Sharp LC-32M43U, LC-37M43U Schematic

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LC-32/37M43U

SERVICE MANUAL

No. S77L7LC32M43U

LCD COLOR TELEVISION

LC-32M43U

MODELS

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

LC-37M43U

OUTLINE

This model is based on the LC-32/37D42U and is changed some parts. This Service Manual covers the modifications alone. For the other points, refer to the LC-32/37D42U (No. S06X9LC32D42U) Service Manual.

CONTENTS

OUTLINE AND DIFFERENCES FROM BASE MODEL

OUTLINE.................................................................... i

LIST OF CHANGED PARTS...................................... i

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY

PRECAUTION........................................................... ii

PRECAUTIONS A PRENDRE LORS DE LA

REPARATION ...........................................................iii

PRECAUTIONS FOR USING LEAD-FREE

SOLDER .................................................................. iv

PRECAUTIONS IN SERVICING THE HDCP-

KEY ROM.................................................................. v

CHAPTER 4. PRINTED WIRING BOARD ASSEMBLIES

[1] MAIN Unit...............................................................4-1

CHAPTER 5. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIAGRAM.........5-1

[2] MAIN Unit...............................................................5-2

Parts Guide

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS .................................................1-1

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL ..........................................2-1

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS ........................................................3-1

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.

This document has been published to be used for after sales service only. The contents are subject to change without notice.

LC-32/37M43U

OUTLINE AND DIFFERENCES FROM BASE MODEL

Service Manual

OUTLINE

This model is based on the LC-32/37D42U and is changed some parts. This Service Manual covers the modifications alone. For the other points, refer to the LC-32/37D42U (No. S06X9LC32D42U) Service Manual.

LIST OF CHANGED PARTS

Ref. No. Description LC-32/37D42U LC-32/37M43U Note

PRINTED WIRING BOARD ASSEMBLIES

R/C, LED Unit DUNTKD909FM02 ← — KEY Unit DUNTKD910FM02 ← — MAIN Unit DUNTKD862FM04 DUNTKD862FM10 Some parts changed AV TERMINAL Unit DUNTKD999FM04 ← — POWER Unit RDENCA198WJQZ RDENCA252WJQZ —

LCD PANEL

32” LCD Panel Module Unit R1LK315T3LZ4BX R1LK315T3LZ50Z — 37” LCD Panel Module Unit R1LK370T3LZ5BW R1LK370T3LZ6CZ —

MAIN Unit Please refer to a Parts list

CABINET AND MECHANICAL PARTS Please refer to a Parts list

PACKING PARTS AND ACCESSORIES Please refer to a Parts list

i

LC-32/37M43U

SAFETY PRECAUTION

Service Manual

IMPORTANT SERVICE SAFETY PRECAUTION

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

CAUTION: FOR CONTI N U E D PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE.

F001 (250V 4A)

• Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.

• Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor.

All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.)

Any reading of 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

DVM

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

Before returning the receiver to the user, perform the following safety checks:

3. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the chassis and other metal parts in the receiver.

4. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc.

5. To be sure that no shock hazard exists, check for leakage current in the following manner.

• Plug the AC cord directly into a 110 ~ 240 volt AC outlet.

• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

TO EXPOSED METAL PARTS

AC SCALE

1.5k ohm 10W

0.15µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

SAFETY NOTICE

Many electrical and mechanical parts in LCD color television have special safety-related characteristics.

These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc.

Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features

are identified by " " and shaded areas in the Replacement Parts List and Schematic Diagrams.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

For continued protection, replacement parts must be identical to those used in the original circuit.

The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire or other hazards.

ii

LC-32/37M43U

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.

•

AVERTISSEMENT

1.

N'entreprendre aucune modification de tout circuit. C'est dangereux.

2.

Débrancher le récepteur avant toute réparation.

PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE

F001 (250V 4A)

VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur, effectuer les vérifications suivantes.

Inspecter tous les faisceaux de câbles pour s'assurer que les fils

3. ne soient pas pincés ou qu'un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur.

4.

Inspecter tous les dispositifs de protection comme les boutons de commande non-métalliques, les isolants, le dos du coffret, les couvercles ou blindages de réglage et de compartiment, les réseaux de résistancecapacité, les isolateurs mécaniques, etc.

