Sanyo PLC-XU50, Руководство пользователя, Страница: 6 / 72

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Electrical Adjustments
1. Receive the 1 line black/white pattern computer sig-
nal with Computer2 [RGB] mode.
2. Enter the service mode.
3. Project only green light component to the screen.
4. Select group no. “
10
”, item no. “
9
” and change data
value to obtain the minimum flicker on the screen.
5. Project only red light component to the screen.
6. Select item no. “
10
” and change data value to obtain
the minimum flicker on the screen.
7. Project only blue light component to the screen.
8. Select item no. “
11
and change data value to obtain
the minimum flicker on the screen.
⁄0
Common Center adjustment
[PC WHITE BALANCE ADJUSTMENT]
1. Receive the 16-step gray scale computer signal with
Computer2 [RGB] mode.
2. Enter the service mode, select group no. “
9
” item no.
“
11
” (Red) or “
12
” (Blue), and change Data values
respectively to make a proper white balance.
[AV WHITE BALANCE ADJUSTMENT]
1. Receive the 16-step gray scale composite video sig-
nal with Video [Video] mode.
2. Enter the service mode, select group no. “
9
” item no.
“
11
” (Red) or “
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.
⁄2
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 ver. 3.0
Service Parts No. 645 056 6288
[PC-GAMMA ADJUSTMENT]
1. Receive the 16-step grey scale computer signal with
Computer2 [RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPG1
” (+)
and chassis ground (-).
4. Select group no. “
9
”, item no. “
10
” and change data
value to adjust amplitude “a” to be
2.0
±0.1V.
[AV-GAMMA ADJUSTMENT]
1. Receive the 16-step grey scale video signal with
Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPG1
” (+)
and chassis ground (-).
4. Select group no. “
9
”, item no. “
10
” and change data
value to adjust amplitude “a” to be
1.3
±0.1V.
(a)
white level
white level
⁄1
Gamma adjustment
1. Receive the 16-step gray scale computer signal with
Computer2 [RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPG1
” (+) and
chassis ground (-).
4. Select group no. “
10
”, item no. “
12
” and adjust the
amplitude “a” to be
4.5
±0.1Vp-p by changing the
Data value.
5. Select item no. “
15
” and adjust the amplitude “b” to be
0.0
±0.1Vp-p by changing the Data value.
(a)
(b)
.
NRS adjustment
NOTE ON WHITE UNIFORMITY
ADJUSTMENT