PLASMA TV MANUAL DE SERVIÇO

Internal Use Only website:http://biz.LGservice.com

PLASMA TV

MANUAL DE SERVIÇO

CHASSIS : PP81A

MODELO : 42PG20R

42PG20R-MA

ATENÇÃO

Antes de reparar este chassis, leia as PRECAUÇÕES DE SEGURANÇA contidas neste manual.

INPUT MENU ENTER VOL CH

CONTEÚDO

CONTEÚDO ............................................................................................................... 2

PRECAUÇÕES DE SEGURANÇA ............................................................................3

INSTRUÇÕES DE REGULAÇÃO ..............................................................................4

DIAGRAMA DE BLOCOS ........................................................................................12

VISTAS EXPLODIDAS............................................................................................. 14

DIAGRAMA ELÉTRICO................................................................................................

PAINEL DE CIRCUITO IMPRESSO .............................................................................

Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 2 -

LGE Internal Use Only

PRECAUÇÕES DE SEGURANÇA

ADVERTÊNCIA :

Antes de reparar este chassis., leia as “ PRECAUÇÕES DE RADIAÇÃO POR RAIO X “, “ INSTRUÇÕES

DE SEGURANÇA “ e “ AVISO SOBRE SEGURANÇA DE PRODUTOS “.

INSTRUÇÕES DE SEGURANÇA

1. Quando o receptor está em operação, são geradas tensões potencialmente altas em torno de 25-29 kV. Operar o receptor fora de seu gabinete ou com a tampa traseira removida pode causar perigo de choque elétrico.

(1) Ninguém deverá tentar reparar o aparelho sem estar familiarizado com as precauções que são necessárias quando se trabalha com um equipamento de alta tensão.

(2) Sempre descarregue o anodo do cinescópio ao terra para evitar o risco de choque elétrico antes de remover o conector do anodo (chupeta de alta tensão).

(3) Descarregue completamente o potencial do cinescópio antes de manuseá-lo. O cinescópio é de alto vácuo, e se quebrar, os fragmentos de vidro são expelidos violentamente.

2. S e queimar algúm fusível deste receptor de televisão, substitua-o por outro especificado na lista de peças elétricas.

3. Quando substituir placas de circuito impresso ou módulos, fixe seus fios nos terminais antes de soldar.

4. Quando substituir uma resistência de potência (resistor de película de óxido metálico) no painel de circuito impresso, mantenha os seus terminais com 10mm de distância do painel.

5. Mantenha os fios e cabos distantes de componentes de alta potência e de alta temperatura.

6. Este receptor deve operar em redes de 100 a 240 V AC.

7. Antes de devolver este aparelho ao cliente, faça uma verificação de fuga de corrente sobre as partes metálicas expostas do gabinete, tais com antenas, terminais, cabeças de parafusos, tampas de metal, alavancas de controle, etc., e certifique-se de que o aparelho funciona sem perigo de choque elétrico. Ligue o cabo de rede do aparelho diretamente a uma tomada de força de 100-240 V AC. Não utilize um transformador de isolação durante este teste.

Utilize um voltímetro de no mínimo 1KW por Volt de sensibilidade, da forma que se segue.

Quando a unidade estiver conectada ao AC, pulse o comutador primeiramente em “ON” (ligado) e em seguida em

“OFF” (desligado), meça desde um ponto de terra conhecido

(tal como um terminal de terra central da rede elétrica) a todas as partes metálicas expostas do televisor ( antenas, teclas metálicas, capas metálicas, alavancas de controle, etc..) especialmente qualquer parte metálica que possa oferecer um caminho ao chassis. Nenhuma medição de corrente elétrica deve exceder 0,5 mA. Repita a prova mudando a posição do pluque de rede na tomada AC.

Qualquer medição que não esteja dentro dos limites aqui especificados, representam risco potencial de choque elé trico que deve ser sanado antes que o aparelho retorne ao cliente.