S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la

5. fuite de courant, de la facon suivante:

Brancher le cordon d'alimentation directem-ent à une prise de cou-

• rant de 110 ~ 240V. (Ne pas utiliser de transformateur d'isolation pour cet essai).

A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ 10 watts en parallèle avec un condensateur de 0.15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée à la terre.

•

Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour mesurer la chute de tension en travers de la résistance.

•

Toucher avec la sonde d'essai les pièces métalliques exposées qui présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson, etc.) et mesurer la chute de tension CA en-travers de la résistance. Toutes les vérifications doivent être refaites après avoir inversé la fiche du cordon d'alimentation. (Si nécessaire, une prise d'adpatation non polarisée peut être utilisée dans le but de terminer ces vérifications.) La tension de pointe mesurèe ne doit pas dépasser 0.75V (correspondante au courant CA de pointe de 0.5mA). Dans le cas contraire, il y a une possibilité de choc électrique qui doit être supprimée avant de rendre le récepteur au client.

DVM

ECHELLE CA

1.5k ohm 10W

µ

F

0.15

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

BRANCHER A UNE TERRE CONNUE

AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les téléviseur ACL présentent des caractéristiques spéciales relatives à la sécurité, qui ne sont souvent pas évidentes à vue. Le degré de protection ne peut pas être nécessairement augmentée en utilisant des pièces de remplacement étalonnées pour haute tension, puissance, etc. Les pièces de remplacement qui présentent ces caractéristiques sont identifiées dans ce manuel; les pièces électriques qui présentent ces particularités sont identifiées par la marque " " et hachurées dans la liste des pièces de remplacement et les diagrammes schématiques.

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Pour assurer la protection, ces pièces doivent être identiques à celles utilisées dans le circuit d'origine. L'utilisation de pièces qui n'ont pas les mêmes caractéristiques que les pièces recommandées par l'usine, indiquées dans ce manuel, peut provoquer des électrocutions, incendies, radiations X ou autres accidents.

iii

LC-32/37M43U

PRECAUTIONS FOR USING LEAD-FREE SOLDER

Employing lead-free solder

• “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.

Example:

Indicates lead-free solder of tin, silver and copper. Indicates lead-free solder of tin, silver and copper.

Using lead-free wire solder

• When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks.

As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 °C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

Soldering

• As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 °C which is higher than the conventional lead solder by 40 °C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition.

Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as required.

If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.

When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

• Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

PARTS CODE

ZHNDAi123250E BL J φ0.3mm 250g (1roll) ZHNDAi126500E BK J φ0.6mm 500g (1roll) ZHNDAi12801KE BM J φ1.0mm 1kg (1roll)

PRICE RANK

PART

DELIVERY

DESCRIPTION

iv

LC-32/37M43U

PRECAUTIONS IN SERVICING THE HDCP-KEY ROM

Applied part: HDCP-KEY ROM

IC8451 RH-iXB979WJQZY (updated ROM)

The HDCP-KEY ROM shall be protected and managed for its information inside. In servicing this ROM, therefore, take the following information protection/management measures.

1) When disposing of the component parts and PWBs, destruct the IC itself in a proper way.

(For repairing or replacing the component parts and PWBs as well as clearing those in stock)

2) In storing the component parts, protect and manage them against theft and disclosure.

(For storing the service parts, service units, etc.)

v

LC-32/37M43U

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

Item Model: LC-32M43U Model: LC-37M43U

LCD panel 32" Advanced Super View & BLACK TFT

Number of dots 3,147,264 dots (1366 768 3 dots)

TV Function

TV-standard (CCIR) American TV Standard ATSC/NTSC System

Receiving Channel

VHF/UHF VHF 2-13ch, UHF 14-69ch

CATV 1-135ch (non-scrambled channel only)

Digital Terrestrial Broadcast (8VSB)

Digital cable (64/256 QAM)

Audio multiplex BTSC System

Audio out 10W 2

Terminals Rear INPUT 1 AV in, COMPONENT in

INPUT 2 S-VIDEO in, AV in

INPUT 3 Audio in, COMPONENT in

INPUT 4 HDMI in with HDCP

INPUT 5 Audio in, HDMI in with HDCP

INPUT 6 15 pin mini D-sub, Audio in (Ø 3.5 mm jack)

