Viewsonic 300 User Manual

The air filter should be cleaned as described below at an interval of approximately 300 hours.

Switch the projector power supply OFF, and remove the power cord from the power outlet.

Clean the air filter with a vacuum cleaner.

Replace the air filter if contamination cannot be removed, or if it is damaged.Contact your dealer in 
such case. 

Switch the projector power supply OFF, and remove the power cord from the power outlet.

Remove the filter cover and the old filter.

Set the new filter and the filter cover.

CAUTION

• Switch power OFF and remove the power cord from the power outlet before beginning 

maintenance work. 

• Replace the air filter if contamination cannot be removed, or if it is damaged.
• Do not use the equipment with the air filter removed.
• When the air filter is clogged with dust etc., the power supply is switched OFF automatically to 

prevent the temperature rising inside the projector.

For safety reasons, ensure that the equipment is cleaned and checked by the dealer once every two 
years. Maintaining the equipment by yourself is dangerous.

Gently wipe the lens with lens cleaning paper. Do not touch the lens with your hands.

Gently wipe with a soft cloth. If dirt and stains etc. are not easily removed, use a soft cloth dampened 
with water, or water and a neutral detergent, and wipe dry with a soft, dry cloth.

CAUTION 

• Switch power OFF and remove the power cord from the power outlet before beginning 

maintenance work. 

• Do not use detergents or chemicals other than those noted above (e.g. benzene or thinners).
• Do not use cleaning sprays.
• Do not rub with hard materials, or tap the equipment.