Sanyo PLC-WXE46, Service Manual

Page: 31 / 108

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1. Enter the service mode.
. Receive the 50%-Whole Gray computer signal with
Computer1 [RGB] mode.
3. Select group no. “
100
”, item no. “
92
” and change
data value to “
2
” to reduce the panel frequency.
4. Project only green light component to the screen.
5. Select group no. “
101
”, item no. “
1
” and change data
value to obtain the minimum flicker on the screen.
6. Project only red light component to the screen.
7. Select item no. “
0
” and change data value to obtain
the minimum flicker on the screen.
8. Project only blue light component to the screen.
9. Select item no. “
2
and change data value to obtain
the minimum flicker on the screen.
10. Select group no. “
100
”, item no. “
92
” and change
data value to “
0
” to reset the panel frequency.
8. Common Center adjustment
Electrical Adjustments
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
nal with
Video[Video]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+)
and chassis ground (-).
4. In Standard mode, select group no. "
100
", item no.
"
235
" and change data value to "
0
".
5. Select group no. “
100
”, item no. “
6
” and change data
value to adjust amplitude “
a
” to be
0.85V
.
6. select group no. "
100
", item no. "
235
" and change
data value to "
1
".
(a)
white level
white level
11. 50% White adjustment [Video]
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
nal with
Video[Video]
mode.
3. Select group no. “
100
” item no. “
7
” (Red) or “
8
” (Blue),
and change Data values respectively to make a prop-
er white balance.
Confirm that the same white balance is obtained in video
and computer input.
12. White Balance adjustment [Video]
If the correction of the Color shading adjustment is neces-
sary, please adjust the "Color shading" by using the "COLOR
SHADING CORRECTION" software supplied separately.
The color shading correction adjustment for this model
should be performed with the whole-gray patterns speci-
fied as below.
4-input patterns:
6% gray, 12.5% gray, 25% gray, 50% gray
13. Color Shading Correction adjustment
The Color Shading Correction can be ordered with following
service code.
COLOR SHADING CORRECTION Ver. 4.00
Service Parts No. 645 075 9611
1. Enter the service mode,
. Receive the 16-step gray scale computer signal with
Computer1 [RGB]
mode.
3. Select group no. “
100
” item no. “
7
” (Red) or “
8
” (Blue),
and change Data values respectively to make a prop-
er white balance.
Confirm that the same white balance is obtained in video
and computer input.
10. White Balance adjustment [PC]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
Computer1 [RGB]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+)
and chassis ground (-).
4. In Standard mode, select group no. " 100 ", item no.
" 235 " and change data value to " 0 ".
5. Select group no. “
100
”, item no. “
6
” and change data
value to adjust amplitude “
a
” to be
1.6V
.
6. select group no. " 100 ", item no. " 235 " and change
data value to " 1 ".
(a)
white level
white level
9. 50% White adjustment [PC]