Panasonic PTLB80NTU - LCD PROJECTOR, Service Manual, Page: 19 / 118

be used for resetting the incidence polarizer
position.
3. Unscrew the 1 screw and remove the incidence polarizer
(G).
4. Attach a new incidence polarizer (G) and align it with the
mark.
5. Tighten the 1 screw with care not to move the incidence
polarizer position.
7.15. Replacement of Incidence
Polarizer (R and B)
1. Remove the A-P.C.Board block according to the steps 1
through 5 in the section 7.3. "Removal of A-P.C.Board".
2. Unscrew the 2 screws and remove the LCD block.
Note:
· Be careful not to touch the surface of prism and LCD
panel.
3. Unscrew the 3 screws and remove the analysis case
(upper) .
Note:
· The incidence polarizer (G) is installed in the
analysis case (upper). Handle with care not to apply
external force to the incidence polarizer (G).
4. Replace the incidence polarizer.
Note:
· Do not touch the incidence polarizer directly by the
hand.
Must use a fingerstall or clean gloves.
7.16. Replacement of Projection
Polarizer
· The procedure is described as an example of projection
polarizer (B).
1. Remove the LCD block according to the section 7.12.
"Removal of LCD Block".
Note:
· Be careful not to touch the surface of prism and LCD
panel.
2. Remove the projection polarizer which requires replacing.
(The projection polarizer is secured with adhesive tape.)
Notes:
· Be careful not to damage peripheral components
(prism, LCD panel, etc.).
· Use tweezers.
3. Install new projection polarizer.
a. Put adhesive tape on the projection polarizer.
b. Stick the projection polarizer on the specified position.
Notes:
· Align the projection polarizer with the guides
(lower, side) of LCD block.
·
Be careful not to touch the surface of projection
polarizer.
·
Use tweezers.
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