Sharp MD-S301MK Service Manual
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Sharp MD-S301MK Service Manual

Sharp MD-S301MK Service Manual

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SPECIFICATIONS ................................................................................................................................................................. 2
BATTERY DISPOSAL ............................................................................................................................................................. 2
NAMES OF PARTS ............................................................................................................................................................... 3
OPERATION MANUAL .......................................................................................................................................................... 4
QUICK GUIDE ........................................................................................................................................................................ 6
DISASSEMBLY ...................................................................................................................................................................... 7
REMOVING AND REINSTALLING THE MAIN PARTS ......................................................................................................... 8
ADJUSTMENT ....................................................................................................................................................................... 9
BLOCK DIAGRAM ................................................................................................................................................................ 11
SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD .................................................................................................... 12
VOLTAGE ............................................................................................................................................................................. 17
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................... 18
PARTS GUIDE/EXPLODED VIEW
SERVICE MANUAL
CONTENTS
SHARP CORPORATION
- 1 -
MD-S301MK
• 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 Service Manual is for the MD-S301MK, which is a minormodification
model of the MD-S301, This manual, therefore, describes only the changed
points from the service manual. Please refer to the MD-S301 service manual
(No. S1801MDS301//) together with this manual.
MD-S301
INSTALLING THE TOP CABINET .................................. 7
TEST MODE MENU ...................................................... 10
WAVEFORMS OF MD CIRCUIT ................................... 31
TROUBLESHOOTING ................................................... 32
FUNCTION TABLE OF IC ............................................. 36
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
MD-S301MK
No. S8865MDS301MK
Page
Page

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Summary of Contents for Sharp MD-S301MK

  • Page 1: Table Of Contents

    • 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 Service Manual is for the MD-S301MK, which is a minormodification model of the MD-S301, This manual, therefore, describes only the changed points from the service manual.

  • Page 2: Specifications

    MD-S301MK FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS General Output level: Power source: DC 3.6 V (rechargeable lithium-ion battery x 1) Maximum Load Specified DC 5 V (AC adaptor) output...

  • Page 3: Names Of Parts

    MD-S301MK NAMES OF PARTS Main unit 1. Volume Buttons: +, – 2. Stop/Power Off/Charge Button: :OFF 3. Power Indicator 4. Fast Reverse Button: 5. Play/Fast Forward Button: 6. 5V DC Input Socket 7. Eject Lever 8. Hold Switch 9. Battery Case Connection Terminals 10.

  • Page 4: Operation Manual

    MD-S301MK OPERATION MANUAL – 4 –...
  • Page 5 MD-S301MK – 5 –...

  • Page 6: Quick Guide

    MD-S301MK PORTABLE MINIDISC PLAYER Quick-Guide Guía rápida MD-S301 AC power Rechargeable battery power Alimentación de CA Alimentación de la batería recargable AC 120V, 60Hz Press the :OFF AC 120V, 60Hz To an AC outlet button to begin To an AC outlet 120V CA, 60Hz charging.

  • Page 7: Installing The Top Cabinet

    MD-S301MK DISASSEMBLY Caution on Disassembly (A2)x2 ø1x2.5mm Follow the below-mentioned notes when disassembling (A2)x2 the unit and reassembling it, to keep it safe and ensure Bottom Cover ø1x2.5mm excellent performance: 1. Take the battery and minidisc out of the unit.

  • Page 8: Removing And Reinstalling The Main Parts

    MD-S301MK REMOVING AND REINSTALLING THE MAIN PARTS Remove the mechanism according to the disassembling meth- (A2)x3 ods 1 to 4. (See Page 7.) ø1.4x2.8mm How to remove the spindle motor (See Fig. 8-1.) Spindle Motor 1. Remove the flexible PWB solder joint (A1) x 1.

  • Page 9: Adjustment

    MD-S301MK ADJUSTMENT Preparation for adjustment (use the low reflection disc on which music has been recorded) 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.

  • Page 10: Test Mode Menu

    MD-S301MK EEPROM DATA LIST (ROM Version : h) Focus setting Adjustment setting Item Setting Item Setting Item Item Setting Setting C O K F A T F F 1 T A T C A T F F 2 F H Z...

  • Page 11: Block Diagram

    MD-S301MK Figure 11 BLOCK DIAGRAM – 11 –...

