Sanyo PLC-XF46E, Service Manual

Page: 76 / 186

Optical adjustment
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SCREW-B
SLOT-A
(8) Prism P.B.S. adjustment
(9) Contrast adjustment (Polarized glass unit adjustment)
R, G and B polarized glass unit adjustment :
1. Turn on a projector. And input the black raster
signal (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 polarizer unit.
5. Adjust the polarizer of other colors.
LEVER-B
SCREW-A
Adjustment :
1. Remove the flexible cables of LCD panels from the
Main board. And turn on the projector.
And 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
Fig.62a
Fig.62
Fig.63
SCREW-B