ANTENNA 75 Unbalance, F Type 1 for Analog (VHF/UHF/CATV) and Digital (AIR/CABLE)

DIGITAL AUDIO OUTPUT

OUTPUT Audio out

OSD language English/French/Spanish

Power Requirement AC 110-240 V, 50/60 Hz

Power Consumption 148 W (0.9 W Standby) 172 W (0.9 W Standby)

Weight TV + stand 43.0 lbs./19.5 kg 50.7 lbs./23.0 kg

TV only 36.4 lbs./16.5 kg 43.0 lbs./19.5 kg

Dimension (W H D)

*2



TV + stand 31

TV only 31

Operating temperature 32°F to 104°F (0°C to 40°C)

*1

Emergency alert messages via Cable are unreceivable.

*2

The dimensional drawings are shown on the inside back cover.

As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in individual units.

LCD (Screen size 31

2-69ch

*1

1-135ch (non-scrambled channel only)

Optical Digital audio output 1 (PCM/Dolby Digital)

11

/322313/64937/64inch 3561/642527/321135/64inch

11

/322059/64353/64inch 3561/642337/64353/64inch

++ +



Service Manual

1

/2" measured diagonally)



LC-32/37M43U

37" Advanced Super View & BLACK TFT LCD (Screen size 37" measured diagonally)







1 – 1

LC-32/37M43U

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

Part names

TV (Front)

TV (Rear/Top)

Service Manual

Remote control sensor OPC sensor

OPC indicator SLEEP indicator POWER indicator

HDMI terminal (INPUT 4)

HDMI terminal (INPUT 5)

PC IN terminals (INPUT 6)

Antenna/Cable in

AUDIO terminals (INPUT 5)

DIGITAL AUDIO OUTPUT terminal

INPUT 3 terminals

INPUT 2 terminals

INPUT 1 terminals

Channel buttons

(CH /)

Volume

buttons

(VOL /)

INPUT button

POWER button

AUDIO OUTPUT terminals

2 – 1

AC INPUT terminal

Part names

LC-32/37M43U

Remote control unit

114

2 3

4

5

6

7

8

9

10

11 23

12

13 27

15

16

17

18

19

20

21

22

24

25

26

1 TV POWER: Switch the TV power on or enters

standby.

2DISPLAY:Display the channel information. 3 SOURCE POWER: Turns the power of the external

equipment on and off.

4 External equipment operational buttons: Operate

the external equipment.

50_9: Set the channel. 6 (DOT): 7INPUT:Select a TV input source. (TV, INPUT 1,

INPUT 2, INPUT 3, INPUT 4, INPUT 5, INPUT 6)

8 VOL / : Set the volume. 9 SURROUND: Select Surround settings.

10 FREEZE: Set the still image. Press again to return to

normal screen.

11 EXIT: Turn off the menu screen. 12 SLEEP: Set the sleep timer. 13 AUDIO: Selects the MTS/SAP or the audio mode

during multi-channel audio broadcasts.

14 FUNCTION: Switches the remote control for TV,

CBL/SAT, VCR, DVD and AUDIO operation. Indicator lights up for the current mode.

* To enter the code registration mode, you need to press FUNCTION and DISPLAY at the same time.

15 LIGHT : When pressed all buttons on the remote

control unit will light. The lighting will turn off if no operations are performed within about 5 seconds. This button is used for performing operations in lowlight situations.

16 VIEW MODE: Select the screen size.

17 ENT:

18 FLASHBACK: Return to the previous channel or

19 CH / : Select the channel. 20 MUTE: Mute the sound. 21 MENU: Display the menu screen. 22 ////ENTER: Select a desired item on the

23 RETURN: Return to the previous menu screen. 24 FAVORITE CH

25 FAVORITE: Set the favorite channels. 26 CC: Display captions from a closed-caption source.

Jumps to a channel after selecting with the 0_9

buttons.

external input mode.

screen.

A, B, C, D: Select 4 preset favorite channels in 4 different categories.

While watching, you can toggle the selected channels by pressing A, B, C and D.

NOTE

When using the remote control unit, point it at the TV.

