Sanyo PLC-XE40 - Computer System Selection

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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. “
9”, item no. “127” 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. “
128” 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. “
129 and change data value to obtain
the minimum flicker on the screen.
. Common Center 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. “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.
⁄1 White Balance adjustment [PC]
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. “124” and change data
value to adjust amplitude “a” to be 10.0 ±0.1V.
5. Connect an oscilloscope to test point “TPR1” (+) and
chassis ground (-).
6. Select item no. “
125” and change data value to
adjust amplitude “a” to be 10.0 ±0.1V.
7. Connect an oscilloscope to test point “TPB1” (+) and
chassis ground (-).
8. Select item no. “
126” and change data value to
adjust amplitude “a” to be 9.0 ±0.1V.
(a)
black level
black level
, Black Reference 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. “6” and change data
value to adjust amplitude “a” to be 1.6 ±0.1V.
(a)
white level
white level
⁄0 50% White adjustment [PC]
1. Receive the 16-step grey scale composite 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. “0” and adjust the
amplitude “a” to be minimum by changing the Data
value.
5. Connect an oscilloscope to test point “
TPR1” (+) and
chassis ground (-).
6. Select item no. “
1” and adjust the amplitude “a” to be
minimum by changing the Data value.
7. Connect an oscilloscope to test point “TPB1” (+) and
chassis ground (-).
8. Select item no. “
2” and adjust the amplitude “a” to be
minimum by changing the Data value.
(a)
White Level
m Gain adjustment [Video]