Toshiba TLP-711U Instrukcja serwisowa - Strona 4

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CAUTIONS BEFORE STARTING SERVICING

Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to take a proper

grounding treatment as required.

Many screws are used inside the unit. To prevent missing, dropping, etc. of the screws, always use a magnetized

screwdriver in servicing. Several kinds of screws are used and some of them need special cautions. That is, take care

of the tapping screws securing molded parts and fine pitch screws used to secure metal parts. If they are used

improperly, the screw holes will be easily damaged and the parts can not be fixed.

3. DISASSEMBLING

3-1. Main Unit – Optical Box

3-1-1. Lens

1. Remove optical box.

2. Remove 4 screws (1) and remove lens.

Fig. 1-3-1

3-1-2. LCD Block, LCD Plate and LCD Panel

Note:

• Do not touch the LCD panels with your bare fingers.

Wear white cotton gloves when working with the

panels.

1. Remove all cables connected to connectors on PC

board and LCD panel and drive PC board.

2. Remove FPC section of LCD panel from drive PC

board.

3. Remove 3 screws (1) (always use a screw driver with a

strong magnet) and remove LCD plate with LCD to be

replaced from LCD block. When replacing three

LCDs at the same time, first remove green LCD plate

from the LCD block.

4. Remove 3 screws (2) and remove LCD panel from

LCD plate.

< How to mount a new LCD >

1. When mounting a red LCD, mount it on the red LCD

plate (No. 23430555) or when mounting a blue LCD,

mount it on the blue LCD plate (No.23430554) so

that the FPC section faces upward and main unit side

faces downward.

2. When mounting a green LCD, mount it on the LCD

plate used so far. Then place the green LCD on it in

the same direction as the red and blue LCDs by

tightening screws (3 holes on the LCD plate).

3. Mount the LCD plate with a new LCD mounted at the

bottom side of the LCD block (can be mounted only

in one direction) and tighten the screws. Do not

tighten the screws completely. Tighten the screws

temporarily so that the LCD can move for later pixel

matching adjustment of the LCDs.

1-2

Fig. 1-3-2