  • Page 12: Schematic Diagram/Wiring Side Of P.w.board

    MD-S301MK C112 PLAYBACK SIGNAL C111 0.033 0.0033 TP145 TP139 C107 C211 C109 5P(CH) 0.012 C222 C106 0.22 R222 22P(CH) 48 47 46 45 44 43 42 41 40 39 38 37 CK111 C212 ROUT XL201 5P(CH) 33.868MHz ADIPI R102 EFMAGI...
  • Page 13 MD-S301MK MAIN PWB-A L701 TP205 IC202 R713 C715 47µH 0.083 TP724 TP204 L-CH L732 IX2567AF L-CH R-CH L731 TP723 TP203 C713 4BIT D-RAM R709 R-CH L733 TP722 TP206 C711 0.22 AGND I/O1 TP721 C716 0.0022 DGND R711 L736 0.083 I/O2...

  • Page 14: Remote Control

    MD-S301MK J701 REMOTE CONTROL/ HEADPHONES R801 R803 R806 C731 L701 IC801 J701 L702 R804 R805 IC802 C732 Q853 J801 C822 Q861 R868 IC852 C856 R869 L824 L721 L854 L711 L822 L821 C855 D854 C853 D856 L823 C857 C827 L501 C858...
  • Page 15 MD-S301MK P16 5 - C KEY SWITCH FLEXIBLE UNIT L733 TP722 TP721 C715 D811 L871 C713 TP728 R713 R709 TP806 R711 TP723 D814 TP726 C711 R712 C714 R732 R710 R813 R811 C712 D851 TP727 TP803 R731 Q812 R722 L736 TP724...
  • Page 16 MD-S301MK M901 SPINDLE MOTOR MECHANISM M902 FLEXIBLE PWB SLED MOTOR P15 10 - A TO MAIN PWB CN401 SW901 DISC IN VOLUME SW452 SW455 CN601 P15 10 - G SW451 TO MAIN PWB SW454 VOLUME PLAY/FF DOWN SW453 PICKUP UNIT (15)

  • Page 17: Voltage

    MD-S301MK VOLTAGE IC101 IC202 IC402 IC601 IC201 IC401 IC501 NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE 0.71V 0.94V 1.01V 2.52V 0.71V 2.53V 0.71V 1.28V 2.41V 2.51V 2.5V 0.71V 2.54V 1.27V...

  • Page 18: Notes On Schematic Diagram

    MD-S301MK 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 19 “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 20 MD-S301MK PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK INTEGRATED CIRCUITS AC 1 µH L202 VPBNN1R0M0000 AC 10 µH,Choke L501 RCILC0333AFZZ AC 2.2 µH,Choke IC101 VHIIR3R55//-1 AQ RF Signal,Processor,IR3R55 L600 RCILC0331AFZZ AC 47 µH IC201 VHILR376481-1 BD ENDEC,LR376481...
  • Page 21 MD-S301MK PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK AC 1 µF,10V C811 RC-KZ1168AFZZ R454 VRS-CY1JB223J AA 22 kohms,1/16W AB 0.1 µF,16V C812 VCKYCY1CB104K R455 VRS-CY1JB104J AA 100 kohm,1/16W AC 1 µF,10V C813 RC-KZ1183AFZZ R501,502 VRS-CY1JB562J AA 5.6 kohms,1/16W...

  • Page 22: Eject Lever

    MD-S301MK PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK SW453 ———— — Switch,Key Type [Stop] 221- 5 LANGK0933AFFW J AF Bracket,Operation Knob (Ref No.221-9 Cabinet 221- 7 PSHEZ0839AFZZ AC Sheet,Bracket Exploded View) 221- 8 PCUSG0643AFZZ AA Rubber,Preventive Vibration E SW454 ————...
  • Page 23 MD-S301MK 10x3 M901 (SW901) (PH901) M902 Figure 4 MD MECHANISM EXPLODED VIEW – 5 – – 4 –...
  • Page 24 MD-S301MK 221-2 601x2 MECHANISM 221-3 221-1 221-8 601x2 PWB-A 221-4 201-5 221-9 221-5 214x2 201-2 221-8 201-1 221-7 201-3 201-4 202-5 202-2 202-3 601x2 202-1 601x2 202-4 601x2 Figure 5 CABINET EXPLODED VIEW – 6 – – 5 – – 5 –...
  • Page 25 MD-S301MK PACKING METHOD SETTING POSITION OF SWITCHES AND KNOBS UNIT HOLD Remote HOLD CANCEL Control Carring Case Service Card Connecting Operation Manual Cord, RCA Type Quick Guide Remote Contol Pad, AC Adaptor SPAKZ0489AFZZ Rechargeable, Battery MD-S301MK Polyethylene Bag, Unit SSAKH0314AFZZ Packing Add., Unit...
  • Page 26 MD-S301MK — M E M O — – 8 – – 5 – – 7 –...
  • Page 27 MD-S301MK — M E M O — — M E M O — – 9 – – 8 –...
  • Page 28 MD-S301MK © 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.

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