2

-

WIRE CORD

Também prove com

CURRENT

TESTER

+-

exceder 0.5mA

0.5mA)

Terra

EAR TH

GROUND

AVISO SOBRE SEGURANÇA DE PRODUTO

Muitas partes elétricas e mecânicas neste chassis, tem características relacionadas com a segurança. Estas características frequentemente não são verificadas nas inspeções visuais e a proteção que proporcionam contra a RADIAÇÃO DE RAIO “ X “ nem sempre se obtem utilizando componente com maior potência ou de maior isolação. As peças que têm essas características de segurança são identificadas por uma marca [ ] impressa sobre o diagrama esquemático e a marca [

★

] impressa na lista de partes elétricas. Antes de substituir algum destes componentes, leia cuidadosamente este manual. O uso de peças de reposição que não tenham as mesmas características de segurança, como especificado na lista de material de reposição, pode gerar Radiação de

Raios “X”.



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3. ADC calibration

INSTRUÇÕES DE REGULAÇÃO

1. Application Range

This spec. sheet is applied to all of the PP81A Chassis.

2. Specification

(1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument.

(2) Adjustment must be done in the correct order.

(3) The adjustment must be performed in the circumstance of

25±5 c C of temperature and 65±10% of relative humidity if there is no specific designation.

(4) The input voltage of the receiver must keep 100~240V,

50/60Hz.

(5) Before adjustment, execute Heat-Run for 30 minutes at RF no signal.

(2) Confirmation

1) We confirm whether “0xB6(RGB)” address of EEPROM

“0xA2” is “0xAA” or not.

2) If “0xB6(RGB)” address of EEPROM “0xB2” isn’t “0xAA”, we adjust once more

3) We can confirm the ADC values from “0xB0~0xB5(RGB)” addresses in a page “0xA2”

[ Manual ADC process using Service Remocon. After enter

Service Mode by pushing “ADJ” key, execute “ADC Adjust” by pushing “

G

” key at “Adjust-RGB”.

3-2. COMPONENT input ADC

(1) Component Gain/Offset Adjustment

1) Convert to Component in Input-source

2) Signal equipment displays

Impress Resolution 720P

MODEL : 216 in Pattern Generator(720P Mode)

PATTERN : 33 in Pattern Generator( MSPG-925 SERISE)

3-1. PC input ADC

(1) Auto RGB Gain/Offset Adjustment

1) Convert to PC in Input-source

2) Signal equipment displays

Output Voltage : 700 mVp-p

Impress Resolution XGA (1024 x 768 @ 60Hz)

Model : 60 in Pattern Generator

Pattern : 54 in Pattern Generator (MSPG-925 SERISE)

[1/2 Black & White Pattern (Refer below picture)].

Adjustment pattern (COMPONENT)

3) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)

0x00 0x02 instruction

(2) Confirmation

1) We confirm whether “0xC8(720P)” address of EEPROM

“0xA2” is “0xAA” or not.

2) If “0xC8(720P)” address of EEPROM “0xA2” isn’t “0xAA”, we adjust once more

3) We can confirm the ADC values from “0xB9~0xBE(480i)/

0xC2~(1080i)” addresses in a page “0xA2”

<Fig. 1>

3) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)

0x00 0x02 instruction.



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4. PCB Assembly Adjustment Items

4-1. Option Adjustment Following BOM

Tool Option1

Tool Option2

Area Option

5. S/W Program Download

5-1. Profile

This is for downloading the s/w to the flash memory of the

IC803

5-2. Equipment

(1) PC

(2) ISP_tool program

(3) Download jig

5-3. Connection Structure

<Fig. 2>

* Profile: Must be changed the option value because being different with some setting value depend on module, inch and market

* Equipment : Adjustment Remote Controller

(1) Push the IN-START key in the Adjust R/C.

(2) Input the Option Number that was specified in the BOM, into the Shipping area.

(3) Select “Tool Option1/ Tool Option2/ Area Option” by using

D

/

E

(CH+/-) key, and press the number key(0~9) consecutively ex) If the value of Tool Option1 is 7, input the data using number key “7” (Fig. 2)

Caution: Don’t Push “IN-STOP” key after PCB assembly adjustment.

(4) Adjustment method

Before PCBA check, have to change the Tool option and

Area option

[ About PDP

After done all adjustments, Press IN-START button and compare Tool option and Area option value with its BOM, if it is correctly same then Change “RF mode” and then unplug the AC cable.

