LG 42pj350r Diagram

PLASMA TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : PP01A

MODEL : 42PJ350R 42PJ350R-MA

North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com

Internal Use Only

Printed in Korea

P/NO : MFL62881410(1005-REV02)

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Only for training and service purposes

CONTENTS

CONTENTS ............................................................................................................................... 2

SAFETY PRECAUTIONS ...........................................................................................................3

SPECIFICATION.........................................................................................................................4

ADJUSTMENT INSTRUCTION ..................................................................................................7

BLOCK DIAGRAM ...................................................................................................................15

EXPLODED VIEW ..................................................................................................................16

SVC. SHEET ................................................................................................................................

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Only for training and service purposes

SAFETY PRECAUTIONS

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.

General Guidance

An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks.

It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this monitor is blown, replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Due to high vacuum and large surface area of picture tube, extreme care should be used in handling the Picture Tube. Do not lift the Picture tube by it's Neck.

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1MΩ and 5.2MΩ. When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer.

Leakage Current Hot Check (See below Figure)

Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check.

Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to 0.5mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer.

Leakage Current Hot Check circuit

1.5 Kohm/10W

To Instrument's exposed  METALLIC PARTS

Good Earth Ground such as WATER PIPE, CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF

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Only for training and service purposes

SPECIFICATIONS

NOTE : Specifications and others are subject to change without notice for improvement

V Application Range

This spec is applied to PDP TV used PP01A Chassis.

V Specification

Each part is tested as below without special appointment.

(1) Temperature : 25 °C ± 5 °C (77 °F ± 9 °F), CST : 40 ± 5 (2) Relative Humidity: 65 % ± 10% (3) Power Voltage: Standard Input voltage (100 V - 240 V ~, 50 / 60 Hz)

* Standard Voltage of each product is marked by models.

(4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with

SBOM.

(5) The receiver must be operated for about 20 minutes prior to the adjustment.

V Test Method

(1) Performance : LGE TV test method followed. (2) Demanded other specification

Safety : CE, IEC specification EMC : CE, IEC

V Module Specification

(1) 42” XGA

42PJ350R-MA Central and South America LG

Model Name Market Place Brand

Model Name

42PJ350R-MA

Remark

Safety : IEC/ EN60065, EMI : CISPR13

Market

Central and South America

Appliance

TEST

Display Screen Device

Aspect Ratio

PDP Module

Operating Environment

Storage Environment

Input Voltage

No Item Specification Remark

106 cm (42 inch) 16: 9 Color Plasma Display Module

16:9

PDP42T1###,

RGB Closed Type

1) Temp. : 0 deg ~ 60 deg

2) Humidity : 20 % ~ 80 %

3) Temp. : -20 deg ~ 60 deg

4) Humidity : 10 % ~ 90 %

AC 100 V - 240 V, 50 / 60 Hz

PDP

Glass Filter

LGE SPEC.

Maker : LGIT

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Only for training and service purposes

V Model General Specification

(1) Central and South America (MA)

No Item Specification Remark

1 Market Central and South America

2 Broadcasting system NTSC, PAL-M, PAL-N

3 Available Channel BAND NTSC

VHF 2~13

UHF 14~69

CATV 1~125

4 Receiving system Upper Heterodyne

5 Video Input (2EA) PAL,SECAM, NTSC Rear 1EA, Side 1EA

6 Component Input (2EA) Y/Cb/Cr, Y/ Pb/Pr

7 RGB Input (1EA) RGB-PC

8 HDMI Input 2ea HDMI-DTV , Only PCM MODE Side HDMI(1), Rear HDMI(1)

: 42/50PJ250-MA only

3ea Side HDMI(1), Rear HDMI(2)

9 Audio Input (5EA) L/R Input(PC 1EA, Component 2EA,

Rear 1EA, Side 1EA)

10 RS-232C (1EA) Remote control

11 USB Input (1EA) SD DivX, MP3, JPEG, PJ250R Rear USB only for service

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Only for training and service purposes

A Chroma & Brightness (Optical)

(1) (With 38% Filter) 42” T1 module

No Item Min Typ Max Unit Remark

(*) Special Peak Brightness Mode

- 1/ 100 ~ 3/ 100 white window Pattern

60Hz : 315 - cd/ m

(typically 1% window size)

50Hz : 315 - Picture Mode : Vivid

1 White peak Brightness - Mode : HDMI

- Resolution : 1920 x 1080 60H

60Hz : 161 60Hz : 173 - cd/ m

(*) Normal Mode

50Hz : 148 50Hz : 161

- 25 white window pattern

- Picture Mode : Vivid

2 White average brightness

60Hz : 47 60Hz : 52 - Full White Pattern

50Hz : 46 50Hz : 50

cd/ m

- Picture Mode : Vivid

3 Brightness uniformity -10 0 +10

- 85IRE Full White Pattern

- Picture Mode: Vivid

White X 0.270 0.285 0.300 White 216 level pattern

Y 0.278 0.293 0.308 Red/ Green/ Blue : 255 level pattern

Red X 0.635 0.640 -

4 Color

Y 0.318 0.330 0.340

coordinate Green X 0.242 0.300 0.305

Y 0.595 0.600 -

Blue X - 0.150 0.158

Y - 0.060 0.070

5 Contrast ratio at dark room 100,000: 1 1,000,000 :1

- White : 1/ 100 White Window Pattern

( Peak Mode )

