Quick Maintenance - Sanyo PLC-WM4500L Service Manual

Maintenance

Quick maintenance

This projector provides a cabinet prism cover on the cabinet top to enhance the service maintenance. This enables
service personnel to align the optical adjustment or replace the optical parts without disassembly the cabinet top.
1
Loosen a screw-A on the lamp cover and slide it to
open (Fig. 1).
2
Loosen a screw-B on the prism cover and slide it in the
arrow direction (Fig. 2).
3
Loosen 3 screws-D and take the LCD Panel/Prism
ass'y upward off (Fig. 3/Fig. 5).
4
Remove 2 screws-E on each stopper of the polarized
glass ass'y and take the polarized glass ass'y upward off
(Fig. 4/Fig. 5).
5
See chapter "Optical Parts Disassembly" for further
information of the optical parts disassembly.
Setting the Lamp Cover switch to "Service"
When aligning the optical parts with the lamp cover open,
the projector cannot be turned on because the lamp cover
switch is off. Insert the flat screw driver into the opening on
the switch and set the lamp cover switch to "service" position
as shown in the figure below.
After finishing the alignment, make sure that the lamp cover
switch is reset to its original position, and close the prism
cover and lamp cover securely.
Lamp cover switch
"Service" position
-13-
Lamp cover
A
Prism cover
Panel/Prism assy
Polarized glass assy
D
E
E
D
E
Fig. 1
B
Fig. 2
Fig. 3
Fig. 4
E
E
D
Fig. 5
E