Clean
the projection window periodically, or whenever you notice dust or
smudges on the surface.
To remove dust or smudges, gently wipe the
projection window with lens-cleaning paper.
To remove stubborn smudges, moisten a soft,
lint-free cloth with lens cleaner and gently wipe the projection
window.
Warning: Do
not use a lens cleaner that contains flammable gas. The high heat
generated by the projector may cause a fire.
Caution:
Do not use canned air, or the gases may
leave a flammable residue. Do not use glass cleaner or any harsh
materials to clean the projection window and do not subject the
projection window to any impacts or you may damage it.