Clean
the projector's lens and the interactive module's receiver window
periodically, or whenever you notice dust or smudges on either
surface.
To remove dust or smudges, gently wipe the lens or receiver
window with lens-cleaning paper.
To remove stubborn smudges, moisten a soft, lint-free cloth
with lens cleaner and gently wipe the lens or receiver window. Do
not spray any liquid directly on the lens or receiver
window.
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 to clean the lens or
receiver window, or you may damage them. Do not use canned air, or
the gases may leave a residue. Avoid touching the lens or receiver
window with your bare hands to prevent fingerprints on or damage to
either surface.