Canon DC-4381 - Manual (Page 33)

EN-33
Maintenance
Caution:
Be sure to turn off the lamp and unplug the power cord from the wall outlet before you
perform any maintenance on the projector.
Cleaning of the projector and the ventilation slots
Use a soft cloth to clean the projector and the ventilation grilles. When the grilles
become dirty, wipe them with a soft cloth dampened with diluted mild detergent, and
then wipe them with a dry cloth.
To protect the surface of the projector from fading or deteriorating:
Do not spray insecticide on or inside the projector.
Do not use benzine or thinner to clean it.
Do not let rubber or plastic materials contact with projector.
Cleaning of the lens
Use a standard lens-cleaning brush or a piece of lens tissue dampened with lens cleaning
fluid. The lens surface is fragile. Use only recommended, nonabrasive lens-cleaning
materials. Do not touch the lens with your fingers.