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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
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