If it is not same, then correct it same with BOM and unplug AC cable.

For correct it to the model°Øs module from factory JIG model.

[

Don’t push The IN-STOP KEY after completing the function inspection.

5-4. Connection Condition

(1) IC name and circuit number : Flash Memory and IC803

(2) Use voltage : 3.3V (5 pin)

(3) SCL : 15 pin

(4) SDA : 12 pin

(5) Tact time : about 2min and 30seconds

6. Download Method (PCB Ass’y)

6-1. Preliminary Steps

(1) Connect the download jig to D-sub jack



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(2) Connect the PC to USB jack


6-2. Download Steps

(1) Execute ‘ISP Tool’ program in PC, then a main window will be opened

(2) Click the connect button and confirm “Dialog Box”.

7. EDID(The Extended Display

Identification Data) / DDC

(Display Data Channel) Download

[ Caution

- Use the proper signal cable for EDID Download

- Never connect HDMI & D-SUB Cable at the same time.

- Use the proper cables below for EDID Writing

7-1. Profile:

To be possible for plug and play

7-2. Equipment

(1) Adjusting PC with S/W for writing EDID Data.(S/W: EDID

TESTER Ver.2.5)

(2) A Jig for EDID Download

(3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub

15Pin cable, DVI to HDMI cable.

(3) Read and write bin file

Click “(1)Read” tab, and then load download file(XXXX.bin) by clicking “Read”.

7-3. Connection Structure

<Fig. 3> Connection Diagram of DDC Download

Caution: Never connect HDMI & D-SUB Cable at the same time.

7-4. EDID Data

(4) Click “Auto(2)” tab and set as below

(5) Click “Run(3)”.

(6) After downloading, check “OK(4)” message.

O

XGA EDID DATA

<Analog : 128bytes>



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<HDMI 1 : 256bytes>

<HDMI 2 : 256bytes>

O

Detail EDID Options are below ( ⓐ , ⓑ , ⓒ , ⓓ , ⓔ ) ⓐ

Product ID ⓑ

Serial No

=> Controlled on production line ⓒ

Month, Year

=> Controlled on production line: ex) Monthly: ‘11’ -> ‘0B’

Year: ‘2007’ -> ‘11’ ⓓ

Model Name(Hex) ⓔ Checksum

=> Changeable by total EDID data

1) 42inch Model

2) 50/60inch Model

<HDMI 3 : 256bytes>



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7-5. Preparation for Adjustment

(1) As above Fig. 3, Connect the Set, EDID Download Jig,,

PC & Cable

(2) Turn on the PC & EDID Download Jig. And Execute the

S/W : EDID TESTER Ver.2.5

(3) Set up the S/W option

Repeat Number : 5

Device Address : A0

PageByte : 8

(4) Push the “Write Data & Verify” button. And confirm “Yes”.

(5) If the writing is finished, you will see the “OK” message.

(4) Power on the Set

1) Sequence of Adjustment

1. DDC data of Analog-RGB

(1) Init the data

(2) Load the EDID data.(Open File).

(3) Set the S/W as below.

8. HDCP

(High-Bandwidth Digital Contents Protection)

(1) Connect D-sub Signal Cable to D-Sub Jack

(2) Input HDCP key with HDCP-key- in-program

(3) HDCP Key value is stored on Main M-STAR

IC(LGE6891DD) which is 0x80~0x90 addresses of

0x00~0x01 page(EEPROM MAP PAGE0~PAGE1 / START

:A080)

(4) Play the Equipment(DVD Player) included HDCP Key and confirm whether picture is displayed or not of using DVD

Player.

(5) HDCP Key value is different among the sets



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9. Adjustment of White Balance

9-1. Purpose and Principle for Adjustment of the Color Temperature

(1) Purpose: Adjust the color temperature to reduce the deviation of the module color temperature.

(2) Principle : To adjust the white balance without the saturation, Fix the one of R/G/B gain to C0 and decrease the others.

