Sharp MD-S301MK, Service Manual

Page 1: ...used for after sales service only The contents are subject to change without notice 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 P...

Page 2: ...umption 7 W AC adaptor Output power RMS 10 mW 5 mW 5 mW 0 2 T H D Charging time Approx 3 5 hours When using the AC adaptor included with the unit Battery life Volume level VOL 15 The above values are the standard values when the unit is charged and used at an ambient temperature of 68 F 20 C The playing time when using an alkaline battery may be different depending on the type and manufacturer of ...

Page 3: ...hium lon Battery Compartment Remote control unit 1 Character Time Information Display 2 Disc Mode Indicator 3 Total Track Number Display 4 Track Number Indicator 5 Battery Indicator 6 Repeat Indicator 7 Random Indicator 8 Headphones Socket 9 Hold Switch 10 Play Mode Button 11 Volume Buttons 12 Bass Button 13 Display Button 14 Play Pause Button 15 Stop Power Off Button 16 Fast Reverse Fast Foward B...

Page 4: ...t power sources a rechargeable battery an AC adaptor an optionally available battery case AD S30BC and an optionally available car adaptor AD CA20X O P E N OPEN Mark To the DC IN 5V jack AC 120V 60 Hz OPEN OFF POWER 5 Insert securely all the way in 4 Checking the remaining amount of battery charge The remaining amount of battery charge is shown by the battery indicator on the remote control displa...

Page 5: ...s the remote control unit or the headphones plugged in Are you trying to play a MiniDisc with data on it instead of a MiniDisc containing music When the operation buttons are pressed the unit does not respond Is the unit in the safety mode Is the battery exhausted Is the remote control unit plug or the headphone plug inserted firmly Has condensation formed inside the unit Is the unit being influen...

Page 6: ...Important Do not wear your headphones when you are cross ing streets or near traffic Do not use your headphones while driving a motor vehicle it may create a dangerous traffic hazard and may be illegal Remember to obey all of the safety rules in your area Do not play the unit at a high volume Hearing experts advise against extended play at high vol ume levels If you experience ringing in your ears...

Page 7: ...epairing paydueattentiontoelectrostaticcharges of IC 1 Bottom Cover 1 Battery Cover A1 x1 7 1 2 Screw A2 x6 2 Top Cabinet 1 Screw B1 x4 7 1 2 Flexible PWB B2 x1 7 2 3 Main PWB 1 Screw C1 x1 7 2 2 Flexible PWB C2 x2 3 Soldering C3 x3 4 Mechanism Unit 1 Lift the back side and 7 3 remove in the arrow direction REMOVAL PROCEDURE STEP FIGURE Note Carefully handle the main PWB and flexible PWB So as to ...

Page 8: ...ve the screws B3 x 2 pcs 3 Remove the flex PWB soldering joint B4 x 3 places and remove the sled motor Note Be careful so that the motor gear is not damaged If the gear is damaged abnormal sound is emitted when searching is performed How to remove the spindle motor See Fig 8 1 1 Remove the flexible PWB solder joint A1 x 1 2 Remove the screws A2 x 3 pcs and remove the spindle motor When installing ...

Page 9: ...nd full lighting state press the button 2Initialization of normal mode setting BASS setting VOL setting etc 3EEPROM rewrite enable area updating and adjustment error setting all items are adjusted when power is turned on in the normal mode 4Change to standby state Preliminary automatic adjustment or EEPROM rewriting 1Short circuit TP435 and TP421 2Perform preliminary automatic adjustment or EEPROM...

Page 10: ... O F D H L Q 1 9 0 H L Q 2 9 0 H L S G 1 1 H L S O 0 0 H G Q 1 9 4 H G Q 2 8 A H G S G 1 1 H G S O 0 0 H D Q R 0 0 H Digital EQ setting C T O 4 7 H C T 1 D 0 H P W L 0 3 H R C O 1 B H R C 1 0 0 H D R E 6 E H D R 1 1 0 H D R 2 4 6 H I N 1 3 2 H I N 2 4 9 H I N E 6 E H C T 2 1 4 H C T 3 8 0 H C T 4 0 0 H C T 5 0 0 H C T 6 0 0 H C T 7 0 0 H H After measuring temperature set the value obtained from th...

