Panasonic PT-VW360 / PT-VX430 / PT-VX431K (serv.man3) Service Manual ▷ View online
DIS-15
SECTION 2 DISASSEMBLY PROCEDURE
<VW360/VX430/VX431K>
Polarizer-out(G)
Optical block
4. Mount a new polarizer onto the correct position carefully.
While mounting, Do not touch or scratch the contact pro-
hibition area on the surface of in-coming side of polar-
izer.
3.2. Polarizer-out replacement
1. Remove each polarizer. As the polarizers are attached
with adhesive tape, remove them carefully.
Polarizer-out(G)
(Inorganic type)
Polarizer-out(R)
(Organic type)
AL evaporated side
(In-coming side)
Polarizer-out(B)
(Inorganic type)
AL evaporated side
(In-coming side)
Green marker
Red marker
Blue marker
2. Cleanly remove the fragment of old adhesive tape on the
optical block.
3. Attach 2 adhesive tapes on the surface of out-going side
of a new polarizer as shown in the figure.
2.0mm
2.0mm
2.0mm
2.0mm
2.0mm
2.0mm
Adhesive tape
Out-going side
Polarizer OUT(G)
Flat screw driver
• Insert the edge of flat screw driver into the adhesive part of
the polarizer and remove it bit by bit by turning the driver.
(See below figure)
Polarizer-out(G)
Mounting posi-
tion guide(left)
Mounting posi-
tion guide(top)
Polarizer-
out(G)
Mounting posi-
tion guide(top)
• Insert the polarizer into the optical block from the side as
shown in the figure and place it along the mounting posi-
tion guides (left) and guides (top).
• After placing, press the both of the side edges gently to
fix the polarizer. Confirm that the polarizer is mounted in
parallel with the surface of panel and prism.
5. Replace remaining polarizer-out (B) and (R) with the
same procedure.
6. After completing the mounting, project the cross-hatch
pattern to check that there is no miss-convergence on the
screen.
When replacing, pay attention not to scratch or break the
surrounding parts (Prism , LCD panel, etc.). As the part of
LCD panels are adjusted preciously at the factory, handle
the optical block not to apply any power force on it. We
recommend that the projection lens should be mounted on
the optical block while taking the replacement.
Before replacing the polarizer, refer to "Note on handling of inorganic polarizer"
.
The adhesive tapes should be attached within 2.0mm
from the edge. After attaching, remove the protection
sheet on it
.
DIS-16
SECTION 2 DISASSEMBLY PROCEDURE
<VW360/VX430/VX431K>
3.3. Iris unit removal
1. Remove 2 screws-A to remove the PC sheet and metal.
2. Remove 1 screw-B to remove the Iris unit.
PC Sheet
Metal
Iris
A
A
B
A B
When removing the iris assy, take the iris with its
blades closed. When turning the gear on the iris in the
arrow direction, the blades of iris will be closed. Do not
touch the blades because they are precious parts.
A
A
A
3.4. Polarizer-in assy removal
1. Remove each 1 screw-A on the polarizer holder and pull the polarizer-out up-
ward carefully.
Polarizer-in assy
Polarizer-in(G)
(Organic type)
Polarizer-in(B)
(Inorganic type)
Polarizer-in(R)
(Organic type)
A
Polarizer is not removed from the mounting base
.
DIS-17
SECTION 2 DISASSEMBLY PROCEDURE
<VW360/VX430/VX431K>
Condenser lens (OUT)
Condenser lens-out assy
(M2.5x6)
3.5. Condenser lens-out removal
1. Remove 2 screws-A and remove the condenser lens-out assy upward off.
A
A
A
Integrator lens-in
Integrator lens assy
Integrator lens cover
* Rugged surface
facing to the PBS.
Integrator lens (OUT)
* Rugged surface
facing to the PBS
Light mask
PBS
Integrator lens-in shield
Marker
Cutting edge
comes to this
side.
Prism beam
splitter (PBS)
A
3.6. PBS and integrator lenses removal
1. Remove 1 screw-A and remove the integrator lens cover.
A
DIS-18
SECTION 2 DISASSEMBLY PROCEDURE
<VW360/VX430/VX431K>
3.7. Lighting case cover removal
1. Unhook 4 hooks to remove the lighting case cover.
Lighting case cover
Hooks
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