Sanyo PLC-XF47 Service Manual page 82

Optical adjustment
(8) Prism P.B.S. adjustment
SCREW-B
(9) Polarized glass adjustment (Contrast adjustment)()
SCREW-A
SLOT-A
SCREW-B
LEVER-B
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Adjustment :
1. Input the white raster signal (100% of white raster
signal).
2. Loosen 2 screws-B.
3. Insert a slot screwdriver into slot-A, turn it and adjust
the center position of screen to maximum brightness.
4. Tighten the 2 screws-B to fix the prism PBS unit.
Measure brightness screen center
R, G and B polarized glass unit adjustment :
1. Turn on a projector. And input the black raster sig-
nal (0% of white raster signal).
2. Loosen screw-A on the polarized glass unit which
you intend to adjust using ball allen wrench.
3. Move the lever-B in the direction of an arrow and
adjust the brightness on the screen to the lowest
level of black.
4. Tighten the screw-A to fix the polarized glass unit.
5. Adjust the polarized glass unit of other colors.