Read LG C42PW120-WA (CHASSIS:PC21A) Service Manual online
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7.4.3. Adjustment method
7.4.3.1. Vs adjustment (refer fig.1)
(1) Connect + terminal of D.M.M. to Vs pin of P811, connect
-terminal to GND pin of P811
(2) After turning VR901, voltage of D.M.M adjustment as same
as Vs voltage which on label of panel left/top ( deviation ;
±0.5V)
7.4.3.2. Va adjustment (refer fig.1)
(1) After receiving 100% Full White Pattern, HEAT RUN.
(2) Connect + terminal of D.M.M. to Va pin of P811, connect
-terminal to GND pin of P811
(3) After turning VR502,voltage of D.M.M adjustment as same
as Va voltage which on label of panel left/top (deviation;
±0.5V)
8. Default Service option.
8.1. ADC-Set.
■ R-Gain adjustment Value (default 128)
■ G-Gain adjustment Value (default 128)
■ B-Gain adjustment Value (default 128)
■ R-Offset adjustment Value (default 128)
■ G-Offset adjustment Value (default 128)
■ B-Offset adjustment Value (default 128)
8.2. White balance. Value.
8.3. Temperature Threshold
■ Threshold Down Low
20
■ Threshold Up Low
23
■ Threshold Down High
70
■ Threshold Up High
75
9. USB DOWNLOAD(*.epk file download)
■ Put the USB Stick to the USB socket
■ Press Menu key, and move OPTION
■ Press “FAV” Press 7 times
■ Select download file (epk file)
■ After download is finished, remove the USB stick.
■ Press “IN-START” key of ADJ remote control, check the
S/W version.
■ After downloading, have to adjust TOOL OPTION again.
1. Push "IN-START" key in service remote controller.
2. Select "Tool Option 1" and Push “OK” button.
3. Punch in the number. (Each of models has their number.)
4. Completed selecting Tool option.
- Model : C42PW120-WA
- Module : 42C4
Center(Default)
Mid
Studio
R Gain
192
192
G Gain
192
150
B Gain
192
70
R Cut
64
64
G Cut
64
64
B Cut
64
64
TOOL
OPTION 1
TOOL
OPTION 2
TOOL
OPTION 3
TOOL
OPTION 4
TOOL
OPTION 5
24992
43022
4208
0
162
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