Sanyo PLC--XP200L, Service Manual

Page: 41 / 154

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Optical Adjustments
Contrast adjustment
1 Select the internal test pattern signal “All black” from the projector’s menu “Menu -> Setting -> Test pattern”.
Loosen a screw A on the polarized glass holder which you intend to adjust.
3 Turn the lever B of polarized glass to obtain the darkest brightness and proper black color uniformity on the
screen.
4 Turn the lever C of optical filter to obtain the darkest brightness and proper black color uniformity on the screen.
5 Tighten the screw A to fix the polarized glass holder.
Repeat steps to 5 for remaining R and B contrast adjustment.
This adjustment should be taken in order of G-panel, R-panel and B-panel.
This adjustment should be taken in the dark room to adjust precisely.
A
Lever B
(Polarized glass)
Lever c
(optical filer)