Lcd Panel/Prism Ass'y Replacement - Sanyo PLC-XU40 Service Manual

■ LCD Panel/Prism Ass'y Replacement

IMPORTANT NOTICE on LCD Panel/Prism Ass'y Replacement
LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass'y.
These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced
whole of the LCD panels and prism ass'y at once.
After replacing LCD Panel/Prism ass'y, please check the following points.
- Check that there is no color shading at the top, bottom, left or right of the screen. If there is, try to
remove the shading following to the chapter "Optical Adjustment".
- Check the white balance. If it needs the adjustment, adjust the white balance following to the "White
Balance Adjustment" and "Common Centre Adjustment" in the chapter "Electrical Adjustment".
- Check the white uniformity on the screen.
If you find the color shading at the some part of the screen, it needs to take the color shading adjust-
ment. This adjustment should be performed by a computer and it also requires a special software
"Color Shading Correction". The software will be supplied separately and can be ordered as follows;
LCD Panel/Prism Ass'y removal
1
Remove the cabinet top and main board following to
"Mechanical Disassemblies".
2
Remove 4 screws by using the 2.0 mm hex driver and
take the LCD Panel/Prism ass'y off upward from the
optical unit.
Note on LCD Panel/Prism Ass'y Mounting
After replacing or installing the LCD Panel/Prism ass'y,
please make sure to obtain the best focus in both TELE
and WIDE zoom. If the focus adjustment is required,
please adjust the positioning of LCD Panel/Prism Ass'y by
following below procedure.
Mounting Procedure:
1
Loosen 4 screws A on the LCD Panel/Prism ass'y with
2.0 mm hex driver.
2
Turn the projector on and project the image with WIDE
zoom, and adjust the FOCUS control to obtain the best
focus.
3
Turn the ZOOM control to the TELE position.
4
Move the LCD Panel/Prism Ass'y backward or forward
(about 0mm ~ 0.8mm) to obtain the proper focus.
Confirm the focus at TELE and WIDE zoom.
5
Tighten 4 screws A to fix the LCD Panel/Prism ass'y.
COLOR SHADING CORRECTION Ver. 3.0
Service Parts No. 645 056 6288
-19-
Note:
Do not replace the LCD
panel separately otherwise
it can not obtain proper pic-
ture.
LCD Panel/Prism
Ass'y
Top View
A
A
LCD Panel/Prism Ass'y
A
A