Contrast Adjustment - Christie LX1750C Service Manual

Optical Adjustment

3. Contrast adjustment

Before adjustment :
1
Remove the shutter assy on the prism/LCD panel assy.
2
Select the internal test pattern signal "All black" from the projector's menu "Menu -> Setting -> Test pattern".
Adjustment :
1
A
Loosen 1 screw on the polarized glass mounting base and 1 screw
2
Turn the polarized glass mounting base with lever
formity on the screen.
3
Turn the optical filter(HCP) mounting base with lever
uniformity on the screen.
4
A
Tighten the screws
Repeat steps 2 to 5 for remaining R and B contrast adjustment.
The adjustment should be taken in order of G-panel, R-panel and B-panel and taken in the darkest room to adjust
preciously.
R-polarized glass assy
LX1750 Service Manual
020-000643-01 Rev.1 (01-2014)
C
and to fix the optical filter and polarized glass mounting base.
B
A
C
on the optical filter(HCP) mounting base.
B
to obtain the darkest brightness and proper black color uni-
D
to obtain the darkest brightness and proper black color
D
C
-67-
G-polarized glass assy
B-polarized glass assy