Sanyo PLC-XF71, Service Manual

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Optical Adjustment
3. Contrast adjustment
1
Select the internal test pattern signal "All black" from the projector's menu "Menu -> Setting -> Test pattern".
2
Loosen 1 screw
A
on the polarized glass mounting base and 1 screw
c
on the optical filter(HCP) mounting base.
3
Turn the polarized glass mounting base with lever
B
to obtain the darkest brightness and proper black color uni-
formity on the screen.
4
Turn the optical filter(HCP) mounting base with lever
d
to obtain the darkest brightness and proper black color
uniformity on the screen.
5
Tighten the screws
A
and
c
to fix the optical filter and polarized glass mounting base.
Repeat steps 1 to 5 for remaining R and B contrast adjustment.
The adjustment should be taken in order of G-panel, R-panel and B-panel.
D
C
A B