LG RT-42PX10, RT-42PX10H User Manual

PLASMA TV

SERVICE MANUAL

CAUTION

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

CHASSIS : RF-043B

MODEL : RT-42PX10/H

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

- 2 -

CONTENTS

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

DESCRIPTION OF CONTROLS ........................................................................ 4

SPECIFICATIONS ............................................................................................ 13

ADJUSTMENT INSTRUCTIONS ......................................................................15

TROUBLE SHOOTING GUIDE..........................................................................18

BLOCK DIAGRAM.............................................................................................29

EXPLODED VIEW..............................................................................................32

EXPLODED VIEW PARTS LIST........................................................................33

REPLACEMENT PARTS LIST...........................................................................34

SCHEMATIC DIAGRAM ........................................................................................

PRINTED CIRCUIT BOARD ..................................................................................

- 3 -

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 Replacement Parts List. 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

- 4 -

DESCRIPTION OF CONTROLS

- When using the remote control aim it at the remote control sensor of the set.

- There's maybe a defect in consecutive operation of remote control in specified brightness according to this set feature.

POWERMUTE

TV/AV

MULTIMEDIA

LIST ARC

VOL

1 2 3

4 5 6

PSM

SSM

8 9

VOL

SPLIT ZOOM

PIP/DW

SLEEP

REVEAL

TEXT/

PIP PR+

WIN. SIZE

MIX

PIP PR-

POSITION

TIME

SWAP

HOLD

INDEX

PIP INPUT

I/II

MULTIMEDIA

Selects the Component, RGB or DVI

modes.

PIP/DW

Switches the sub picture on or off.

Selects PIP or DW modes.

PIP PR + /-

Selects a programme for the sub picture.

SWAP

Alternates between main and sub pic-

ture.

PIP INPUT

Selects the input mode for the sub pic-

ture.

WIN.SIZE

Adjusts the sub picture size.

POSITION

Moves the sub picture to

DD/ EE

or FF / GG

direction.

POWER

switches the set on from standby or off to standby.

ARC

Changes the picture format.

Displays on screen menus one by one. Exits the current menu. Memorizes menu changes.

SWAP

Returns to the previously viewed programme.

Note : This function works only when

Favorite programme

is set to

Off

. Otherwise each press of this button will select a stored favorite programme.

SSM

To select the sound appropriate to your viewing programme character.

NUMBER buttons

SLEEP

Sets the sleep timer.

I/II Selects the language during dual language broadcast. Selects the sound output.

TEXT

These buttons are used for teletext. For further details, see the ‘Teletext’ section.

Note : In teletext mode, the PIP PR +/-, SWAP and PIP INPUT buttons are

used for teletext function.

LIST

Displays the program table.

TV/AV

Selects the TV, AV, Component, RGB

or DVI modes.

MUTE

Switches the sound on or off.

DD/ EE

(Programme Up/Down)

selects a programme or a menu item.

switches the set on from standby.

FF/ GG

(Volume Up/Down)

adjusts the volume.

adjusts menu settings.

accepts your selection or displays the

current mode.

PSM

Adjusts the factory preset picture

according to the room.

SPLIT ZOOM

Enlarge the screen with regular

ration.

- 5 -

ON/OFF

TV/AV MENU VOL PR

- Shown is a simplified representation of the set.

- Here shown may be somewhat different from your set.

Main Power Button

Remote Control Sensor

TV/AV Button

Selects the TV, AV, Component, RGB or DVI modes. If OSD is displayed, selects menu item.

Displays on screen menus one by one. Exits the current menu. Memorizes menu changes.

DD/ EE

(Programme Up/Down)

selects a programme or a menu item.

switches the set on from standby.

FF/ GG

(Volume Up/Down)

adjusts the volume.

adjusts menu settings.

Power Standby Indicator

Illuminates red in standby mode, Illuminates green when the set is turned on

- 6 -

RS-232C INPUT

(CONTROL/SERVICE)

REMOTE

CONTROL

DVI INPUT

S-VIDEO

AUDIO

VIDEO

MONITOR OUTPUT

A/V

INPUT1

AUDIO

R L

Antenna

AC INPUT

VIDEO

INPUT 2

COMPONENT

INPUT 1

COMPONENT

AUDIO INPUT

RGB INPUT

L/MOND

S-VIDEOVIDEOAUDIO

AV2

L/MONO

1. CONTROL LOCK / REMOTE CONTROL

2. RS-232C INPUT(CONTROL/SERVICE) PORT

Connect to the RS-232C port on a PC.

