Clean
the projector's lens periodically, or whenever you notice dust or
smudges on the surface. Make sure you unplug the
projector before cleaning the lens.
To remove dust or smudges,
gently wipe the lens with a cloth meant for cleaning glasses and
lenses.
To remove stubborn smudges, moisten a soft,
lint-free cloth with lens cleaner and gently wipe the lens. Do not
spray any liquid directly on the lens.
Warning:Do not use a lens cleaner that contains flammable
gas. The high heat generated by the projector lamp may cause a
fire.
Caution:
Do not use glass cleaner or any harsh
materials to clean the lens and do not subject the lens to any
impacts; you may damage it. Do not use canned air, or the gases may
leave a residue. Avoid touching the lens with your bare hands to
prevent fingerprints on or damage to the lens surface.