Optical Parts Disassembly - Sanyo PLC-WM4500L Service Manual

Optical Parts Disassembly

Before taking these procedures, remove the cabinet top, Main board assy, shutter assy referring to the chapter "Me-
chanical Disassembly".
1. LCD Panel/Prism Assy removal
1. Open the Prism Cover.
2. Loosen 3 screws-D and pull the Panel/Prism Assy upward.
Panel/Prism Assy
Lcd Panel type check
There are 2 types combination of the LCD panel/prism assembly and the optical unit, named Type-R and Type-L.
Since both have no compatibility, each type should be combined with the same type, and the specific parts should
be used. If not, the poor optical characteristics may degrade the quality of a projected image.
How to check the type of Lcd Panel Ass'y
Check the printed marker on the flat cable of the G-LCD Panel.
GR --> R-type LCD Panel/Prism Ass'y
GL --> L-Type LCD Panel/Prism Ass'y
IMPortANt NotIce on Lcd Panel/Prism Ass'y replacement
LCD panels used for this model cannot 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.
When replacing LCD Panel/Prism ass'y, take the optical and electrical adjustments following to the chapter "Ad-
justment".
G-Panel
E
E
* Note on handling the Lcd Panel/Prism Assy
LCD Panel, Polarized glasses are very sensitive parts.
Never touch or wipe the surface. When removing the dust
on the surface, use a commercial (inert gas) air spray to
remove them.
r-type Lcd Panel/Prism Ass'y
GR
L-type Lcd Panel/Prism Ass'y
GL
-27-
D
D
D
E E
E
E