3. DVI INPUT / AUDIO INPUT / RGB INPUT

Connect the monitor output socket of the PERSONAL COMPUTER to this socket.

4. COMPONENT INPUT

Connect DVD video outputs to Y, PB, PR of COMPONENT INPUT and audio outputs to Audio sockets of AUDIO INPUT.

5. AUDIO/VIDEO IN SOCKETS (AV1)

Connect the audio/video out sockets of external equipment to these sockets.

S-VIDEO/AUDIO IN SOCKETS

Connect the S-VIDEO out socket of an VCR to the S-VIDEO socket. Connect the audio out sockets of the VCR to the audio sockets as in AV1.

6. ANTENNA INPUT

7. POWER CORD SOCKET

This Monitor operates on an AC power. The voltage is indicated on the Specifications page. Never attempt to operate the Monitor on DC power.

8. AUDIO/VIDEO IN SOCKETS (AV2) S-VIDEO/AUDIO IN SOCKETS

4 5 76

1 2

- 7 -

- Be careful for the bronze wire not to be bended in connecting to antenna input port.

Antenna Connection

INPUT

S-VIDEO

AUDIO

VIDEO

MONITOR OUTPUT

A/V

INPUT1

AUDIO

Antenna

AC INPUT

VIDEO

INPUT 2

COMPONENT

INPUT 1

COMPONENT

AUDIO INPUT

RGB INPUT

L/MOND

Watching VCR

- When connecting the Monitor to external equipment, match the colours of connecting ports (Video - yellow, Audio (L) - white, Audio (R) -red).

- Connect the VIDEO INPUT socket (yellow) to the VIDEO INPUT on the set.

- If you have a mono VCR, connect the audio cable from the VCR to the AUDIO (L/MONO) input on the set.

- If you connect an S-VIDEO VCR to the S-VIDEO input, the picture quality is improved; compared to connecting a regular VCR to the Video input.

- Use the orbiter function to Avoid having a fixed image remain on the screen for a long period of time. Typically a frozen still picture from a VCR. (Refer to p. 25) If a 4:3 picture format is used; the fixed image may remain visible on the screen.

- To avoid picture noise (interference), leave an adequate distance between the VCR and set.

Watching TV programmes

- Turn the set on and select the programme you want.

Watching VCR

1. Use the TV/AV button on the remote control to

select

AV1 or AV2.

- If both S-VIDEO and VIDEO sockets have been connected to the S-VHS VCR simultaneously, only the S-VIDEO can be received.

2. Insert a video tape into the VCR and press the PLAY button on the VCR.

(See VCR owner’s manual)

S-VIDEO

AUDIO

VIDEO

MONITOR OUTPUT

A/V

INPUT1

AUDIO

R L

Antenna

AC IN

VIDEO

INPUT 2

COMPONENT

INPUT 1

COMPONENT

RGB INPUT

L/MOND

Apartments (connecting to wall antenna socket)

Private house (connecting to wall outdoor antenna)

outdoor antenna

wall antenna socket

VHF antenna UHF antenna

RF coaxial wire (75 ohms)

< Back panel of the set >

< VCR >

- 8 -

Watching Cable TV

- After subscribing for a local cable TV station and installing a converter you can watch cable TV.

- For further information of cable TV, contact the local cable TV station.

To watch cable TV

1. Use the TV/AV button on the remote control to

select

AV1 or AV2.

2. Tune to cable service provided channels using the cable box.

Watching external AV source

- When connecting the set to an external source, match the colours of AUDIO/VIDEO input jacks on the set with the output jacks on the audio/video equipment: Video = yellow, Audio (Left) = white, Audio (Right) = red.

How to use

1. Use the TV/AV button on the remote control to

select AV1 or AV2.

2. Operate the corresponding external equipment. See external equipment operating guide.

S-VIDEO

AUDIO

VIDEO

MONITOR OUTPUT

A/V

INPUT1

AUDIO

R L

VIDEO

INPUT 2

COMPONENT

INPUT 1

COMPONENT

AUDIO INPUT

RGB INPUT

L/MOND

R L

AUDIO VIDE O

S-VIDEO

AUDIO

VIDEO

MONITOR OUTPUT

A/V

INPUT1

AUDIO

R L

Antenna

AC INP

VIDEO

INPUT 2

COMPONENT

INPUT 1

COMPONENT

RGB INPUT

L/MOND

< Back panel of the set >

< Cable box >

< Back panel of the set >

Camcorder

Video game set

- 9 -

Watching DVD

How to connect

Connect DVD video outputs to Y, PB, PR of COMPONENT INPUT and audio outputs to Audio sockets of AUDIO INPUT.

