Maintenance; Prior To Projector Maintenance; Care Of The Projector; Clean The Lens - BenQ LH770 User Manual

Maintenance

Prior to projector maintenance

y Be sure to turn off the projector before maintenance.
y Be sure to follow the steps in
projector.

Care of the projector

Your projector needs little maintenance. The only thing you need to do on a regular basis is to keep the
lens clean.
Never remove any parts of the projector. Contact your dealer if other parts need replacing.

Clean the lens

Clean the lens whenever you notice dirt or dust on the surface.
y Use a canister of compressed air to remove dust.
y If there is dirt or smears, use lens-cleaning paper or moisten a soft cloth with lens cleaner and gently
wipe the lens surface.
Caution:
Never use any type of abrasive pad, alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, benzene, thinner
or insecticide. Using such materials or maintaining prolonged contact with rubber or vinyl materials may result in damage to the
projector surface and cabinet material.

Cleaning the projector case

Before you clean the case, turn the projector off using the proper shutdown procedure as described in
"Shutting down the projector" on page 48
y To remove dirt or dust, wipe the case with a soft, lint-free cloth.
y To remove stubborn dirt or stains, moisten a soft cloth with water and a neutral pH detergent. Then
wipe the case.
Caution:
Never use wax, alcohol, benzene, thinner or other chemical detergents. These can damage the case.
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"Shutting down the projector" on page 48
and unplug the power cord.
when shutting down the