Replacing The Lcd/Prism Assembly; Cleaning Up Dust From Panels And Optical Filters; Disassemble And Setting Up - Hitachi CPX1 Service Manual

6-2 Replacing The LCD/PRISM assembly

You should not replace separately the parts of the LCD/PRISM assembly. In case of a failure in any parts of
LCD/PRISM assembly, replace the whole LCD/PRISM assembly.

6-3 Cleaning up dust from panels and optical filters

Wear sunglasses to protect your eyes when you maintain the projector with its lamp on.
1. Preparation
Please prepare cleaning tools and materials as follows. And prepare relatively clean room not to work in
additional dust, while removing operation.
(1) Swab for cleaning : P#: NX08061, "Cotton stick L147"
(2) Air duster (Dust blower, spray can)
(3) Vacuum cleaner

2. Disassemble and setting up.

(1) Turn off the projector, and unplug the power cord.
(2) Remove the lamp cover and upper case, according to the disassembling diagram of chapter 8.
(3) Unscrew the shield sheet and disconnect the LCD panel flexible cables.
(4) Unscrew PWB assembly MAIN to make it free.
Remove these screw
(5) Press and hold the switch S801 using an insulator during maintenance.
(6) Keep the unscrewed wires away from all of electric parts.
CPX1(M1-20)
WARNING
Flexible cables of LCD panel
Do not disassemble the unit
because replacement of separate
parts is not possible.
LCD/PRISM ASSY
16
Remove these screws
PWB assembly MAIN