The removable air filter prevents dust from accumulating on the surface of the projection lens and projection mirror. Should the air filter become clogged, it will reduce the cooling fan's effectiveness and may result in internal heat build up and reduce the life of the projector.
Do not clean with water. Doing so may damage the air filter.
Do not operate the projector with the air filter removed.
USAGE IN A CLEAN ENVIRONMENT IS RECOMMENDED. FOR BEST PICTURE IMAGE, USE THE PROJECTOR IN A CLEAN ENVIRONMENT.
When used under dusty or smoky conditions, dust may accumulate on the liquid crystal panel and lens inside, and may thus be projected on the screen together with the picture. When the above symptoms are noticed contact your authorized dealer or service station for the cleaning.