27 AV MODE: Select an audio or video setting.

(When the input source is TV, INPUT 1, 2 or 3: STANDARD, MOVIE, GAME, USER, DYNAMIC (Fixed), DYNAMIC. When the input source is INPUT 4, 5 or 6: STANDARD, MOVIE, GAME, PC, USER, DYNAMIC (Fixed), DYNAMIC)

2 – 2

LC-32/37M43U

QUICK REFERENCE

Attaching the stand

Before attaching (or detaching) the stand, unplug the AC cord from the AC INPUT terminal. Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from being damaged.

CAUTION

Attach the stand in the correct direction. Be sure to follow the instructions. Incorrect installation of the stand may result in the TV falling over.

Confirm that there are 9 screws (all the same 

1 3

size) supplied with the TV.

2

Set the post for the stand unit onto the box.

Attach the base to the post. Insert and tighten the 5 screws into the 5

holes on the bottom of the base.

Hex key

Screw

Insert the stand into the openings on the bottom of the TV.

Insert and tighten the 4 screws into the 4 holes on the rear of the TV.

Hex key

Screw

Soft cushion

NOTE

To detach the stand, perform the steps in reverse order.

2 – 3

Basic adjustment settings

Menu items for TV/INPUT 1/2/3 Menu items for HDMI/PC-IN

LC-32/37M43U

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced

Color Temp. Black I/P Setting Film Mode 3D-Y/C Monochrome Range of OPC

Reset

Treble Bass Balance Surround Reset

No Signal Off No Operation Off

Picture

Audio

Power Contr ol

Picture

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced

Color Temp. Black I/P Setting Film Mode Monochrome Range of OPC

Reset

Audio

Treble Bass Balance Surround Reset

Power Contr ol

No Signal Off No Operation Off

EZ Setup CH Setup Antenna Setup-DIGITAL Input Skip Input Label Parental CTRL Position Language Reset

Audio Only Digital Noise Reduction Input Select Output Select Color System Caption Setup Program Title Display Favorite CH

Audio Setup

Setup

Option

Digital Setup

Setup

Input Skip Input Signal Auto Sync. Input Label Fine Sync. Position Language Reset

Option

Audio Only Digital Noise Reduction HDMI Setup Output Select

NOTE

Some menu items may not be displayed depending on the selected input source.

2 – 4

LC-32/37M43U

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

Service Manual

LC-32M43U

(589)

64

/

13

23

(200)

8

/

7

59

9

23

(531)2

64

/

20

(58)3

32

/

(85)

64

/

31

279/16(700.0)

19

11

/32(796)

45

/64(500)

77/8(200)

(394.6)

64

/

35

15

(343)

2

/

1

13

45

19

/64(500)

9

/32(83) 353/64(97)

3

Unit: inch/(mm)

LC-37M43U

(656)

32

/

27

25

(200)

8

/

7

(599)

64

/

37

23

(57)

4

/

1

2

(85)

64

/

23

3

32

25

/64(822.6)

61

35

/64(913)

2135/64(547)

77/8(200)

(463.8)

64

/

17

18

(377)

32

/

27

14

5

4

/8(117)

37

/64(243)

9

2135/64(547)

353/64(97)

3 – 1

11

35

/64(293)

MEMO

LC-32/37M43U

3 – 2

LC-32/37M43U

MAIN Unit (Side-A)

LC-32/37M43U

CHAPTER 4. PRINTED WIRING BOARD ASSEMBLIES

Service Manual

[1] MAIN Unit

H

G

F

E

D

C

B

A

12345678910

4 – 1

LC-32/37M43U

10 11 12 13 14 15 16 17 18 19

4 – 2

LC-32/37M43U

MAIN Unit (Side-A Chip)

