Sanyo PLV-Z4000 Service Manual page 46

Optical Adjustmeent
1. contrast adjustment (Polarized glass and optical filter)
[ Before Adjustment ]
- Input a 100% of black raster signal.
- Input image mode : dynamic
A
1. Loosen a screw on the optical base which you intend to adjust.
B
2. Adjust the slot to obtain the darkest brightness on the screen.
(Polarized glass adjustment.)
c
3. Adjust the slot to obtain the darkest brightness on the screen.
(Optical filter adjustment.)
A
4. Tighten the screw to fix the polarized glass mounting base.
Repeat steps 1 to 4 for remaining polarized glasses.
Blue Optical filter is not adjusted.
Polarized glass
Screw-A
Slot-B
Slot-c
optical filter
Slot-c
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Slot-B
Screw-A
Slot-c
Slot-B