Sharp MD-SR60 Service Manual
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Sharp MD-SR60 Service Manual

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SPECIFICATIONS ................................................................................................................................................................. 2
NAMES OF PARTS ............................................................................................................................................................... 3
OPERATION MANUAL .......................................................................................................................................................... 4
QUICK GUIDE ........................................................................................................................................................................ 7
DISASSEMBLY ...................................................................................................................................................................... 9
REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................... 10
ADJUSTMENT ...................................................................................................................................................................... 11
NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 24
TYPES OF TRANSISTOR AND DIODE .............................................................................................................................. 24
BLOCK DIAGRAM ............................................................................................................................................................... 25
SCHEMATIC DIAGRAM ...................................................................................................................................................... 26
WIRING SIDE OF P.W.BOARD ........................................................................................................................................... 28
VOLTAGE ............................................................................................................................................................................ 31
WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 32
TROUBLESHOOTING ......................................................................................................................................................... 33
FUNCTION TABLE OF IC .................................................................................................................................................... 36
PARTS GUIDE/EXPLODED VIEW
SERVICE MANUAL
PORTABLE MINIDISC RECORDER
MODEL
CONTENTS
SHARP CORPORATION
MD-SR60(S)
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
MD-SR60
No. S7059MDSR60S/
Page

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  • Page 1: Table Of Contents

    MD-SR60 SERVICE MANUAL No. S7059MDSR60S/ PORTABLE MINIDISC RECORDER MD-SR60(S) MODEL • 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 SPECIFICATIONS ................................. 2 NAMES OF PARTS ................................3 OPERATION MANUAL ................................

  • Page 2: Specifications

    MD-SR60 FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS General Output level: Power source: DC 1.2V: Rechargeable Nickel-Metal Hydride Specified Maximum Load battery (AD-N70BT) x 1 output level impedance output DC 5V :...

  • Page 3: Names Of Parts

    MD-SR60 NAMES OF PARTS 1. Volume Up/Cursor Button 2. Volume Down/Cursor Button 3. Edit/Auto Mark/Time Mark Button 4. Display/Character Select Button 5. Remote Control/Headphones/Line Output Jack 6. Optical/Line Input Jack 7. Microphone Input Jack 8. Record/Track Mark Button 9. Stop/Power Off/Charge Button 10.

  • Page 4: Operation Manual

    MD-SR60 OPERATION MANUAL Battery Power Charging the rechargeable battery When the rechargeable battery is used for the first time or when you use it after a long period of dis- use, be sure to charge it fully. Slide the battery cover as far as it will go to the outside.

  • Page 5: Minidisc System Limitations

    Troubleshooting Many potential “problems” can be resolved by the owner without calling a service technician. If something seems to be wrong with this product, check the following before calling your authorized SHARP dealer or service center. PROBLEM CAUSE The unit does not turn on.

  • Page 6: Error Messages

    MD-SR60 Error Messages ERROR MESSAGES MEANING REMEDY The battery is not charged or there Charge the rechargeable battery or replace the alka- BATT EMPTY line battery (or use the AC adaptor for power). is no battery in the compartment. BLANK MD Nothing is recorded.

  • Page 7: Quick Guide

    MD-SR60 QUICK GUIDE Insert a MiniDisc Inserte un minidisco Quick Guide / Guía rápida Insert according to the direction arrow. Insértelo de acuerdo con la dirección de la flecha. PORTABLE MINIDISC RECORDER MODEL /MODELO MD-SR60 Quick Setup Guide Guía rápida de configuración Follow the setup procedure (1-3) before you use this unit.
  • Page 8 MD-SR60 Preparation for use Preparación para su utilización Recording / Grabación Check that the unit is connected to the stereo system. Release the HOLD switch on the bottom of the unit before use. The unit does not work if the switch is set to HOLD.

  • Page 9: Disassembly

    MD-SR60 DISASSEMBLY Cares before disassembling When assembling the machine after disassembling or (B1)x2 repair, observe the following requirements so as to ensure ø1.4x2mm safety and performance. Top Cabinet 1. Remove the batteries from the machine, and take out the mini-disc.

  • Page 10: Removing And Reinstalling The Main Parts

    MD-SR60 REMOVING AND REINSTALLING THE MAIN PARTS Remove the mechanism according to the disassembling meth- (A2)x3 ods 1 to 4. (See Page 9.) ø1.4x2.8mm Spindle Mechanism Flexible How to remove the spindle motor (See Fig. 10-1.) Motor PWB Solder joint 1.