LUG1104

SC8703

L1501

L1502

L1504

L1503

D1525

Q1517

R1501

R1585

D1528

Q1521 Q1519

R1582

Q1506

R1555

Q1516

Q1508

R1558

R1544

D1514

D1526

R1633R1559

R1604

R1572

R1605

R1580

R1502

SC1501

C1596 R1616

L1506

C1551

C1599 R1611

L1507

C1543

L1508

R1636

R1632

C1544

R1607

L1509

R1608

IC1507

R1583

C1549

C1550

R1551

R1618

Q1505

D1511

R1505

R1606

Q1520

Q1507

R1595

Q1518

R1601

R1557

R1598

R1584

Q1525

R1519

D1523

D1527

R1599

SC1502

L1510

R1597

Q1524

L1511

L1512

L1513

IC1506

R2043

C2030

C1537

R1576

IC2009

Q1502

R1634

D1501

R1520

R1527

R1530

R1533

Q1501

R1516

R1531

C1536

R1524

R1523

IC1504

R1511

R1522

C1531

R1513

D1519

L1505

C1523

R1521

D1512

D1508

C1524

C1522

R1571

IC1503

FB1509

R1529

R1561

R1526

R1525

FB1505

C1641

SC1503

R1528

D1507

C1521

C1640

FB1506

C1529

R1566

Q1511

R1575

R1567

R1550

C1530

R1570

R1579

C1639

FB1508

C1527

R1564

Q1510

R1574

R1565

R1549

C1528

R1569

R1578

C1638

FB1507

C1525

R1562

Q1509

R1573

R1563

R1548

C1526

R1568

R1577

J1502

FB1502

FB1501

C1502

C1501

R1504

C1505

R1503

C1507

R1515 R1508 R1514 R1509

C

R

R9322

FL9305

R9329

IC9301

SC8101

R9330

FL9306

R9323

C8323

C8251

C8259

C8258

R8328

IC8301

R8329

C8257

R8331

C8256

C8255

C8254

R8314

R8315

C8260

C8324

C8252

C8265

C8264

R8313

R8332

IC8302

R8334

C8266

C8263

C8262

C8261

C8253

C9005

R9034

D9604

P9001

R9035

C9616

C9626

R1182

R1181

L9603

Q1513

C3344

C9615

IC3302

R3301

LUG1109

P2002

kame5

R3333

R3334

R3338

C3335

KOU1

C3336

C3326

C3308

C3311

C3312

C3327

C3316

C3328

C3330

kame1

FB3301

C3303

C3318

C3343

R3326

C3305

C3306

C3332

C3322

IC3304

R3331

R9002

R3318

C3324

C3304

R9001

C3321

R3337

C3337

C3333

C3307

C3338

R3335

C3334

C3315

R3319

C3313

C3309

C3310

C3314

C3329

R3320

R3312

C3345

R3309

R3310

R3311

X3301

R3306

C3302

FB3302

C3325

R3308

Q3301

R8137

R8138

R8140

R8139

R8173

R8120

R8118

R8124

R8122

R9033

R9032

R8197 R8198 R8199

R8141

C8210

C8109

C8110

C8111

C8112

C8211

C8113

C8107

C8212

C8104

C8214

R8209

R8191

X8101

R8185

IC8101

C8103

L8101

C8215

R8208

R8190

C8114

C1144

C8209

L1107

C1140

C1139

L1106

C1141

R1173

R1172

C1146

TP8110

R8155

R8156

TP8107

R8152

R8151

D8102

D8101

R8146

R8145

TP8102

TP8109

TP8104

TP8105

TP8112

TP8103

R8174

R9313

R8177

R8181

R8184

R8183

TP8101

TP8111

R9316

R9315

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FL2606

R2614

R2621

R1169

kame2

R1168

LUG1106

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LC-32/37M43U

J1502

FB1502

FB1501

C1502

C1501

R1504

C1505

R1503

C1507

R1515 R1508 R1514 R1509

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MAIN Unit (Side-B)

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MAIN Unit (Side-B Chip)

