LG RT-42PX10, Service Manual

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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
.
3. 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].
2) 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.
4) 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