Page 11: ...3 1 4 4 5 IC403 TC7W14FU INVERTER EEPROM IC402 S29L294A B B 8 8 11 14 86 88 B 9 23 24 36 81 IC401 IX2677AF SYSTEM MICROCOMPUTER 91 16 19 82 84 86 XL201 33 8688MHz SW401 HOLD SW SW901 DISC IN SW451 PLAY SKIP UP ENDEC AUDIO D ACONVERTER LASER MOTOR DRIVER 12 33 72 IC405 S80821LN RESET D402 B B 4 2 1 15 POWER DRIVE IC831 IC832 IC821 IC851 IC871 TK71325M POWER SUPPLY MICROCOMPUTER 4 2 3 5 SYSTEM MICRO...

Page 12: ...W454 V DOWN SW453 STOP SW452 S DOWN 6 5 4 3 2 1 6 5 4 3 2 1 NC P65 P66 P67 PO4 XT2 X2 NC P64 CIN WB EFM TCG A B E F XRT SYRDX SYWRX SYCS SYSD1 SYSD0 SYSD2 SYSD7 SYSD6 SYSD5 SYSD4 SYSD3 SPDRF FODRR FODRF SLDRF TRDRR TRDRF SYWRX SYSD6 SYSD2 SYSD4 SYSD3 SYSD5 SYRDX SYSD7 SYCS SYSD0 SYSD1 CIN SENSE FOK DINT DINT SENSE FOK XRT X176KO FODRF SPDRF SLDRF TRDRR TRDRF FODRR F B EFM TCG E WB A G G G G G G D ...

Page 13: ...RN4904 POWER SELECT CHARGE DRIVE 6 5 4 3 2 1 10K C871 0 47 R871 1K Q871 2SA1745 R851 100K R454 22K C401 10 6 3 IC871 TK71325M POWER SUPPLY MICROCOMPUTER R870 100K D861 1SS393 C865 1 R866 100K R865 100K IC863 TC7SL00FU START UP DRIVE 5 4 3 2 1 R421 1K R422 1K D402 1SS361 R401 330K C403 0 047 TP415 TP416 22K TP408 P413 L201 4 7µH TP220 TP412 IC405 S80821LN RESET 4 3 2 1 C856 1 R407 100K TP202 IC202 ...

Page 14: ... C111 C109 C110 C107 C106 C112 C113 R154 Q101 C161 C104 R101 C103 C102 C407 L202 C202 C204 1 5 10 15 20 70 75 76 80 85 90 95 100 65 60 55 25 26 50 51 30 35 40 45 L600 C608 C609 C611 L611 C622 L609 L608 C600 C203 C408 R501 R502 R506 R505 C508 C502 C507 C503 R702 C501 C504 1 8 9 10 15 16 5 C706 D402 C741 C401 IC871 C851 L201 C201 R222 C211 C212 1 1 5 5 6 10 11 15 16 26 R825 IC833 C841 Q801 Q871 C871...

Page 15: ... L734 L733 Q851 L871 C846 C845 IC821 D841 D812 C833 R837 C835 C834 1 1 1 4 8 5 1 1 3 3 6 6 6 7 7 12 12 C840 D831 Q852 C865 D852 R854 C751 L736 R421 R713 D811 1 4 5 6 IC814 R813 Q812 1 1 3 3 1 3 4 4 6 6 4 6 Q811 R812 C811 R819 R814 D851 D814 R811 R846 C832 SW401 CN401 CN601 CN101 IC702 IC402 IC901 IC831 IC832 IC812 IC811 C911 C905 C906 C907 R904 R902 R901 1 10 11 15 20 5 KEY SWITCH FLEXIBLE UNIT BA...

Page 16: ...1 SPINDLE MOTOR MECHANISM FLEXIBLE PWB M902 SLED MOTOR SW901 DISC IN PICKUP UNIT 15 CN101 TO MAIN PWB CN601 P15 10 G TO MAIN PWB CN401 P15 10 A TO MAIN PWB REW PLAY FF SW455 SW454 SW452 SW451 SW453 OFF STOP KEY SWITCH FLEXBLE UNIT 221 9 P15 8 G VOLUME UP VOLUME DOWN FLEXIBLE PWB ...

Page 17: ...26V 1 77V 0V 2 51V 2 52V 0V 0V 1 25V 2 51V 0 43V 0V 0 31V 9 8 7 6 5 4 3 2 1 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 40 39 38 37 36 35 34 33 32 31 50 49 48 47 46 45 44 43 42 41 PIN NO VOLTAGE IC401 PIN NO VOLTAGE 51 64 63 62 61 60 59 58 57 56 55 54 53 52 68 67 66 65 69 80 79 78 77 76 75 74 73 72 71 70 90 89 88 87 86 85 84 83 82 81 100 99 98 97 96 95 94 93 92 91 9 8 7 6 5 4 3 ...

