Read Panasonic PT-LW362 / PT-LW312 / PT-LB412 / PT-LB382 / PT-LB332 (serv.man4) Service Manual online
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GR
GL
L-
type Optical block
R-type Optical block
G-Optical block
Lighting block Disassembly
Before taking the procedure, remove cabinet top and main board following to the "Mechanical Disassembly".
Disassembly tools: 2.0mm hex wrench and screwdriver.
Optical block
Fig. 1
Fig. 1-1
Fig. 1-2
1. Optical block removal
* Note on handling the optical block
Optical block and polarized glasses are
very sensitive parts.
Use air blower to clear the dust on the
surface of the Optical block
(for more details about handling the inorganic
polarized glass, please read the page 29).
polarized glass, please read the page 29).
Important notice on Optical block replacement
The Optical block used for this model cannot
be replaced separately. Do not disassemble the
Optical block. These Optical block are installed with
precision at the factory. When replacing the Optical
block, should be replaced whole of the Optical block
at once.
After replacing Optical block, take the optical and
electrical adjustments following to the chapter
"Adjustment".
1. Remove 2 screw A (M3x8) and pull out the lens/Optical block.
2. Remove 4 screw B (M2.5x8), remove the Optical block.
There are 2 types of optical block, named R-type and L-type.
When replacing the optical block, check the printed marker on the flat cable of the G-LCD panel and
use the same type of the optical block. If not used the same type, you will find the color shading or
wrong white balance picture on the screen.
How to check Optical block model
Please check the print serial number on the G-Optical block 's cable.
GR --> R-Optical block
GL --> L-Optical block
Check Optical block model
Top view of LCD panel/prism assy
G-LCD panel
B-LCD panel
Polarized glass OUT(B)
Polarized glass OUT(G)
Polarized glass OUT(R)
R-LCD panel
B B
B B
A
A
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