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1. Application Object
These instructions are applied all of the 42" PLASMA TV,
PT81A Chassis.
2. Note
* The module keeping condition
V
The module keeping condition: The normal temperature
condition(more than 15°C)
-> Immediately the line supply.
V
The module keeping condition: 0°C
-> The module must be kept for more than 2 hours at the
normal temperature.
V
The module keeping condition: -20°C
-> The module must be kept for more than 3 hours at the
normal temperature.
V
The case of Gu-mi factory at the winter season.
-> The module must be kept for more than 5 minutes at the
heating zone(40°C~45°C).
(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 100-240V~,
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 PATTERN MODE.
- Select "3. Test Pattern" by using
press ENTER(
- Select "White" by using (
ENTER(
V
)
* 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 attern, cross hatch
pattern), an after image may be occur in the black
level part of the screen.
3. S/W auto download using the USB
Memory stick
* 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.
(1) Insert the USB memory sick the PCB ASSEMBLY.
(2) Using 'power on' button of the control R/C, power on TV.
(3) S/W download process is executed automatically.
Copyright©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
ADJUSTMENT INSTRUCTION
D
E
/
(CH+/-) and
V
)
F
G
/
VOL+/-) and press
* Using 'power on' button off the control R/C, power on TV.
4. Auto-control adjustment process
(ADC, model-name, EDID)
V
All adjustment process is executed one time through RS-232C.
V
Command send -> ADC Calibration -> Model name
download -> EDID download.
V
Adjsutment process protocol(RS-232C)
NO
Item
CMD1 CMD2 Data 0
1
Ready
a
d
2
ADC
a
d
3
ADC
a
d
Confirmation
4
ADC
a
d
Mode Out
5
EDID
a
e
Download
6
Check EDID
a
e
Status
7
Download
a
e
Mode In
8
Define model
a
e
name
9
Download
a
e
Mode Out
10
Adjustment
a
e
Confirmation
V
Defined model name protocol(RS-232C)
CMD1
CMD2
a
e
5. Manual model name download
(1) Press ADJ KEY on R/C for model name D/L.
(2) Select "0.Model Option" and press ENTER(
(3) Select model name by using
ENTER(
V
).
Model Name
42PG20D-DA
- 6 -
Remark
0
0
Ready
1
0
ADC start
9
0
9
9
1
0~4,9
All=0 ; HDMI1,2,3,4=1,2,3,4 ; RGB=9
2
0~4,9
All=0 ; HDMI1,2,3,4=1,2,3,4 ; RGB=9
0
0
Transmitting adjustment mode In
instruction, operate adjustment command.
5
1~9
Model define index(Data0) are listed at
next table.
9
0
9
9
EDID data existence check in SET
assembly
Data 0
Remark
5
1
42PG20D-AA
V
D
E
/
(CH+/-)and press
Model Option Value
52013360
LGE Internal Use Only
).
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