How to use

1. Turn on the DVD player, and insert a DVD.

2. Use TV/AV or MULTIMEDIA button on the remote

control to select

Component 1 or Component 2. Refer to

the DVD player's manual for operating instructions.

• Component Input ports

You can get better picture quality if you connect DVD player with component input ports as below.

Component ports of the

set

Video output ports of DVD player

Y Y Y Y

B-Y

Cb PB

R-Y

< Back panel of the set >

< DVD player >

Watching DTV (option)

- To watch digitally broadcast programs, purchase and connect a digital set-top box.

How to connect

1. Use the monitor’s COMPONENT (Y, PB, PR) INPUT, RGB or DVI jack for video connections, depending on your set-top box connector. Then, make the corresponding audio connections.

How to use

1. Turn on the digital set-top box. (Refer to the owner’s manual for the digital set-top box.)

2. Use TV/AV or MULTIMEDIA on the remote control to select

Component 1, Component 2 or RGB.

RS-232C INPUT

(CONTROL/SERVICE)

DVI INPUT

S-VIDEO

AUDIO

VIDEO

MONITOR OUTPUT

A/V

INPUT1

AUDIO

R L

VIDEO

INPUT 2

COMPONENT

INPUT 1

COMPONENT

AUDIO INPUT

RGB INPUT

L/MOND

(R) AUDIO (L) Y P

B R

P(R) AUDIO (L)

DTV OUTPUT

• DTV Input signal

576p(50Hz) 1080i(50Hz) 1152i(50Hz)

Mode

Terminal

Component

o o o

RGB (DTV)

o o o

< Back panel of the set >

< Digital Set-top box >

RGB INPUT

COMPONENT

INPUT 2

COMPONENT

INPUT 1

VIDEO

AC INP

MONITOR OUTPUT

A/V

INPUT1

L/MOND

R L

AUDIO

VIDEO

Antenna

S-VIDEO

- 10 -

Connecting PC

- To enjoy vivid picture and sound, connect a PC to the set.

- Avoid keeping a fixed image on the set’s screen for a long period of time. The fixed image may become permanently imprinted on the screen; use a screen saver when possible.

- Connect PC to the RGB INPUT(PC INPUT) or DVI INPUT(DIGITALRGB INPUT) port of the set; change the resolution output of PC accordingly.

- There might be a noise according to some resolution, vertical pattern, contrast or brightness in PC mode. Then change the PC mode into other resolution or change the refresh rate into other rate or adjust the brightness and contrast on the menu until the picture is clean. If the refresh rate of the PC graphic card can not be changed, change the PC graphic card or consult it to the manufacturer of the PC graphic card.

- The synchronization input form for Horizontal and Vertical frequencies is separate.

Setup Instructions to Connect a PC to your set

- We recommend using 640x480, 60Hz for the PC mode, they provide the best picture quality.

- If the resolution of PC is over UXGA, there will be no picture on the set.

- Connect the signal cable from the set output port of the PC to the RGB INPUT port of the set or the signal cable from the DVI output port of the PC to the DVI INPUT port on the set.

- Connect the audio cable from the PC to the Audio input on the set. (Audio cables are not included with the set).

- If using a sound card, adjust PC sound as required.

- This set apply a VESAPlug and Play Solution. The set provides EDID data to the PC system with a DDC protocol. The PC adjusts automatically to use this set.

- DDC protocol is preset for RGB (Analog RGB), DVI (Digital RGB) mode.

- If required, adjust the set settings for Plug and Play functionally.

- If graphic card on the PC does not output analog and digital RGB simultaneously, connect only one of both RGB INPUT or DVI INPUT to display the PC on the set. If graphic card on the PC does output analog and digital RGB simultaneously, set the set to either RGB or DVI; (the other mode is set to Plug and Play automatically by the set.)

- DOS mode may not work depending on video card if using a DVI-I cable.

