Sanyo PLC-XP57L, Service Manual

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Electrical Adjustments
1. Receive the 100% whole-white composite video sig-
nal with Input 3 [Video] mode.
2. Enter the service mode.
3. Measure luminance on the screen with the luminance
meter. It is
B
for the reading of luminance meter.
4. Change the signal source to the 50% whole-white
signal with Input 3 [Video] mode.
5. Select group no. “
210
”, item no. “
15
” and change data
value to make the reading of luminance meter to be
B x 22±1%
.
Note:
If the luminance meter is not equipped, you can take
another method instead as follows;
1. When the main board is replaced, the data value at
group no. “
210
”, item no. “
15
” of the previous main
board should be copied manually.
⁄2
AV Gamma-shift adjustment
1. Receive the 50% whole-white composite video signal
with Input 3 [Video] mode.
2. Enter the service mode, select group no. “
210
”, item
no. “
16
” (Blue) or “
17
” (Red), and change data values
respectively to make a proper white balance.
Confirm that the same white balance is obtained in
video and computer input.
⁄3
AV White Balance 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 SOFTWARE
Service Parts No. 645 075 9611
NOTE ON WHITE UNIFORMITY
ADJUSTMENT