Sanyo PLC-WL2500A Service Manual page 31

Electrical Adjustments
PC, video, component manual adjustment
When the PC, video or component auto calibration fails,
take the following manual adjustment instead of auto
calibration.
[1] Manual adjustment (PC)
Input mode Computer 1 (RGB)
Input signal XGA computer signal
Input pattern 16-step gray scale
- Pedestal adjustment
1. Enter the service mode.
2. A djust the black level to be minimum by changing the
data values of the Group - No.
Group No. Test Point
0 - 0
TP35G
0 - 1 TP35R
0 - 2
TP35B
- Gain adjustment
1. Enter the service mode.
a
2. A djust the amplitude "
the data values of the Group - No.
Group No. Test Point
0 - 3 TP35G
0 - 4
TP35R
0 - 5 TP35B
White Level
(a)
Adjustment
ADC G-Offset
ADC R-Offset
ADC B-Offset
" to be minimum by changing
Adjustment
ADC G-Gain
ADC R-Gain
ADC B-Gain
[2] Manual adjustment (Component)
Input mode Computer 1 (Component)
Input signal 4 80i component signal
Input pattern 1 6-step gray scale
- Pedestal adjustment
1. Enter the service mode.
2. A djust the black level to be mimimum by changing the
data values of the Group - No.
Group No. Test Point
0 - 0
0 - 1
0 - 2
- Gain adjustment
1. Enter the service mode.
2. A djust the amplitude "
the data values of the Group - No.
Group No. Test Point
0 - 3
White Level
(a)
[3] Manual adjustment (Video)
Input mode Video
Input signal C omposite video signal
Input pattern 1 6-step gray scale
- Gain adjustment
1. Enter the service mode.
2. A djust the amplitude "
the data values of the Group - No.
Group No. Test Point
20 - 0
White Level
(a)
-31-
Adjustment
TP35G ADC G-Offset
TP35R ADC R-Offset
TP35B ADC B-Offset
a
" to be minimum by changing
Adjustment
TP35G ADC Y-Gain
a
" to be minimum by changing
Adjustment
TP35G Y-Level