(3) Adjustment mode: Two modes of Cool and Warm

(Cool data is automatically calibrated by the Medium data)

9-2. Required Equipment

(1) Remote controller for adjustment

(2) Color Analyzer : CA-100+ or CA-210 or same product

- PLASMA TV(ch : 10)

(3) Auto W/B adjustment instrument(only for Auto adjustment)

- Do the white balance adjustment under the 10LUX

[ Notice: When using the Color Analyzer with PDP, recommend the CA-100 more than CA-210.

If CA-100 can not available, it is also good to use the CA-210.

(4) PC (for communication through RGB)

(5) Pattern Generator (MSPG-925FA etc.)

-Before white balance, press the ADJ key 2times and do the reset like Fig. 4

-To enter White-balance mode, press the ADJ key 2times.

[ Caution: System control Host should be “DDC” for adjustment.

(1) Enter the adjustment mode of the white balance

- Enter the white balance adjustment mode at the same time heat-run mode when pushing the power on by power only key

- Maintain the white balance adjustment mode with same condition of Heat-run

- Maintain after AC off/on in status of Heat-run pattern display

(2) Release the white balance adjustment mode

- Release the adjust mode after AC off/on or std-by off/on in status of finishing the Hear-run mode

- Release the Adjust mode when receiving the aging off command(F3 00 00) from adjustment equipment)

(3) Enter the adjust mode of white balance

- Enter the white balance adjustment mode with aging command(F3, 00, FF)

O

Color Temperature & Color Coordinates Setting

- When adjusting the Color Temperature, Color Analyzer CA-

210(Matrix should be corrected through CH10 of CS-1000) should be used. When CA-210 have used, it don’t need to fit the CH10.

- Adjust the Color Temperature based below adjustment color coordinates.

O

Target Value CA-210(LCD : CH 9, PDP : CH10), CA-100(PDP)

(Standard color coordinate and temperature when using the

CA-100+ or CA210 equipment)

<Fig. 4>

9-3. Connecting Diagram of Equipment for

Measuring

(For Automatic Adjustment)

O

Synchronization relation between PSM and CSM

PSM

Vivid

Mild

CSM

Cool

Warm



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O

DDC Adjustment Command Set

Adjustment

Adjustment

Adjustment

[ R/G/B GAIN max value : C0



- 10 -


9-4. Adjustment of White Balance for

Manual Adjustment

Adjustment mode: Two modes of Medium(Vivid) and Warm

(Cool data is automatically calibrated by the Medium data)

- Equipment : 1) Color analyzer(CA100+, CA210) should be used in the calibrated ch by CS-1000(.(LCD :

CH9, PDP : CH10)

2) Adjustment remocon

- For manual adjustment, it is also possible by the following sequence.

Operate the zero-calibration of the CA-100+ or CA-210, then stick sensor to the module when adjusting.

(1) Select white pattern of heat-run by pressing “POWER ON” key on remote control for adjustment then operate heat run longer than 15 minutes. (recommend)

(If not executed this step, the condition for W/B will be different)

(2) Changing to the AV mode by remote control.(Push front-

AV)

(3) Input external pattern(85% white pattern).

(4) Stick sensor to center of the screen and select each items

(Red/Green/Blue Gain and Offset) using

D

/

E

(CH +/-) key on R/C..

(5) Adjust R/ G/B Gain using F / G (VOL +/-) key on R/C.

(6) Adjust two modes of Medium(Vivid) and Warm as below figure.

(Fix the one of R/G/B and change the others)

1) Default : Medium(Vivid)

2) Push the “VOL +” key twice : Warm

Caution: Each PCB assembly must be checked by check JIG set.

(Because power PCB Assembly damages to PDP

Module, especially be careful)

10. POWER PCB Assy Voltage

Adjustment

(Va, Vs voltage Adjustment)

10-1. Test Equipment:

D.M.M 1EA

10-2. Connection Diagram for Measuring

Refer to Fig. 5

10-3. Adjustment Method

(1) Va Adjustment

1) After receiving 100% Full White Pattern, HEAT RUN.

2) Connect + terminal of D. M..M. to Va pin of P812, connect -terminal to GND pin of P812.

3) After turning VR901,voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top

(deviation; ±0.5V)

(2) Vs Adjustment

1) Connect + terminal of D. M..M. to Vs pin of P812, connect -terminal to GND pin of P812.

