Sanyo PLC-XF30 Service Manual page 40

Prism P.B.S. adjustment
SLOT-A
SCREW-B
SCREW-B
Polarizer adjustment
LEVER-B
SCREW-A
Adjustment :
1. Remove the flexible cables of LCD panels from the
assembly Main. And turn on the projector.
2. Loosen two 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 two screws-B to fix the prism PBS unit.
R, G and B polarizer adjustment :
1. Turn on a projector. And input the black
SCREW-A
raster signal(0% of white raster signal.)
2. Loosen two screws-A on the polarizer unit
which you intend to adjust using ball allen
wrench.
3. Block the lights of the color which do not
adjust using light block sheets.
4. Move the lever-B in the direction of an arrow
and adjust the brightness on the screen to the
Y/V
lowest level of black.
5. Tighten the two screws-A to fix the polarizer
unit.
6. Adjust the polarizer of other colors.
-48-
Y/V