Optical Parts Disassembly; Lcd Panel Type Check - Panasonic PT-EX600U Service Manual

Optical Parts Disassembly

Before taking this procedure, remove the cabinet top, main&AV board assy, projection lens, lamp assy and shutter
assy refer to the "Mechanical disassembly".
Disassembly requires a 2.0mm hex wrench and a screwdriver.
Note:To remove the LCD panel/prism assy and polarized glass-in, open the prism cover and then remove the shutter
assy first.
1. LCD panel/prism assy removal
1. Open the prism cover to removal shutter assy.
(refer to chapter"Quick maintenance"for detailed
information of open the prism cover to removal
shutter assy)
2. Loosen 3 screws-D and pull the panel/prism assy
upward (Fig.1) .
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 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
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".
G-Panel
-33-
E
E
D
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 com-
mercial (inert gas) air spray to remove them.
R-Type LCD Panel/Prism assy
GR
L-Type LCD Panel/Prism assy
GL
D
E
E
D
Fig. 1
E