  • Page 11: Adjustment

    MD-SR60 ADJUSTMENT Test disc MD adjustment needs two types of disc, namely recording disc (low reflection disc) and playback-only disc (high reflection disc). Parts No. Type Test disc High reflection disc MMD-110 (TEAC Test MD) 88GMMD-110 Low reflection disc MMD-212 (TEAC Test MD) 74-minute disc...
  • Page 12 MD-SR60 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 13 MD-SR60 5. NORMAL Mode • When the STOP button is pressed while the NORMAL menu appears, the mode changes to the TEST mode stop state. • Indication during operation Indication of memory capacity on main unit LCD [ ] + Level meter...
  • Page 14 MD-SR60 EEPROM (IC402) writing procedure 1. Procedure to replace EEPROM and write initial value of microcomputer in EEPROM (1) Replace EEPROM. (2) Refer to the latest EEPROM data list. (3) Press the Display button, ENTER button and Play button to start the test mode.
  • Page 15 MD-SR60 EEPROM DATA LIST (EEPROM version b) TEMP setting Sled setting Item display Set values Item display Set values T M _ _ Calculate values S L G _ S L 2 _ S L M _ Focus setting S L V _...
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  • Page 24: Notes On Schematic Diagram

    MD-SR60 NOTES ON SCHEMATIC DIAGRAM • Resistor: • The indicated voltage in each section is the one measured To differentiate the units of resistors, such symbol as K and by Digital Multimeter between such a section and the chas- M are used: the symbol K means 1000 ohm and the symbol sis with no signal given.

  • Page 25: Block Diagram

    MD-SR60 J702 MIC IN J801 (READY FOR J703 J703 Ni - MH Battery PLUG/IN DC IN J701 J701 HEADPHONES REMOTE (4~5.5V) OPTICAL IN LINE IN POWER) LINE CONTROL Dry Battery (1 pieces) 1.0-1.7V +1-2V Figure 25 BLOCK DIAGRAM – 25 –...

  • Page 26: Schematic Diagram

    MD-SR60 C112 C209 0.033 MAIN PWB-A 22P (CH) C111 C110 0.0033 C107 C109 TP139 R209 0.22 R203 0.012 TP202 C106 PLAYBACK SIGNAL L202 0.22 N.C. L201 RECORD SIGNAL L205 XL201 R106 L206 ROUT EFMAGI ADAGC 33.868MHz ADIPI ADIPO DIFF N.C.
  • Page 27 MD-SR60 TP451 DISPLAY R457 TP452 EDIT R455 TP453 P-MODE 5.6K R458 HKEY2 TP454 BASS DADATA R456 TP455 SKIP UP 8.2K ADDATA TP456 VOL DOWN R454 HKEY1 TP457 VOL UP DFCK TP458 ENTER BCLK R451 R452 R453 TP459 SKIP DOWN LRCK 5.6K...

  • Page 28: Wiring Side Of P.w.board

    MD-SR60 PWB-A(TOP VIEW) R296 HOLD Q250 C252 SW402 D251 R291 R293 BATTERY IC257 R253 TERMINAL,+ IC251 TP803 R292 R251 D281 R252 R257 Q251 TP171 IC255 TP106 C291 R255 R250 C454 C171 TP441 TP100 R272 C254 R464 R279 C172 L171 IC256...
  • Page 29 MD-SR60 PWB-A(BOTTOM VIEW) R841 C846 C848 C841 C847 F841 0.4A, D842 DC 60V C844 R850 R844 IC842 C845 SW403 R818 LID DETECTION C850 C202 IC841 C833 D831 L841 D832 IC202 C100 C842 C821 C835 D841 R202 L821 C843 C201 C353...
  • Page 30 MD-SR60 Magnetic Head Flexible PWB (23) M901 Spindle Motor Optical Pickup Unit (15) Magnetic Head (21) SW902 Disc Protect Mechanism Flexible PWB (8) PH901 CN601 Photo TO MAIN PWB Interrupter P28 1-E M902 CN101 Sled Motor TO MAIN PWB P28 1-C...

  • Page 31: Voltage

    MD-SR60 VOLTAGE IC101 IC201 IC601 IC353 IC401 IC501 VOLTAGE PIN VOLTAGE PIN VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE 0.71V 0.84V 2.73V 2.34V 0.71V 2.48V — — 0.71V 1.22V — 0.29V 2.35V — 0.71V — 2.32V 1.24V 1.24V — 2.32V —...

