TX-43P15X, TX-43P15H, TX-43P15HQ, TX-43P15HZ, TX-51P15X, TX-51P15H, TX-51P15HQ, TX-51P15HZ (serv.man2) - Panasonic TV Service Manual (repair manual). Page 18

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Sub Contrast, Cut off and White Balance Adjustment
Preparation
Sub Contrast Adjustment
CUT OFF PRE. Adjustment
Adjustment Procedure
Waveform
1. Connect Oscilloscope : TPLG1 on LG-board.
2. Into Market mode CHK3.
3. Receive Black Pattern.
4. Adjust Sub Bright : A=200±2V
5. Receive Crosshatch Pattern.
6. Into Market mode CHK3.
7. Adjust Sub Contrast : B=120±2V
Preparation &
ADJ
Adjustment Procedure
Waveform
G-CUT OFF
B-CUT OFF
R-CUT OFF
Oscilloscope
TPLG1
(on LG-board)
TPLB1
(on LB-board)
TPLR1
(on LR-board)
Setting
Projector
Into Market 
mode CHK3
Into Market 
mode CHK3
Into Market 
mode CHK3
Signal generator
Black Pattern
Black Pattern
Black Pattern
Adjustment
G-CUT OFF
(in CHK3)
A=200±2V
B-CUT OFF
(in CHK3)
A=200±2V
R-CUT OFF
(in CHK3)
A=190±2V
:
Black Level
GND
A
B
B
Black P tt
A
Black Pattern
A
GND
Sound Menu : 
Standard Normal
Colour Temperature :
Standard (STD)
Picture Menu :
Dynamic Normal
D.PNR : 
OFF
P.AI : 
OFF
Signal Generator : 
Crosshatch Pattern
Black Pattern
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