Common Center Adjustment - Sanyo PLC-XL50A Service Manual

6. Common Center adjustment

1. Enter the service mode.
2. Receive the 50%-Whole Gray computer signal with
Computer1 [RGB] mode.
100
3. Select group no. " ", item no. "
2
value to " " to reduce the panel frequency.
4. Project only green light component to the screen.
101
5. Select group no. " ", item no. "
value to obtain the minimum flicker on the screen.
6. Project only red light component to the screen.
0
7. Select item no. " " and change data value to obtain the
minimum flicker on the screen.
8. Project only blue light component to the screen.
2
9. Select item no. " and change data value to obtain the
minimum flicker on the screen.
100
10. Select group no. " ", item no. "
0
value to " " to reset the panel frequency.
7. 50% White adjustment [PC]
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
Computer1 [RGB]
mode.
3. Connect an oscilloscope to test point "
chassis ground (-).
100
4. Select group no. " ", item no. "
a
to adjust amplitude " " to be
white level
white level
8. White Balance adjustment [PC]
1. Enter the service mode,
2. Receive the 16-step gray scale computer signal with
Computer1 [RGB]
mode.
100
3. Select group no. " " item no. "
change Data values respectively to make a proper white
balance.
Confirm that the same white balance is obtained in video
and computer input.
92
" and change data
1
" and change data
92
" and change data
TP35G
" (+) and
6
" and change data value
1.6 ±0.1V
.
(a)
7 8
" (Red) or " " (Blue), and
9. 50% White adjustment [Video]
1. Enter the service mode.
2. Receive the 16-step grey scale composite video signal
Video[Video]
with
3. Connect an oscilloscope to test point "
chassis ground (-).
100
4. Select group no. "
to adjust amplitude "
white level
white level
10. White Balance adjustment [Video]
1. Enter the service mode.
2. Receive the 16-step grey scale composite video signal
Video[Video]
with
100
3. Select group no. "
change Data values respectively to make a proper white
balance.
Confirm that the same white balance is obtained in video
and computer input.
- 45 -
Service Adjustment
mode.
TP35G
6
", item no. " " and change data value
a 1.6 ±0.1V
" to be .
(a)
mode.
7 8
" item no. " " (Red) or " " (Blue), and
" (+) and