232C INPUT

TROL/SERVICE)

DVI INPUT

AUDIO

R L

VIDEO

INPUT 2

COMPONENT

INPUT 1

COMPONENT

AUDIO INPUT

RGB INPUT

PC Setup

1. Turn on the PC and apply power to the set.

2. Turn on the display by pressing the POWER button on the set’s remote control.

3. Use the TV/AV or MULTIMEDIA button on the remote control to select the RGB or DVI input source.

4. Set the resolution output of the PC to SXGA or under (1280 x 1024, 60Hz). (Refer to p. 13)

< Back panel of the set >

- 11 -

RGB / DVI mode

Resolution

640x350

720x400

640x480

848x480

800x600

Horizontal

Frequency(KHz)

Vertical

Frequency(Hz)

852x480

832x624

1024x768

1152x864

1152x870 1280x960

1280x1024

31.468

37.861

31.469

37.927

31.469

35.000

37.861

37.500

43.269

31.500

37.799

39.375

31.500

37.799

39.375

35.156

37.879

48.077

46.875

53.674

49.725

48.363

56.476

60.023

68.677

54.348

63.995

67.500

77.487

68.681

60.023

63.981

70.09

85.08

70.08

85.03

59.94

66.66

72.80

75.00

85.00

60.00

70.00

75.00

60.00

70.00

75.00

56.25

60.31

72.18

75.00

85.06

74.55

60.00

70.06

75.02

85.00

60.05

70.01

75.00

85.00

75.06

60.02

- 12 -

D-sub 15 pin cable

AS mark

LG TV

Owner’s Manual

1.5V

Alkaline batteries

Power Cord

POWERMUTE

TV/AV

MULTIMEDIA

LIST ARC

VOL

1 2 3

4 5 6

PSM

SSM

8 9

VOL

SPLIT ZOOM

PIP/DW

SLEEP

REVEAL

TEXT/

PIP PR+

WIN. SIZE

MIX

PIP PR-

POSITION

TIME

SWAP

HOLD

INDEX

PIP INPUT

I/II

Remote Control handset

DVI-D Cable

- Optional extras can be changed or modified for quality improvement without any notification new optional extras can be added.

- Contract your dealer for buying these items.

Optional Extras

Tilt wall mounting bracket

404250 40 42 50

Video cables Audio cables

Ceiling mounting bracket

- Secure the TV assembly by attaching it to a wall for additional support.

Attaching the TV assembly to the wall

• Install the TV brackets on the TV as shown. Insert the 2 bolts and tighten securely, in the upper holes on the bracket.

Install the wall brackets on the wall with 4 bolts*, (not supplied with the product), as shown. Match the height of the TV brackets and the wall brackets. Check to be sure the brackets are tightened securely.

• Secure the TV assembly to the wall with strong strings or wound wire cables, (not supplied with the product), as shown.

2-TV brackets

2-Wall brackets

2-TV bracket bolts

- 13 -

SPECIFICATIONS

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

V Application Range

This spec is applied to the 42”PDP TV used RF-043B Chassis.

V Specification

Each part is tested as below without special appointment.

1) Temperature : 25

¡ 5°C (77¡ 9°F)

2) Relative Humidity: 65¡ 10%

3) Power Voltage: Standard Input voltage (100V~240V@ 50/60Hz) * 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 BOM.

The receiver must be operated for about 20 minutes prior to the adjustment

V Test and Inspection Method

1) Performance : LGE TV test method followed.

2) Demanded other specification

Safety: CE, IEC specification EMC : CE, IEC

V General Specification

1. General Specification

Appliance

TEST

Remark Safety : IEC/EN60095 EMI : EN55013 EMS : EN55020 Safety : IEC60065 EMI : CISPR13

Model Name

RT-42PX10

RZ-42PX10

Market

Non-EU

Chassis

RF-043B

Brand

LG LG

Model Name

RZ-42PX10 RT-42PX10

Market Place

Non-EU

Remark

PDP

Maker : NBK / Mitsui / LG Chemical

LGE SPEC

Maker : SONY / Murata / Sanken

Specification 42 inch wide Color Display Module 16:9 PDP42V6xxxx,RGB Closed Type 45% Total light transmittance (E- Mesh)

1) Temp : 0~40 deg

2) Humidity : 0~85%

1) Temp : -20~60 deg

2) Humidity : 0~85% AC100 ~ 240V, 50/60Hz

1 2 3 4 5

Item Display Screen Device Aspect Ratio PDP Module Screen Filter Operating Environment