TL1128

TL1129

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TL1140

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TL1158

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TL1173

TL1170

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TL1141

TL1143

TL1145

TL1149

TL1153

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TL1159

TL1161

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TL1320

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LC-32/37M43U

TL1540

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C8196

FB8111

FB8103

C8140

C8194

C8178

C8127

R2655

R2635

R8158

FB8117

C8151

C2628

C8181

C8132

R8142

R8187

C8204

C8155

C8139

C8177

C8206

C8173

R8157

C2620

R8148

C8154

C8145

R8147

C8199

C8146

FB8104

R8179

C2619

TL8120

R8186

TL9258

R8207

C2622

R8203

C2621

R8201

R8211

R8218

R8219

R8205

R8206

R8104

R8103

R8107

R8106

R2633

R8195

R8215

R8216

R8220

R8192

R8194

R8116

TL9257

R2634

R8193

FL8104

R8109

R2604

R8111

R8110

R2641

R2642

TL8112

FL8101

TL9256

R8101

C2629

TL8109

TL9255

R2602

R2603

TL8111

TL8110

R8108

R8196

C8461

R8475

R8474

C8462

R8470

C8460

R9018

TL3308

TL3312

TL3316

TL8453

TL8455

TL3310

TL3314

R3328

R3327

R8457

C8452

TL3309

TL3313

TL8454

C3317

C3319

C3320

TL9247

TL9248

C3331

C8453

TL3311

TL3315

TL3307

R8456

R3316

R3317

R3314

C3323

TL9243

TL9249

C8451

C9004

TL9244

IC9001

R3330

R3329

TL9246

TL3306

TL9242

TL9245

TL9266

R9013

R9012

TL9265

TL9264

TL9252

TL9262

TL9259

TL9254

TL9263

TL9253

TL9261

R3325

TL9260

TL9251

TL3304

TL3305

R3336R3332

TL9267

FL3301

TL9269

kame4

TL9268

TL9250

kame3

FL2607

TL2608

R2622

TL2607

R2619

TL2606

FL2605

TL2605

TL2604

IC8451

TL2603

FL2603

TL2602

R2617

FB2609

TL2601

IC8454

TL2618

FB2610

TL2617

R2601

FB2611

TL2611

FB2612

R2646

R2647

C2636

C2633

R2605

R2650

R2657

R2628

R2656

TL2612

R2649

L2606

C2641

R2648

FB2613

TL2613

L2607

C2642

IC9706

L2608

L2609

C2639

FB2614

TL2614

L2610

R2651

C2638

C2640C2634C2643C2631

R2652

FL2601

R2626

R2653

TL2615

C2637

C2610

TL2616

R2627

TL2624

FL2602

FB2615

IC2601

C2626

C2627

TL2609

R2640

FB2605

C2617

C2625

FB2607

FB2606

C2618

TL8107

TL8116

TL8103

TL8106

TL8105

FB8601

TL8104

TL8118

TL8601

TL8117

R8603

R8604

FL8601

D8601

TL8602

FL8602

R8601

R8606

C8601

R8602

IC8601

TL8604

C8602

FB8602

TL8608

TL8603

R8610

R8611

R8612

R8605

TL8606

IC8602

TL8605

C8604

FB8603

TL8609

R8615

R8614

R8613

TL2610

FL2608

TL2619

C2614

FL2609

TL2620

C2615

FL2610

TL2621

C2616

R2616

R2615

TL2622

10 11 12 13 14 15 16 17 18 19

4 – 8

LC-32/37M43U

MEMO

4 – 9

LC-32/37M43U

CHAPTER 5. SCHEMATIC DIAGRAM

Service Manual

[1] DESCRIPTION OF SCHEMATIC DIAGRAM

1. VOLTAGE MEASUREMENT CONDITION:

1) The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.

2. INDICATION OF RESISTOR & CAPACITOR:

RESISTOR

1) The unit of resistance "Ω" is omitted.

(K=kΩ=1000Ω, M=MΩ).

2) All resistors are ± 5%, unless otherwise noted.

(K= ± 10%, F= ± 1%, D= ± 0.5%)

3) All resistors are 1/16W, unless otherwise noted.

CAPACITOR

1) All capacitors are µF, unless otherwise noted.

(P=pF=µµF).

2) All capacitors are 50V, unless otherwise noted.

CAUTION:

This circuit diagram is original one, therefore there may be a slight difference from yours.

SAFETY NOTES:

1) DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS.

2) SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.

IMPORTANT SAFETY NOTICE:

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.

AVIS DE SECURITE IMPORTANT:

LES PIECES MARQUEES " " ( ) SONT IMPORTANTES POUR MAINTENIR LA SECURITE DE L'APPAREIL. NE REMPLACER CES PIEDES QUE PAR DES PIECES DONT LE NUMERO EST SPECIFIE POUR MAINTENIR LA SECURITE ET PROTEGER LE BON FONCTIONNEMENT DE L'APPAREIL.

5 – 1

LC-32/37M43U

[2] MAIN Unit

•MAIN Unit-1/19

H

G

F

E

D

C

B

A

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5 – 2

LC-32/37M43U

10 11 12 13 14 15 16 17 18 19

5 – 3

LC-32/37M43U

•MAIN Unit-2/19

H

G

F

E

D

C

B

A

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5 – 4

LC-32/37M43U

10 11 12 13 14 15 16 17 18 19

5 – 5