panas TX-51P100X Service Manual page 21

Sub Contrast, Sub Bright, Cut off, and White Balance Adjustment
Sub Contrast and Sub Bright Adjustment (MARKET MODE CHK2,CHK3)
Adjustment Procedure
1. Connect Oscilloscope : TPLG5 on LG-board.
2. Into Market mode CHK3.
3. Receive Black Pattern.
4. Adjust Sub Bright : A=180 ± 2V
5. Receive Crosshatch Pattern.
6. Into Market mode CHK2.
7. Adjust Sub Contrast : B=110 ± 2V
CUT OFF Adjustment (MARKET MODE CHK6)
Preparation &
ADJ
G-CUT OFF
Oscilloscope TPLG5
(on LG-board)
Setting Into Market mode
Projector CHK6
Signal generator Black Pattern
Adjustment EX DAC G-CUT
OFF
A=180 ± 2V
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Adjustment Procedure
B-CUT OFF
TPLB4 TPLR5
(on LB-board) (on LR-board)
Into Market mode Into Market mode
CHK6 CHK6
Black Pattern Black Pattern
EX DAC B-CUT EX DAC R-CUT
OFF OFF
A=180 ± 2V A=180 ± 2V
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Waveform
TPLG5
A=180±2V
TPLG5
R-CUT OFF
Black Pattern
A
Black Level
GND
B=110±2V
GND
Waveform
GND