Sanyo PLC-XU40 Service Manual page 29

Electrical Adjustments
⁄0
Signal Offset adjustment [PC]
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "
and chassis ground (-).
10
4. Select item no. " " and adjust the amplitude "a" to
2.4
be ±0.1V by changing the Data value.
white level
(a)
⁄1
Signal Offset adjustment [AV]
1. Receive the 16-step gray scale composite video sig-
nal with Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "
and chassis ground (-).
10
4. Select item no. " " and adjust the amplitude "a" to
2.4
be ±0.1V by changing the Data value.
white level
(a)
TP503G
" (+)
white level
TP503G
" (+)
white level
-29-
⁄2
White Balance adjustment
[PC WHITE BALANCE ADJUSTMENT]
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB] mode.
2. Enter the service mode, select item no. "
12
" " (Blue), and change Data values respectively to
make a proper white balance.
[AV WHITE BALANCE ADJUSTMENT]
3. Receive the 16-step gray scale composite video sig-
nal with Video [Video] mode.
4. Enter the service mode, select item no. "
12
" " (Blue), and change Data values respectively to
make a proper white balance.
Confirm that the same white balance is obtained in
video and computer input.
NOTE ON WHITE UNIFORMITY
ADJUSTMENT
If you find the color shading on the screen, please
adjust the white uniformity by using the proper comput-
er and "Color Shading Correction" software supplied
separately. The software can be ordered as follows;
COLOR SHADING CORRECTION ver.. 3.0
Service Parts No.
11
" (Red) or
11
" (Red) or
645 056 6288