Panasonic PT-47WX42CF, Service Manual

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Service Manual
Disassembly for service (continued)
Screen frame removal
1. Remove the speaker grille. Disconnect the cables
leading to the keyboard and the AV panels and
remove the keyboard and AV panel assembly. The
assembly is secured by three (3) screws.
2. At this point the front cover is held only by four
screws, be careful not to push the cabinet forward.
3. Remove screws and tilt the assembly forward while
lifting it out of place.
Screen assembly
(figure 14)
1. Remove the screen frame. See screen frame
removal procedure above.
2. Place screen frame face down on a soft surface.
3. Remove all screen brackets and corner brackets
Note: The brackets are painted black (permanent
marker) on the edge to prevent reflection on
image.
Figure 14. Screen assembly
4. Note exact orientation and order of each screen.
The orientation and order of the screens is critical
for displaying pictures properly. Detailed screen
assembly can be seen in figure 14.
Main chassis block
(figure 15)
1. Remove the speaker grille. See figure 11.
2. Remove the cabinet back lower cover. See
figure 12.
3. The main chassis block is secured to the cabinet
by screws at front, behind the Speaker Grill and
inside on the bottom of the optical frame).
4. Remove the horizontal barrier panel at the back of
the cabinet.
5. Unplug connectors (K1, G1 and speaker
connectors) and pull out the main chassis block.
Figure 15. Chassis removal
Chassis assembly
The chassis assembly shown in figure 18 includes all
the electrical and optical (light box) components.
Figure 16. Chassis rear view
Fresnel screen
Lenticular screen
Protective screen
Bracket
Felt
0 ± 0.5mm
Fresnel
screen
Double
adhesive tape
Screws (18 places)
Main Chassis Block
Note: Main chassis block can be serviced either
in normal position or laying on its back
(protect hookup terminal from damage).