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Removing and replacing the optical engine
The optical engine (LP920, IOpen 920: 530-0108-xx; LP925: 530-0115-xx; LP930: 530-0114-xx) is
located adjacent to the power supply at the side of the projector opposite the I/O ports. It fastens to the
bottom case and produces the projected image by directing focused light from the lamp module through
three polysilicon LCDs. The optical engine and its two LCD driver ECAs are located beneath the ECA
stack.
NOTE
A new optical engine includes both the upper and lower cooling fans. The fans are not available
separately.
1
Remove the following items:
Front bezel (see page 24)
Rear bezel (see page 43)
Top case (see page 47)
Exhaust fan assembly (see page 18)
Lamp module (see page 29)
ECA stack (see page 13)
2
Use a T-10 Torx driver to remove the two M3x8 screws that fasten the lamp connector shield to
the top of the power supply. Then remove the shield.
LP900 Series Service Manual
34
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