ViewSonic PJ452 - LCD XGA Projector-4.9LBS Service Manual page 9

4-2 Convergence adjustment
Signal pattern for internal adjustment
Adjustment procedure
4-3 E-POS adjustment(vertical bars adjustment)
Signal pattern for internal adjustment
112/255
4-4 Ghost adjustment
Signals for internal adjustment
30%
30%
0/255
112/255
ViewSonic Corporation
1. Open FACTORY MENU and then select
OPTION > CNV-V. Use R and/or B so that
three colors of images can be converged at
center, top and bottom of the screen.
2. In the same way, select OPTION > CNV-H and
use R and/or B so that three colors of images
can be converged at center, left and right of the
screen.
Adjustment procedure
1. Make this adjustment after completing the
adjustment 4-2 Convergence adjustment.
2. Choose Advance menu > OPTION > SERVICE
> GHOST > R,G and B, and set them to zero.
3. Open FACTORY MENU. Select DAC-P > E-POS
> R and use it so that vertical bars can disappear.
4. In the same way, select DAC-P > E-POS > G
and use it so that vertical bars can disappear.
5. In the same way, select DAC-P > E-POS > B
and use it so that vertical bars disappear.
Adjustment procedure
1. Make this adjustment after completing the
adjustment in 4-3.
2. Choose Advance menu > OPTION > SERVICE
> GHOST > R,G and B, and set them to zero.
3. Use DAC-P - GHOST - R: in the FACTORY MENU
to adjust so that R color ghost is at a minimum.
(Set the adjustment value to default, and then
raise the value. When a ghost appears to the left
of a vertical line, reduce the value by 4 steps.)
4. In the same way, use DAC-P - GHOST-G: in
the FACTORY MENU to adjust so that G color
ghost is at a minimum.
5. In the same way, use DAC-P - GHOST-B: in
the FACTORY MENU to adjust so that B color
ghost is at a minimum.
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PJ452