LG RT-21SB1RLX-T4 Manual de usuario

COLOR TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : CW81B

MODEL : RT-21SB1RLX-T4

MODEL : 21SB1RLX-T4

North/ Latin America http://aic.lgservice.com

Europe/Africa http://eic.lgservice.com

Asia/Oceania http://biz.lgservice.com

June., 2009

Printed in ChinaP/NO : MFL42115613

Internal Use Only

-18-

BLOCK DIAGRAM

LA76213

DVD

(FLAT OPT.)

DVD

(FLAT OPT.)

CPT DRIVE

FBT

185V

AFC

ABL

HEATER

B+

HDT

Collector

AV1(V R L)-IN

USOC

AUDIO B+

B+

(110 115V)

(17V 11V)

SMPS

TRANS

SCLSDA

EXT

Video-in

RGB

OUT

TUNER

V_DY

Rear_AV(1)

( PHONE)

Rear_AV(1)

( PHONE)

IC02

EEPROM

24C04 16

V-OUT

H-OUT

SPK1.

10.5V

Y(G) Cr(R) Cb(B)

SDA

SCL

LC75024E

A2/NICAM

MONO

SOUND AMP

LA42101

MONO

SOUND AMP

LA42101

INPUT

(100~240V)

STEREO,

Sound Max

SOUND AMP

LA42102(N)

STEREO,

Sound Max

SOUND AMP

LA42102(N)

R610

Option Par

IIC Bus Line

(Mono)

ML-OUT

546~48

STEREO

(~A43L)

MONO

(~A43K)

24V

ST-BY

TRANS

(1W Opt)

57 56 64

From

IC804

9V REG

IC04

ST-5V REG

From

IC804

IC661

5.1V

IC751

LA72730

(STEREO Opt)

IC751

LA72730

(STEREO Opt)

JA01

01+ '

Game Pack

(Game Opt)

HIC291

Game Pack

(Game Opt)

4,5,6 8 7

From USOC Video(Game)

Audio(Game)

SIF

out

3,6 11 1 4 7

2 5 9

LA72702

BTSC

IC701

LIN-TV

RIN-TV

19 20

R L Out

L-OUT

R-OUT

SAW

910

IF IN

Z102

10 11 13

SIF IN

3261

V-OUT (Mono)

17 18

2750

Ext R L

RGB

SCLSDA

27 26

33V

ST-5V

From

IC804

From

IC804

ST-5v

From

IC04

19 924

H-Vcc

5V VDD

3.3V Vcc

From

IC804

SOUND

R620

7.5V

R620

7.5V

IC803

Q402

MD1803

IC401

TDA8145

IC301

V-in FBP in

EW OUT L401

Vcc

EW-OUT

EW IN

From

IC803

SDA

SCL

SCLSDA

SPK L R

OUT

SCART

R,G,

833

TV IN(ST)

M_R L OUT(ST)

Monitor V OUT(ST)

SPK2.

Only for training and service purposes.

LGE Internal Use Only

-21-

EXPLODED VIEW

Only for training and service purposes.

LGE Internal Use Only

150

170

112

913

174

120

300

520

510

(option)

330

320

310

311

530

400

943

Many electrical and mechanical parts in this chassis have special safety-related characteristics.These

parts are identified by in the Schematic Diagram and EXPLODED VIEW.

It is essential that these special safety parts should be replaced with the same components as

recommended in this manual to prevent X-RADIATION,Shock, Fire, or other Hazards.

Do not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

Este manual sirve para los siguientes modelos

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