Sanyo PLC-XU75 Service Manual

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1. Receive the 16-step grey scale composite video sig-
nal with Video mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP_G1” (+)
and chassis ground (-).
4. Select group no. “100”, item no. “6” and change data
value to adjust amplitude “a” to be 2.2 ±0.1V.
(a)
white level
white level
. 50% White adjustment [Video]
1. Receive the 16-step grey scale composite video sig-
nal with Video mode.
2. Enter the service mode, select group no. “100” item
no. “7” (Red) or “8” (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.
⁄0 White Balance adjustment [Video]
Note On White Uniformity Adjustment
If you find the color shading on the screen, please ad-
just the white uniformity by using the proper computer
and “Color Shading Correction” software supplied sep-
arately.
The software can be ordered as follows;
COLOR SHADING CORRECTION Ver. 4.00
Service Parts No. 645 075 9611
1. Enter the service mode,
2. 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.
, White Balance 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 “TP_G1” (+)
and chassis ground (-).
4. Select group no. “100”, item no. “6” and change data
value to adjust amplitude “a” to be 1.6 ±0.1V.
(a)
white level
white level
m 50% White adjustment [PC]
1. Enter the service mode.
2. 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.
n Common Center adjustment

Sanyo PLC-XU75 Specifications

General

Brand	Sanyo
Model	PLC-XU75
Category	Projector
Language	English