Quality & Reliability Control Center No part of this publication may be reproduced, Higashihiroshima, Hiroshima 739-01, Japan stored in a retrieval system, or transmitted in Printed in Japan.

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Sharp MD-MS701W Service Manual

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