Panasonic PT-VW430E, Service Manual

Page: 30 / 129

-30-
Optical Parts Disassembly
Before taking this procedure, remove Cabinet Top and MAIN Board following to the “Mechanical Disassembly”.
Disassembly requires a 2.0mm hex wrench.
LCD panel/
prism assy
Fig.1
1. LCD panel/prism assy removal
*Note on handling the LCD panel/prism assy
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.
IMPORTANT NOTICE on LCD panel/prism assy replacement
LCD panels used for this model cannot be replaced separately. Do not disassemble the LCD panel/prism assy.
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 assy at once.
When replacing LCD panel/prism assy, take the optical and electrical adjustments following to the chapter "Adjust-
ment".
1. Remove 4 hex-screw A (M2.5x7.8) to take the LCD panel/prism assy upward
off.
A
A
A
A
There are 2 types of LCD panel/prism assy for this model. Either L-type or R-type LCD panel/prism assy is used on
the projector. Check which type of LCD panel/prism assy is used with the figure below.
When replacing the LCD panel/prism assy, you need to take "Panel type check and setting" on the electrical adjust-
ment for the replaced LCD panel/prism assy.
The gamma-characteristics are different between L-type and R-type LCD panel/prism assy.
How to check the type of LCD panel assy
Check the printed marker on the flat cable of the G-LCD Panel.
GR --> R-type LCD panel/prism assy
GL --> L-Type LCD panel/prism assy
LCD panel type check
GR
GL
L-Type LCD Panel/Prism assy
R-Type LCD Panel/Prism assy
G-Panel