Sanyo PLC-WM5500 Service Manual page 43

Electrical Adjustment
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 mode (Input 1 RGB)
Input signal 16-step gray scale computer signal
1. Enter the Service mode.
2. Select Group "200",No."70" and set data value to "0".
Select Group "200",No."72" and set data value to "0".
3. Select Group "260",No."0" and set data value "0" to
"1".
4. Adjust the data values listed in the table below as the
100% white part on the screen becomes the most
noisy (darkest).
Group No. Adjustment
10 - 3 ADC-Green Gain
10 - 4 ADC-Red Gain
10 - 5 ADC-Blue Gain
5. Select Group "200",No."70" and set data value to "1".
6. Adjust the data values listed in the table below as the
100% white part on the screen becomes the most
noisy (darkest).
Group No. Adjustment
0 - 3 ADC-Green Gain
0 - 4 ADC-Red Gain
0 - 5 ADC-Blue Gain
7. Select Group "200",No."70" and set data value to"0".
Select Group"200",No."72" and set data value to"1".
[2] Manual adjustment (Component)
Input mode Video mode (Input 2 -Component)
Input signal 100% color bar signal (480i)
100% color bar signal (480p)
100% color bar signal (720p)
100% color bar signal (1080i)
1. Enter the Service mode.
2. At first, input the 100% color bar signal (480i).
Image example of manual adjustment
Black and noisy
image appears
16-step gray scale
White 100%
(MAIN)
(SUB)
for [PC ]
Black 100%
3. Select Group "200",No."72" and set data value to"0".
Select Group "200",No."71" and set data value to"1".
4. Adjust the data values listed in the table below as the
100% white part on the screen becomes the most
noisy (darkest).
Group
0 -
0 -
0 -
5. Select Group"200",No."71" and set data value to"0".
Select Group"260",No."0" and set data value"0" to"1".
6. Adjust the data values listed in the table below as the
100% white part on the screen becomes the
most noisy (darkest).
Group
10 -
10 -
10 -
7. Channge another input signal and take steps 3-6
again.
8. Select Group"200",No."71"and set data value to"1".
Select Group"200",No."72"and set data value to"1".
[3] Manual adjustment (Video)
Input mode Video mode (Input 3 Video)
Input signal 100% color bar signal (480i)
1. Enter the Service mode.
2. Select Group "200", No."72"and set data value to"0".
Select Group "200", No."71"and set data value to"1".
3. Select Group "260", No."0"and set data value"0"to"1".
4. Adjust the data values listed in the table below as the
100% white part on the screen becomes the most
noisy (darkest).
Group No.
20 - 0
5. Select Group"200",No."72"and set data value to"1".
Image example of manual adjustment
for [Component / Video]
Black and noisy
image appears
W Y C
100% full color bar
-43-
No. Adjustment (MAIN)
3 Y Gain
4 Cr/Pr Gain
5 Cb/Pb Gain
No. Adjustment (SUB)
3 Y Gain
4 Cr/Pr Gain
5 Cb/Pb Gain
Adjustment
Y Level
G M R B BK