ViewSonic PJ501 Service Manual page 9

4-3 Flicker adjustment (V.COM adjustment)
Signals for internal adjustment
PJ501 ONLY
4-4 PSIG-G adjustment
Signals for internal adjustment
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4-4-1 PSIG-B adjustment
Signals for internal adjustment
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ViewSonic Corporation
(vertical stripe adjustment)
(vertical streaks adjustment)
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Adjustment procedure
1. Make this adjustment after completing the
adjustment in 4-2 Ghost adjustment.
2. Use DAC-P - V.COM - R: in the Adjustment menu
to adjust so that the flicker at the center of the
screen is less than the flicker at the periphery.
(When the flicker is about the same across the
whole screen, adjust so that the flicker at the
center of the screen is somewhat less than
elsewhere.)
3. In the same way, use DAC-P - V.COM-G: in the
Adjustment menu to adjust the G color flicker.
4. In the same way, use DAC-P - V.COM-B: in the
Adjustment menu to adjust the B color flicker.
Adjustment procedure
1. Make this adjustment after completing the
adjustment in 4-3 Flicker adjustment.
2. Use DAC-P - PSIG - G: in the Adjustment menu to
adjust so that the vertical lines spaced every 6 or
12 dots are as inconspicuous as possible.
Adjustment procedure
1. Make this adjustment after completing the
adjustment in 4-3 Flicker adjustment.
2. Use DAC-P - PSIG - B: in the Adjustment menu to
adjust so that the vertical streaks on the upper of
window pattern.
6
Confidential - Do Not Copy
PJ501/PJ551