VIEWSONIC PJ750 - Manual (Page 21)

ViewSonic PJ750 19
Air Filters
Cleaning Air Filters
The air filter should be cleaned as described below at an interval of approximately 300 hours.
1 Switch the projector power supply OFF, and remove the power cord from the power outlet.
2 Clean the air filter with a vacuum cleaner.
Replacing the Air Filter
Replace the air filter if contamination cannot be removed, or if it is damaged.Contact your dealer in
such case.
1 Switch the projector power supply OFF, and remove the power cord from the power outlet.
2 Remove the filter cover and the old filter.
3 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.
Other Maintenance
Maintenance Inside the Equipment
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.
Cleaning the Lens
Gently wipe the lens with lens cleaning paper. Do not touch the lens with your hands.
Cleaning the Cabinet and Remote control transmitter
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.