Cleaning The Internal Parts Of The Optical Block - Panasonic PT-VZ570 Service Manual

SECTION 2 DISASSEMBLY PROCEDURES

4.2. Cleaning the internal parts of the optical block

The optical block cannot be disassembled.
The optical block is composed of very sensitive parts. There are some parts to bring on the performance down by touching or
wiping the surface of parts. Carry out the cleaning according to the cleaning guide table below.
The optical block has been adjusted preciously at the factory. Do not apply strong force to the LCD panel or frame on the
block.
Type
Parts name
LCD panel
Polarizer OUT(R)
Polarizer OUT(G)
Polarizer OUT(B)
Optical filter (R)
Optical filter (G)
Optical filter (B)
* When taking the wipe cleaning or alcohol cleaning, please pay special attention not to
touch the surface of inorganic polarizers.
B-LCD Panel
Air blower
cleaning
Type
4
--
4
Inorganic
4
Inorganic
4
Inorganic
4
--
Optical filter (B)
Polarizer OUT(B)
(Inorganic)
Top view of the optical block
Wipe cleaning
in-coming side out-going side
4
NG
NG
NG
4
G-LCD Panel
DIS-22
Alcohol cleaning
4 * 4 *
4
NG
4
NG
4
NG
4 *
-
4 Cleaning OK
Optical filter (R)
Polarizer OUT(R)
(Inorganic)
R-LCD Panel
Optical filter (G)
Polarizer OUT(G)
(Inorganic)