-25-
Electrical Adjustments
t1. 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
NOTE ON WHITE UNIFORMITY
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. “
10
”, item no. “
3
” and change data
value to adjust amplitude “a” to be
9.8
±0.1V.
5. Connect an oscilloscope to test point “
TPR1
” (+) and
chassis ground (-).
6. Select item no. “
4
” and change data value to adjust
amplitude “a” to be
9.8
±0.1V.
7. Connect an oscilloscope to test point “
TPB1
” (+) and
chassis ground (-).
8. Select item no. “
5
” and change data value to adjust
amplitude “a” to be
9.8
±0.1V.
(a)
black level
black level
.
Black Reference adjustment
[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
112⁄1
Gamma adjustment