- Black : Full Black

- Picture Mode : Vivid

6 Color coordinate uniformity -0.01 Average +0.01

- 85IRE Full White Pattern

- Picture Mode : Vivid

Cool X 0.261 0.276 0.291 - 85IRE Full White Pattern

Y 0.268 0.283 0.298 - Picture Mode : Vivid

7 Colour Medium X 0.270 0.285 0.300 - Warm, Cool : Color Temp. UI 30

Temperature Y 0.278 0.293 0.308 - Medium : Color Temp. UI 0

Warm X 0.298 0.313 0.328

Y 0.314 0.329 0.344

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Only for training and service purposes

ADJUSTMENT INSTRUCTION

1. Application Range

This spec sheet is applied to all of the PP01A 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 °C ± 5 °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 V

~ 240 V, 50 / 60 Hz. (5) The receiver must be operated for about 5 minutes prior to

the adjustment when module is in the circumstance of over

15 °C

- In case of keeping module is in the circumstance of 0 °C, it should be placed in the circumstance of above 15 °C for 2 hours

- In case of keeping module is in the circumstance of below

-20 °C, it should be placed in the circumstance of above 15 °C for 3 hours,.

3. S/W Program Download

3-1. Profile

This is for downloading the s/w to the flash memory of the IC402

3-2. Equipment

(1) PC (2) ISP_tool program (3) Download jig

3-3. Connection Structure

3-4. Connection Condition

(1) IC name and circuit number : Flash Memory and IC402 (2) Use voltage : 3.3V (5 pin) (3) SCL : 15 pin (4) SDA : 12 pin (5) Tact time : about 2min and 30seconds

3-5. Download Method (By using MSTAR JIG)

(1) Preliminary Steps

1) Connect the download jig to D-sub jack

2) Connect the PC to USB jack

(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”.

Double click

3) Click the Config button and Change speed E2PROM Device setting : over the 350Khz

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

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

6) Click “Run(3)”.

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

3-6. Download Method (By using USB

Memory Stick)

Caution

- Using ‘power on’ button of the control R/C, power on TV.

- USB file (EPK) version must be bigger than downloaded version of main B/D.

- It should be only one SW binary file in USB Stick

(1) Using ‘Power ON’ button of the control R/C, Power on TV. (2) Insert the USB memory stick to the SET. (3) Display USB loding message then, push the ‘Exit’ Key of

control R/C

(4) Push the ‘MENU’ Key and move the cusor ‘OPTION’ of

OSD ( Fig. 1)

* Caution: Don’t push the ‘OK’ key.Just cusor is on the

‘OPTION’ menu.

(5) Push the “7” key of control R/C continuously.

Then, Display “TV Software Update” Pop-up menu. (Fig. 2)

(6) Select SW file (XXXX.bin) you want, push the “OK” Key. (7) S/W download process is excuted automatically.

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Only for training and service purposes

( Fig. 1)

( Fig. 2)

4. PCB Assembly Adjustment Method

4-1. Option Adjustment Following BOM

Tool Option Area Option Option 1 Option 2 Option 3(Available for EU & Non EU model)

* 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) Enter Password number. The value of Password is “0 0 0

0”.

(3) Input the Option Number that was specified in the BOM,

into the Shipping area.

(4) Select “Tool Option” by using

D/E(CH+/-) key, and press

the number key(0~9) consecutively

ex) If the value of Tool Option1 is 4, input the data using

number key “4” (Fig. 3)

(5) if it is EU model ( such as 42/50PJ**R-ZA ), select “Area

option” by using

D/E(CH+/-) key , and press the number

key(0~9) consecutively.

ex) If the value of Area Option is 40, input the data using

number key “40” (Fig. 3)

Caution

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

* PP01A/B/C Tool option

(6) EDID D/L Method

After software D/L or PCBA manufacturing, you can download EDID Data. When you adjust Tool Option, H6 Model EDID download process is executed automatically

* If the model don’t have HDMI 3, HDMI 3 will be disappeared

at OSD Window.

Caution

- When you adjust tool option, don’t connect HDMI or Dsub cable.

- If you connect some cable, EDID D/L process will be failed.

(7) 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’s module from factory JIG model.

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

inspection.

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Only for training and service purposes

( Fig. 3)

Model Tool option

50PJ250R-TA 16

42PJ250R-ZA 23

CSA Model Tool option Area option

42PJ25*R-M* 1 40

50PJ25*R-M* 2 40

42PJ35*R-M* 3 40

50PJ35*R-M* 4 40

42PJ26*R-M* 5 40

50PJ26*R-M* 6 40

50PK55*R-M* 7 40

60PK55*R-M* 8 40

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Only for training and service purposes

5. EDID(The Extended Display Identification Data)

Caution

- Never Use the cable( HDMI or D-sub cable) for EDID Writing.

- Automatically PP01A/B/C Model EDID download process is executed when you adjust Tool Option.

< Jack Layout>

<NON-EU AREA>

Inch

Tool

SIDE AV 0/1

HDMI 0/1/2/3

Side HDMI 0/1

COMP2 0/1

RGB 0/1

RS232C 0/1

Local Key 0 (7KEY) / 1 (8KEY)

LED TYPE 0 (RED) / 1 (RED/White) / 2 (Reserve)

USB TYPE 0 (NONE) / 1 (PHOTO, MUSIC)

/ 2 (PHOTO, MUSIC, DivX)

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Only for training and service purposes

5-1. EDID Data

O XGA EDID DATA ( 42 inch)

<Analog(RGB) : 128bytes>

<HDMI 3 : 256bytes> SIDE HDMI(HDMI 3)

NO Item Condition Hex Data

1 Manufacturer ID GSM 1E6D

2 Version Digital : 1 01

3 Revision Digital : 3 03

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