Sharp MD-MT877, MD-MT877C 32

MD-MT877/MD-MT877C

MAIN PWB-A (TOP VIEW)

A

B

C

D

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G

1

IC251 R251

IC801 Q801

D801

R817

24

19

18

13

C251

Q261

Q804 3

2

R271

R806

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1

R812

Q254R821R256

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R272

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R264

R801

C817

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Q821

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1

R262

R261

R805

R804

R803

R882

R881

Q825

IC202

OPTICAL

R276

IC271

Q803

4

R814

R815

5

R802

P35 9-G

C253

R258

C272

R810

R807

PICKUP

R255

R275

R273C273

Q802

R808

Q805C881

R829

R816

R813

R254

C274R277 R278 Q806

Q807

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6

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R259

R822

R828

FLEXIBLE PWB

C830

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1

R431

CN101

C209

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R274

C270

C839IC431

R809

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2

CK114

XL201

C212

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1

4

1

R832

C431

FP59

C211

C201

R834

IC852

R831

D432

CK112

45

C860

CK111 22

1

IC822

R827 C857

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C876

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D431

R424

FP31

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CK113

R222

26

C827

R824

R823

R856R853

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R854

R402

C401

C165

R161

L103

R871

R425

C130

FP32

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C826 TP487A

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C856

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IC871

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IC201

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D831

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FP66

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C837

D822

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IC842

R406

R405

R407

70

TP201A

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IC401

C833 R408

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IC873

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C844

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MECHANISM

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FP67

TP105A

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C848

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P35 9-A

Q443

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TP411A

IC200 4

C603

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R461

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C203

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R442

R441

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IC404

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C604

C601

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3

IC402

3

R205

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C500

14

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C602 R413

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CN601

C210 R200

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C605

Q901

IC651

C511

IC771

CN451

R904

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1

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C905 17 15

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C454

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C652

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R207 C753

C910

IC601

D651 C357

IC351

LCD/KEY PWB

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P34 3-A

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IC354

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C911

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1

R731

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R908

C912

IC353

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Q711

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1

C766

C711 C721 C723

R723

R351

IC703

C760

C758

R906

C901

C292

C353

8

1

R761C712

R758

R905

R767

R757

C492

R711

L713

R728

R727

L702

R291

C351

C354

FLEXIBLE PWB

R768

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R720

R292

R361

C361

R719

R724

D351

D491

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C724

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L454

D495

D492

L491

R762

R712

L714

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C726

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SW401

5

C734 C733

R729

4

C725

L704C731

D494 12

4

2

EJECT

10

1

C291

L457

C491

C722

L712

L703

L453

R492

L456

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R725

R716

R715

C714

C713

D496

IC701

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3

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3

L458

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L711

Q721

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L452

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6

1

R714

13

1

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C703

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1

R703

R730

R726

R713

J703

J702

J701

REMOTE CONTROL/

MIC IN

OPTICAL/LINE IN

EARPHONES

: Through-hole where the top, bottom and +B patterns are connected.

H : Through-hole where the top, bottom and hround patterns are connected.

: Through-hole where the top and bottom patterns are connected.

• The numbers 1 to 15 are waveform numbers shown in page 37.

1

2

3

4

5

6

Figure 32 WIRING SIDE OF P.W.BOARD (1/4)

– 32 –

Contents

CONTENTS SPECIFICATIONS NAMES OF PARTS Remote control unit Remote control display panel Battery charger OPERATION MANUAL Checking Displays Page Page 1 Insert a MiniDisc Inserte un minidisco 2 Connect the AC adaptor Conecte el adaptador de CA 3 Connection Recording Grabación Playing Reproducción DISASSEMBLY REMOVING AND REINSTALLING THE MAIN PARTS How to remove the spindle motor (See Fig. 11-1.) How to remove the lift motor (See Fig. 11-2.) How to remove the sled motor (See Fig. 11-3.) How to remove the magnetic head (See Fig. 11-4.) ADJUSTMENT Entering the TEST mode Leaving the TEST mode Shipping setting method Test Mode Operation in each TEST mode Page EEPROM (IC402) writing procedure Procedure to replace EEPROM and write initial value of microcomputer in EEPROM 2. Temperature reference setting method EEPROM DATA LIST (EEPROM version C) Fucus setting Tracking setting Spindle setting Sled setting BASS setting ADJ.SET setting Digital EQ setting Control setting Page Page Page Page Page Page Page Page Page Page NOTES ON SCHEMATIC DIAGRAM TYPES OF TRANSISTOR AND DIODE -MT877/MD-MD MT877C Page Page Page Page Page Page VOLTAGE WAVEFORMS OF MD CIRCUIT TROUBLESHOOTING Preparations Page Page FUNCTION TABLE OF IC IC401 RH-iX0419AWZZ :SystemMicrocomputer (IX0419AW) (1/2) IC401 RH-iX0419AWZZ :SystemMicrocomputer (IX0419AW) (2/2) IC201 VHiLR378161-1 :Endec/Servo/Atrac(LR378161) System LSI expansion output port *1: List of TEST port settings *2: List of EMPH port settings *3: List of LDCNT port settings Page Explanation of capacitors/resistors parts codes INTEGRATED CIRCUITS TRANSISTORS DIODES COILS VIBRATORS RESISTORS OTHER CIRCUITRY PARTS MD MECHANISM PARTS CABINET PARTS PACKING PARTS (MD-MT877(S) Except for U.S.A./MD-MT877C(S) for Canada) ACCESSORIES P.W.B. ASSEMBLY (Not Replacement Item) OTHER SERVICE PARTS BATTEY CHARGER PARTS Page Page Page PACKING OF THE SET (MD-MT877(S)FOR U.S.A. ONLY) Page Page COPYRIGHT © 2001 BY SHARP CORPORATION