Common Center Adjustment - Sanyo PLV-80 Service Manual

Electrical Adjustments
,

Common Center adjustment

1. Receive the 1 line black/white pattern computer sig-
nal with Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Project only green light component to the screen.
200
4. Select group no. " ", item no. "
data value to obtain the minimum flicker on the
screen.
5. Project only red light component to the screen.
19
6. Select item no. " " and change data value to obtain
the minimum flicker on the screen.
7. Project only blue light component to the screen.
20
8. Select item no. " and change data value to obtain
the minimum flicker on the screen.
.
PC Gamma-shift adjustment
1. Receive the 100%whole-white computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Measure luminance on the screen with the luminance
A
meter. It is for the reading of luminance meter.
4. Change the signal source to the 50%whole-white
computer signal with Input 1 [RGB(Analog)] mode.
200
5. Select group no. " ", Item no. "
Data value to make the reading of luminance meter
A x 19%
to be .
PC White Balance adjustment
⁄0
1. Receive the 50%whole-white computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode, select group no. "
28 29
no. " " (Red) or " " (Blue), and change data val-
ues respectively to make a proper white balance.
Confirm that the same white balance is obtained in
video and computer input.
⁄1
1. Receive the 100%whole-white component video sig-
2. Enter the service mode.
3. Measure luminance on the screen with the luminance
18
" and change
4. Change the signal source to the 50%whole-white
5. Select group no. "
⁄2
1. Receive the 100%whole-white component video sig-
2. Enter the service mode, select group no. "
Confirm that the same white balance is obtained in
video and computer input.
27
" and change the
200
", item
NOTE ON WHITE UNIFORMITY
ADJUSTMENT
If you find the color shading on the screen, please
adjust the white uniformity by using the proper com-
puter and "Color Shading Correction" software supplied
separately. The software can be ordered as follows;
-26-
AV Gamma-shift adjustment
nal (Y/Cb/Cr) with Input 3 [Y,Pb/Cb,Pr/Cr] mode.
A
meter. It is for the reading of luminance meter.
computer signal with Input 3 [Y,Pb/Cb,Pr/Cr] mode.
210
", Item no. "
Data value to make the reading of luminance meter
A x 19%
to be .
PC White Balance adjustment
nal (Y/Cb/Cr) with Input 3 [Y,Pb/Cb,Pr/Cr] mode.
28 29
no. " " (Red) or " " (Blue), and change data val-
ues respectively to make a proper white balance.
COLOR SHADING CORRECTION Ver. 4.00
Service Parts No.
27
" and change the
210
", item
645 075 9611