Storage Environment

Input Voltage

2. Model Speccification (1) RZ-42PX10

(2) RT-42PX10

Item Market Broadcasting Receiving system Scart Jack ( 3EA ) Video Input(2EA)

S-Video Input(2EA)

Component Input(1EA) RGB Input(1EA) DVI Input(1EA) Audio Input(4EA) Wired Control

Specification EU PAL B/G/I/D/K, SECAM L/L Upper Heterodyne PAL, SECAM PAL, SECAM, NTSC

PAL, SECAM, NTSC

Y/Cb/Cr, Y/Pb/Pr RGB-PC DVI-PC PC Audio, Component,AV(2EA) Discrete IR

Remark

4 System : PAL B/G/I/D/K, SECAM L, NTSC4.43,PAL60 4 System : PAL B/G/I/D/K, SECAM L, NTSC4.43,PAL60

DVI-D L/R Input

- 14 -

9 10 11 12

14 15 16 17 18

Remark

4 System : PAL B/G/I/D/K, SECAM L, NTSC4.43,PAL60 4 System : PAL B/G/I/D/K, SECAM L, NTSC4.43,PAL60 4 System : PAL B/G/I/D/K, SECAM L, NTSC4.43,PAL60

DVI-D L/R Input

Specification Non-EU PAL B/G/I/D/K, NTSC Upper Heterodyne PAL, SECAM, NTSC

PAL, SECAM, NTSC

Y/Cb/Cr, Y/Pb/Pr RGB-PC RGB-DTV(for Austrailian) DVI-PC PC Audio, Component,AV(2EA), AV(2EA) Discrete IR

19 20 21 22

25 26

27 28

Item Market Broadcasting Receiving system Video Input(2EA)

Video Output(1EA)

S-Video Input(2EA)

Component Input(2EA) RGB Input

DVI Input Audio Input(5EA)

Wired Control

- 15 -

1. Application Range

The spec sheet is applide all of the 42”PDP TV, RF-043B chassis by manufacturing LG TV Plant or sort plants.

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 of temperature and 65±10% of relative humidity if

there is no specific designation. (4) The input voltage of the receiver must keep 100~220V,

50/60Hz. (5) The receiver must be operated for about 15 minutes prior

to the adjustment.

O After RGB Full white HEAT-RUN Mode, the receiver must

be operated prior to adjustment.

O Enter into HEAT-RUN MODE

1) Press the POWER ON KEY on R/C for adjustment.

2) OSD display and screen display 100% full WHITE PATTERN.

[ Set is activated HEAT-RUN without signal generator in

this mode.

[ Single color pattern(RED/BLUE/GREEN) of HEAT-RUN

mode uses to check PANEL.

Caution) If you turn on a still screen more than 20 minutes

(Especially digital pattern, cross hatch pattern), a after image may be occur in the black level part of the screen

PCB assembly adjustment method

3-1. Channel memory

(1) Setting up the G-prove

1) Install the GProve. (GProve4.4.0.2.exe)

2) After installing the Gprobe, [Option -> Connection Setup] or click the icon indicated in the picture and then setup as below the picture. (In case of the port (second one), set to the serial port of the connected PC The other only have to be set as below the picture.)

3) After finishing inputs, click the button [OK] to complete the connection setup.

(2) Confirming the G-prove

1) Connect Rs232 cable and then turn on the power. if communication is correct, the message is showed like in the left output terminal.

2) If the message is not showed, push the [INSTART] button of the adjust remocon twice, and change the right selection of the [System Control -> RS-232 Host] from GProbe to PC. ** If it is impossible to check the OSD, push the [TILT]

button of the adjust remocon. Then, the message which is “Starting Gprove...” comes

up. From this time, communication is operated correctly. However, you have to push the [TILT] button again in case of turning on Main Power.

** If you want to check again whether commnunication

is on or not, input “test” and push the Enter key on the right input terminal. If communication is on, the message of “Test passed.” will come up

(3) Channel memory method

1) Click [Command -> Batch].

When the window of [Batch] is showed, enter the text file

(Ch_Memory-RZ_PX10.txt) in the right blank of the File.

3) Click the button [OK] to write CH information in the EEPROM.

It means the completion of the CH memory download that

the message of right output terminal is showed as below.

ADJUSTMENT INSTRUCTIONS

fig1

fig2

fig3

+ 32 hidden pages