2) After turning VR951 401, voltage of D.M.M adjustment as same as Vs voltage which on label of panel right/top

( deviation ; ±0.5V)

[ Refer to the below case to know what value is fixed.

[CASE]

First adjust the coordinate much away from the target value(x, y).

1. x, y > target

1) Decrease the R, G.

2. x, y < target

1) First decrease the B gain,

2) Decrease the one of the others.

- In case of decreasing the x, decreasing the R : fix G

- In case of decreasing the y , decreasing the G : fix R

3. x > target , y < target

1) First decrease B, so make y a little more than the target.

2) Adjust x value by decreasing the R

4. x < target , y > target

1) First decrease B, so make x a little more than the target.

2) Adjust x value by decreasing the G

(7) When adjustment is completed, Exit adjustment mode using EXIT key on R/C.

<Fig. 7> Connection Diagram of Power Adjustment for Measuring



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DIAGRAMA DE BLOCOS



- 12 -




- 13 -


300

VISTAS EXPLODIDAS

IMPORTANT SAFETY NOTICE

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.

305

302

306

200

304

303

206

560

202

571

205

203

260

120

240

590

570 301

561

204

501

270

603

580

250

520

602

601

400

A2

201



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900











MAIN(TOP)

MAIN(BOTTOM)

CONTROL(TOP)

CONTROL(BOTTOM)

PRE-AMP(TOP)

PRE-AMP(BOTTOM)




LG Electronics Inc.

P/NO : MFL41859303

Depto de Assistência Técnica

Av. D. Pedro I, W7777 - Distrito Industrial

Piracangagua II - Taubaté - SP - Brasil

Cx. Postal 324 - CEP 12.010-970

Tel. : (012) 221-8555 Fax. : (012)221-8550

Jan., 2008

Printed in Korea

PLASMA TV MANUAL DE SERVIÇO

Internal Use Only website:http://biz.LGservice.com

PLASMA TV

MANUAL DE SERVIÇO

ATENÇÃO

Antes de reparar este chassis, leia as PRECAUÇÕES DE SEGURANÇA contidas neste manual.

CONTEÚDO

PRECAUÇÕES DE SEGURANÇA

ADVERTÊNCIA :

INSTRUÇÕES DE SEGURANÇA

AVISO SOBRE SEGURANÇA DE PRODUTO

3. ADC calibration

INSTRUÇÕES DE REGULAÇÃO

1. Application Range

2. Specification

(2) Confirmation

(1) Component Gain/Offset Adjustment

(1) Auto RGB Gain/Offset Adjustment

(2) Confirmation

4. PCB Assembly Adjustment Items

4-1. Option Adjustment Following BOM

5. S/W Program Download

5-1. Profile

5-2. Equipment

5-3. Connection Structure

5-4. Connection Condition

6. Download Method (PCB Ass’y)

6-1. Preliminary Steps

6-2. Download Steps

7. EDID(The Extended Display

Identification Data) / DDC

(Display Data Channel) Download

7-1. Profile:

7-2. Equipment

7-3. Connection Structure

7-4. EDID Data

7-5. Preparation for Adjustment

8. HDCP

9. Adjustment of White Balance

9-1. Purpose and Principle for Adjustment of the Color Temperature

9-2. Required Equipment

9-3. Connecting Diagram of Equipment for

Measuring

9-4. Adjustment of White Balance for

Manual Adjustment

10. POWER PCB Assy Voltage

Adjustment

10-1. Test Equipment:

10-2. Connection Diagram for Measuring

10-3. Adjustment Method

(1) Va Adjustment

(2) Vs Adjustment

DIAGRAMA DE BLOCOS

VISTAS EXPLODIDAS

LG Electronics Inc.

P/NO : MFL41859303

Depto de Assistência Técnica

Av. D. Pedro I, W7777 - Distrito Industrial

Piracangagua II - Taubaté - SP - Brasil

Cx. Postal 324 - CEP 12.010-970

Tel. : (012) 221-8555 Fax. : (012)221-8550

Jan., 2008

Printed in Korea

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