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v Video level adjustment
1 Receive the 16-step grey scale computer signal with
INPUT 2 [RGB] mode.
2 Enter the service mode and select group no. “200”.
3
Connect an oscilloscope to test point “TP_GVID1” (+)
and chassis ground (-). Select item no. “6” and change
data value to adjust the amplitude to be 10.0 ±0.05Vp-p.
4
Connect an oscilloscope to test point “TP_RVID1” (+)
and chassis ground (-). Select item no. “7” and change
data value to adjust the amplitude to be 10.0 ±0.05Vp-p.
5
Connect an oscilloscope to test point “TP_BVID1” (+)
and chassis ground (-). Select item no. “8” and change
data value to adjust the amplitude to be 10.0 ±0.05Vp-p.
(a)
black level
black level
b Input adjustment
PC Input adjustment
1 Receive the 100% whole-white computer signal with
INPUT 2 [RGB] mode.
2 Enter the service mode and select group no. “784”.
3
Select item no. “0” and change data value from “0” (de-
fault) to “1”. The adjustment will be carried out automati-
cally and the data value changes to “2” when finishing the
auto-adjustment correctly.
If the data value changes to “-1”, take adjustment above
again until the data is “2”.
AV Input adjustment
1 Receive the 100% whole-white component signal with
INPUT 2 [Y/Cr/Cb] mode.
2 Enter the service mode and select group no. “783”.
3
Select item no. “0” and change data value from “0” (de-
fault) to “1”. The adjustment will be carried out automati-
cally and the data value changes to “2” when finishing the
auto-adjustment correctly.
If the data value changes to “-1”, take adjustment above
again until the data is “2”.
Electrical Adjustments
c DC adjustment
1 Receive the 16-step grey scale computer signal with
INPUT 2 [RGB] mode.
2 Enter the service mode and select group no. “200”.
3 Connect a digital voltmeter to test point “TPV1G” (+)
and chassis ground (-). Select item no. “0” and change
data value to adjust voltage to be 6.5 ±0.1V.
4 Connect a digital voltmeter to test point “TPV1R” (+)
and chassis ground (-). Select item no. “1” and change
data value to adjust voltage to be 6.5 ±0.1V.
5 Connect a digital voltmeter to test point “TPV1B” (+)
and chassis ground (-). Select item no. “2” and change
data value to adjust voltage to be 6.5 ±0.1V.
6 Connect a digital voltmeter to test point “TPV2G” (+)
and chassis ground (-). Select item no. “3” and change
data value to adjust voltage to be 7.5 ±0.1V.
7 Connect a digital voltmeter to test point “TPV2R” (+)
and chassis ground (-). Select item no. “4” and change
data value to adjust voltage to be 7.5 ±0.1V.
8 Connect a digital voltmeter to test point “TPV2B” (+)
and chassis ground (-). Select item no. “5” and change
data value to adjust voltage to be 7.5 ±0.1V.
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