Panasonic PT-VW431DU / PT-VW431DE / PT-VW431DEA Service Manual ▷ View online
-21-
Mechanical Disassembly
1. Remove 5 screws-A (T3x6) to remove the filter spacer and light spacer and
antitheft lock shield, then release the 6 hooks to remove the AV panel.
2. Remove 2 screws-B (M3x6) to remove
AC 1ST FILTER
board.
3. Remove 2 screws-C (M3x6) and 1 screw-D (M4x6) to remove the AC inlet.
4. Remove 4 hex-screws-E and 1 screw-F (M3x6) to remove the MAIN board.
MAIN board
A
C
Filter spacer
AV panel
3-1. MAIN and AV board removal
B
B
D
F
E
AC 1st filter board
Antitheft lock shield
Light spacer
AV board
AV shield
A
A
A
A
C
Hooks
Fig.3-1
-22-
Mechanical Disassembly
1. Remove 3 screws-A(T3x8) to remove the fan(FN910).
Remove 2 screws-B(T3x8) to remove the DEC ring.
2. Loosen 3 screws-C to remove the lamp assy (LP900).
3. Remove 4 screws-D (T3x8) to remove the optical unit.
4. Remove 3 screws-E (T2.5x8) to remove optical shield
and Iris assy.
Fig.4
Lamp assy
(LP900)
Optical unit
D
B
Optical shield
B
C
C
C
A
A
FN910
DEC ring
D
A
D
Iris assy
4. Fan(FN910), lamp assy(LP900),optical unit removal
D
E
E
E
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
bacause they are precious parts.
Turn the wire from the fan at the
hook on the lamp holder.
-23-
Mechanical Disassembly
5. Fan(FN908), lamp holder , speaker removal
Fig.5
1. Remove 2 screws-A (T3x12) and 1 screw-B(T3x8) to remove the fan & fan duct assy.
2. Remove 4 screws-B (T3x8) to remove the lamp holder.
3. Remove 1 screw-C (T3x8) to remove the ID CONNECT board and 1 screw-D (T2x10)
to remove the lamp cover switch(SW901). Remove 1 screw-E(T3x8) to remove the
thermal fuse (SW902). Remove 1 screw-F(T3x8) to remove the lamp socket.
4. Remove 2 screws-G(M3x8) to remove the speaker handle and 2 screws-H (T3x8) to
remove the speaker.
B
A
G
H
C
D
Lamp
socket
Thermal fuse
(SW902)
F
E
B
B
ID CONNECT
board
FN908 & fan duct
assy
H
Speaker
A
G
B
B
Speaker handle
Spacer boss
Lamp holder
Stopper
SW901
Note:
When removing screws-C which is to
fix the ID CONNECT board, the special
screwdriver is needed as the below;
Star screwdriver size:T10
MTG duct
lamp top
Guide air flap
MTG duct
lamp bottom
-24-
Mechanical Disassembly
1. Remove the thermal fuse spacer from the thermal fuse mounting.
2. Remove the thermal fuse(SW902).
3. Mount the thermal fuses as shown in the figure below.
Fig.5-1
5-1. Thermal fuse replacing
Top view of the fuse mounting
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