Samsung SP403JHPX, Service Manual

Page: 24 / 74

Alignment and Adjustments
Samsung Electronics 5-5
5-5-2 LCD Interface IC (CXA1853_A) Adjustment
No. Item Range Initial value Description
00
01
02
03
04
05
06
07
08
09
10
Gamma gain 1
R gamma gain 1
B gamma gain 1
Gamma gain 2
SID ctrl
B gamma gain 2
Gamma ctrl 2
Main bright
R main bright
B main bright
White limit
63
63
63
63
63
63
63
63
63
63
63
41
23
48
16
36
36
34
61
37
36
41
Adjusts the gain of black side on the gamma curve (R,G.B)
Adjusts the gain of black side on the gamma curve for R
Adjusts the gain of black side on the gamma curve for B
Adjusts the gain of white side on the gamma curve (R,G.B)
Adjusts the gain of SID control
Adjusts the gain of white side on the gamma curve for R
Adjusts the change point of the white side on the gamma curve (R,G,B).
The smaller the value, the more it moves towards white.
Adjust the DC level of R,G,B signal before doing the gamma adjustment.
It determines the change point of the gamma curve. The greater the
value, the darker it gets.
Adjusts the DC level of R before doing the gamma adjustment. It deter-
mines the change point of the gamma curve. The greater the value, the
darker it gets.
Adjusts the DC level of B before doing the gamma adjustment. It deter-
mines the change point of the gamma curve. The greater the value, the
darker it gets.
Adjusts the limiter voltage of white peak of R,G,B video signal (applied
to LCD). The greater the value, the lower the limiter
voltage becomes.