Page 18: ...ultimeter between such a section and the chas sis with no signal given Parts marked with are important for maintaining the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set The wiring diagram and the PWB drawing may be changed to refect improvements in the design without prior notice They may differ a little the unit you have...

Page 19: ...tor type VC MF Cylindrical type without lead wire VC MN Cylindrical type without lead wire VC TV Square type without lead wire VC TQ Square type without lead wire VC CY Square type without lead wire VC CZ Square type without lead wire VC J The 13th character represents capacity difference J 5 K 10 M 20 N 30 C 0 25 pF D 0 5 pF Z 80 20 If there are no indications for the electrolytic capacitors erro...

Page 20: ...FZZ J AC 10 µH Choke L201 VPBNN4R7M0000 J AC 4 7 µH L202 VPBNN1R0M0000 J AC 1 µH L501 RCILC0333AFZZ J AC 10 µH Choke L600 RCILC0331AFZZ J AC 2 2 µH Choke L601 604 RCILR0559AFZZ J AC 47 µH L608 RCILR0559AFZZ J AC 47 µH L609 RCILC0333AFZZ J AC 10 µH Choke L611 VPBNN1R0M0000 J AC 1 µH L701 702 RCILC0344AFZZ J AC Choke L710 RCILC0290AFZZ J AC Tip Solid Induction 200mA L711 RCILC0246AFZZ J AC 100 µH Ch...

Page 21: ...hm 1 16W R433 435 VRS CY1JB102J J AA 1 kohm 1 16W R451 VRS CY1JB123J J AA 12 kohms 1 16W R452 VRS CY1JB103J J AA 10 kohm 1 16W R454 VRS CY1JB223J J AA 22 kohms 1 16W R455 VRS CY1JB104J J AA 100 kohm 1 16W R501 502 VRS CY1JB562J J AA 5 6 kohms 1 16W R505 506 VRS CY1JB822J J AA 8 2 kohms 1 16W R601 VRS CY1JB563J J AA 56 kohms 1 16W R701 VRS CY1JB154J J AA 150 kohms 1 16W R702 VRS CY1JB334J J AA 330 ...

Page 22: ...202 4 JKNBZ2040AFSA J AD Knob Hold 202 5 PSHET0367AFZZ J AA Sheet Insulator Bottom Cabinet 203 GFTAB1347AFSA J AC Cover Battery 205 GCOVA2216AFSA J AD Cover Eject 206 QTANZ9147AFFQ J AC Terminal Rechargeable Battery 207 QTANZ9148AFFQ J AC Terminal Rechargeable Battery 208 JKNBK0526AFSA J AE Knob Eject 209 LANGK0932AFM1 J AM Main Frame Ass y 210 PCUSG0640AFZZ J AB Cushion Mechanism 211 PSHET0373AFZ...

Page 23: ...MD S301MK 5 A B C D E F G H 1 2 3 4 5 6 4 Figure 4 MD MECHANISM EXPLODED VIEW 10x3 1 18 17 16 15 2 8 8 1 M901 8 2 10 14 13 12 24 M902 11 10 7x2 22 6 3 4 5 9 19 SW901 23 20 21 8 3 PH901 ...

Page 24: ... 221 3 221 1 221 4 221 9 221 5 226 221 7 221 8 602 216 221 8 219 215 203 608 222 220 230 207 605 201 5 201 2 201 1 201 3 201 4 209 210 214x2 602 603 213 610 231 205 208 211 202 202 2 202 3 202 1 601x2 601x2 601x2 206 202 4 202 5 201 PWB A 601x2 224 229 601x2 602 602 217 224 223 217 3 0 1 232 5 ...

Page 25: ...AKZ0466AFZZ Service Card Operation Manual Quick Guide Pad AC Adaptor SPAKZ0489AFZZ AC Adaptor Polyethylene Bag Unit SSAKH0314AFZZ Carring Case Stereo Headphones Unit Connecting Cord RCA Type MD S301MK Not Replacement Item PACKING METHOD UNIT HOLD OFF Remote HOLD CANCEL Control SETTING POSITION OF SWITCHES AND KNOBS ...

Page 26: ...MD S301MK 8 M E M O 5 7 ...

Page 27: ...MD S301MK 9 M E M O M E M O 8 ...

Page 28: ...retrieval system or transmitted in any from or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher A9808 725NS HA J SHARP CORPORATION Communication Systems Group Quality Reliability Control Center Higashihiroshima Hiroshima 739 0192 Japan Printed in Japan SC ...