  • Page 32: Waveforms Of Md Circuit

    MD-SR60 WAVEFORMS OF MD CIRCUIT Stopped 1994 / 12 / 15 22:54:19 Stopped 1994 / 12 / 16 00:24:17 Stopped 1994 / 12 / 16 01:03:40 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 33: Troubleshooting

    MD-SR60 TROUBLESHOOTING It is advisable to use the TEST mode (refer to Error Data Display Mode, P19) 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 34 MD-SR60 • Abnormal display Is waveform output from CN482 pins 6 to 8? Is waveform output from IC401 pins 9,11,13? Are the pin 4 (VCC) and pin 5 (GND) normal? Check between IC401 and Check the periphery of IC401. CN482.
  • Page 35 MD-SR60 • 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 43? Does waveform appear on IC901 pins 1, 2 and 23? L608, IC201, IC901, CN601 and flex, etc.

  • Page 36: Function Table Of Ic

    MD-SR60 FUNCTION TABLE OF IC IC401 RH-iX0341AWZZ: System Microcomputer (IX0341AW) (1/3) Port Name Terminal Name Input/Output Function Pin No. P12/TCLKA Input Track cross signal/focus drive detection TCLKB SPIN Input Spindle motor FG pulse detection input INNSW Input Mechanism inner SW position detection input...
  • Page 37 MD-SR60 IC401 RH-iX0341AWZZ: System Microcomputer (IX0341AW) (2/3) Port Name Terminal Name Input/Output Function Pin No. Input Operation mode selection input 1 _PLAY Input Unit PLAY button operation detection input WDTOVF WDTOVF Output Watch dog timer (not used) Input Operation mode selection input 2...
  • Page 38 MD-SR60 IC401 RH-iX0341AWZZ: System Microcomputer (IX0341AW) (3/3) System LSI expansion output port (LR37811) Port Name Terminal Name Input/Output Pin No. Function Remarks EXPORT0 LDCNT1 Output Recording head raising-lowering control output 1 See the separate table *3. EXPORT1 LDCNT2 Output Recording head raising-lowering control output 2 See the separate table *3.
  • Page 39 “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 40 MD-SR60 PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK COILS INTEGRATED CIRCUITS AC 10 µH L100 VPBNN100K0000 IC101 VHIIR3R55//-1 AQ RF Signal Processor,IR3R55 AC 10 µH L171 RCILC0356AFZZ IC201 VHILR37811/-1 BB ENDEC/SERVO/ATRAC, L201,202 RCILC0353AFZZ AB Tip Impeder,100mA LR37811...
  • Page 41 MD-SR60 PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PARTS CODE RANK RANK AD 1 µF,16V C608 VCKYTQ1CB105K R204 VRS-CY1JB102J AA 1 kohm,1/16W AD 1 µF,10V C609,610 VCKYTV1AB105K R205 VRS-CY1JB334F AA 330 kohms,1/16W C622 VRS-CY1JB103J AA 10 kohm,1/16W R206 VRS-CY1JB274F AA 270 kohms,1/16W AB 1 µF,16V...

  • Page 42: Jack

    MD-SR60 PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK R727 VRS-CY1JB822J AA 8.2 kohms,1/16W MSPRP0925AFZZ Spring,Drive Screw R728 VRS-CY1JB102J AA 1 kohm,1/16W NGERH0603AFZZ AE Gear,Drive R729,730 VRS-CY1JB272J AA 2.7 kohms,1/16W LANGF1610AFZZ AC Bracket,Cancel R754 VRS-CY1JB154J AA 150 kohms,1/16W...
  • Page 43 MD-SR60 PRICE DESCRIPTION PARTS CODE RANK TCAUH0050AWZZ J AB Caution,Headphones TINSE0320AWZZ Operation Manual TINSZ0586AWZZ Quick Guide TLABR1127AWZZ Label,Bar Code UBAGC0003AWZZ J AD Battery Case UBAGC0006AWSA J AH Carrying Case UBATM0003AWSA J AR Battery,Nickel-Metal Hydride P.W.B. ASSEMBLY (Not Replacement Item) PWB-A 92LPWB3355MDSS J —...
  • Page 44 MD-SR60 502x2 508x2 (PH901) (SW902) 505x3 M901 M903 503x2 M902 Figure 5 MD MECHANISM EXPLODED VIEW – 5 –...
  • Page 45 MD-SR60 MD MECHANISM 225x2 601x2 PWB-A 605x4 601x2 601x2 Figure 6 CABINET EXPLODED VIEW – 6 –...

  • Page 46: Packing Of The Set

    MD-SR60 PACKING OF THE SET Setting position of switches and knobs UNIT HOLD Remote Control HOLD CANCEL Operation Manual Remote Quick Guide Control Connecting Cord, Connecting Cord, RCA Type Optical Type Battery Battery Case Operation Manual Spacer SPAKZ0490AWZZ AC Adaptor...
  • Page 47 MD-SR60 — M E M O — – 8 –...
  • Page 48 MD-SR60 © 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 from or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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