- 6 -
LGE Internal Use Only
Copyright©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Object
These instructions are applied all of the 42” PLASMA TV,
PT81A
Chassis.
2. Note
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
D
/
E
(CH+/-) and
press ENTER(
V
)
- Select “White” by using (
F
/
G
VOL+/-) and press
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
(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.
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)
V
Defined model name protocol(RS-232C)
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(
V
).
(3) Select model name by using
D
/
E
(CH+/-)and press
ENTER(
V
).
* The module keeping condition
* 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.
* Using ‘power on’ button off the control R/C, power on TV.
1
2
3
4
5
6
7
8
9
10
Ready
ADC
ADC
Confirmation
ADC
Mode Out
EDID
Download
Check EDID
Status
Download
Mode In
Define model
name
Download
Mode Out
Adjustment
Confirmation
NO
Item
Remark
CMD1 CMD2
Data 0
a
a
a
a
a
a
a
a
a
a
d
d
d
d
e
e
e
e
e
e
0
0
0
9
0~4,9
0~4,9
0
1~9
0
9
0
1
9
9
1
2
0
5
9
9
Ready
ADC start
All=0 ; HDMI1,2,3,4=1,2,3,4 ; RGB=9
All=0 ; HDMI1,2,3,4=1,2,3,4 ; RGB=9
Transmitting adjustment mode In
instruction, operate adjustment command.
Model define index(Data0) are listed at
next table.
EDID data existence check in SET
assembly
a
e
5
1
42PG20D-AA
CMD1
CMD2
Data 0
Remark
42PG20D-DA
52013360
Model Name
Model Option Value
