LG RZ-42PX11, RZ-42PX10 Schematic

PLASMA TV

SERVICE MANUAL

CAUTION

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

CHASSIS : RF-043B

MODEL : RZ-42PX10/11

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

MENU

PR

PR

VOL

OK

123

456

7

PSM

SSM

89

0

VOL

SPLIT ZOOM

PIP/DW

SLEEP

REVEAL

TEXT/

PIP PR+

WIN. SIZE

MIX

PIP PR-

POSITION

TIME

SWAP

HOLD

INDEX

PIP INPUT

?

i

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

!/ "

or # / $

direction.

POWER

switches the set on from standby or
off to standby.

ARC

Changes the picture format.

MENU

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.

!/ "

(Programme Up/Down)

selects a programme or a menu item.

switches the set on from standby.

#/ $

(Volume Up/Down)

adjusts the volume.

adjusts menu settings.

OK

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 -

<Front Panel Controls>

ON/OFF

TV/AV MENU VOL PR

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.

MENU

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

!/ "

(Programme Up/Down)

selects a programme or a menu item.

switches the set on from standby.

#/ $

(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

or

- 6 -

<Back Panel>

Antenna

REMOTE

CONTROL

S-VIDEOVIDEOAUDIO

RS-232C INPUT DVI INPUT
(CONTROL/SERVICE)

AC INPUT

AUDIO INPUT RGB INPUT

YP

B PR LR

L

(MONO)

R

COMPONENT

S-VIDEO VIDEO AUDIO

AUDIO

AV4

AV1

AV5

AV2 AV3

R

L/MONO

1. 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, P

B, PR of COMPONENT

INPUT and audio outputs to Audio sockets of AUDIO INPUT.

AUDIO/VIDEO IN SOCKETS (AV4)

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 AV4.

5. ANTENNA INPUT

6. EURO SCART SOCKET

Connect the euro scart socket of the VCR to these sockets.

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 (AV5)
S-VIDEO/AUDIO IN SOCKETS

3

4 5 6

8

71 2

- 7 -

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

Antenna Connection

Antenna

E

L

RS-232C INPUT DVI INPUT

(CONTROL/SERVICE)

AC INPUT

AUDIO INPUT RGB INPUT

YP

B PR LR

L

(MONO)

R

COMPONENT

S-VIDEO VIDEO AUDIO

AUDIO

AV4

AV1 AV2 AV3

Watching VCR

- When connecting the set 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.
Or, connect the Euro scart socket of the VCR to the Euro scart socket of the set.

- 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, AV2, AV3, AV4 or AV5.

- 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)

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 >

< 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, AV2, AV3, AV4 or AV5.

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.
Or, connect the Euro scart socket of the VCR to the Euro scart socket of the set.

How to use

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

select

AV1, AV2, AV3, AV4 or AV5.

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

RL

AUDIO VIDEO

R

< 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. 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

Y

PB

PR

Video output ports
of DVD player

Y
Y
Y
Y

Pb

B-Y

Cb

P

B

Pr

R-Y

Cr
P

R

R

< Back panel of the set >

< DVD player >

R

RS-232C INPUT DVI INPUT

TE

(CONTROL/SERVICE)

OL

AUDIO INPUT RGB INPUT

COMPONENT

YP

S-VIDEO VIDEO AUDIO

R

R

AUDIO

B PR LR

(MONO)

L

R

AV4

Antenna

- 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.

An

32C INPUT DVI INPUT

OL/SERVICE)

AUDIO INPUT RGB INPUT

YP

B PR LR

L

(MONO)

R

COMPONENT

S-VIDEO VIDEO AUDIO

AUDIO

AV4

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

60.02

- 12 -

D-sub 15 pin cable

AS mark

LG TV

Owner’s Manual

1.5V

1.5V

Alkaline batteries

Power Cord

POWERMUTE

TV/AV

MULTIMEDIA

LIST ARC

MENU

PR

PR

VOL

OK

123

456

7

PSM

SSM

89

0

VOL

SPLIT ZOOM

PIP/DW

SLEEP

REVEAL

TEXT/

PIP PR+

WIN. SIZE

MIX

PIP PR-

POSITION

TIME

SWAP

HOLD

INDEX

PIP INPUT

?

i

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

40

42

50

42

40

- 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

.

% Application Range

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

%&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.

5)

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

.

% Test and Inspection Method

1) Performance : LGE TV test method followed.

2) Demanded other specification

Safety: CE, IEC specification
EMC : CE, IEC

% General Specification

1. General Specification

Appliance

TEST

TEST

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

Model Name

RT-42PX10

RZ-42PX10

Market

EU

Non-EU

Chassis

RF-043B

Brand

LG
LG

Model Name

RZ-42PX10
RT-42PX10

Market Place

EU

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

No

1
2
3
4
5

6

7

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

Storage Environment

Input Voltage