- 45 -
n Gain adjustment
PC gain 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. “15” and change
data value to
adjust the amplitude “a” to be minimum.
4
Connect an oscilloscope to test point “TP_RVID1” (+)
and chassis ground (-). Select item no. “16” and change
data value to
adjust the amplitude “a” to be minimum.
5
Connect an oscilloscope to test point “TP_BVID1” (+)
and chassis ground (-). Select item no. “17” and change
data value to
adjust the amplitude “a” to be minimum.
AV gain adjustment
1 Receive the 16-step grey scale component signal with
INPUT 2 [Y/Cr/Cb] mode.
2 Enter the service mode and select group no. “210”.
3
Connect an oscilloscope to test point “TP_GVID1” (+)
and chassis ground (-). Select item no. “15” and change
data value to
adjust the amplitude “a” to be minimum.
4
Connect an oscilloscope to test point “TP_RVID1” (+)
and chassis ground (-). Select item no. “16” and change
data value to
adjust the amplitude “a” to be minimum.
5
Connect an oscilloscope to test point “TP_BVID1” (+)
and chassis ground (-). Select item no. “17” and change
data value to
adjust the amplitude “a” to be minimum.
m Common center adjustment
1 Receive the 1 line black/white pattern computer signal
with INPUT 2 [RGB] mode.
2 Enter the service mode and select group no. “200”.
3 Project only green light component to the screen.
4 Select item no. “18” 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. “19” 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. “20 and change data value to obtain
the minimum flicker on the screen.
, PC white balance adjustment
1 Set projector with 2-lamp mode.
2 Receive the 50% whole-white computer signal with IN-
PUT 2 [RGB] mode.
3 Enter the service mode and select group no. “200”.
4 Select item no. “27” (Green), “28” (Red) or “29” (Blue),
and change data values respectively to make a proper
white balance.
. Gamma shift adjustment
1 Set projector with 2-lamp mode.
2 Enter the service mode and select group no. “210”.
G-Gamma shift
3 Receive the 100% whole-green component signal with
INPUT 2 [Y/Cb/Cr] mode.
4 Measure luminance on the screen with the luminance
meter. It is A for the reading of luminance meter.
5 Change the signal source to the 50% whole-green
component signal.
6 Select item no. “21” and change data value to make the
reading of luminance meter to be A x 0.22.
R-Gamma shift
3 Receive the 100% whole-red component signal with
INPUT 2 [Y/Cb/Cr] mode.
4 Measure luminance on the screen with the luminance
meter. It is A for the reading of luminance meter.
5 Change the signal source to the 50% whole-red com-
ponent signal.
6 Select item no. “22” and change data value to make the
reading of luminance meter to be A x 0.22.
B-Gamma shift
3 Receive the 100% whole-blue component signal with
INPUT 2 [Y/Cb/Cr] mode.
4 Measure luminance on the screen with the luminance
meter. It is A for the reading of luminance meter.
5 Change the signal source to the 50% whole-blue com-
ponent signal.
6 Select item no. “23” and change data value to make the
reading of luminance meter to be A x 0.22.
⁄0 AV white balance adjustment-1
1 Set projector with 2-lamp mode.
2 Receive the 100% whole-white component signal with
INPUT 2 [Y/Cb/Cr] mode.
3 Enter the service mode and select group no. “210”.
4 Select item no. “24” (Green), “25” (Red) or “26” (Blue),
and change data values respectively to make a proper
white balance.
Electrical Adjustments
To Next Page
Loading...
