Maintenance; Cleaning Instructions; Cleaning The Air Filter; Cleaning The Lens - ViewSonic PJL855 User Manual

Maintenance

Cleaning Instructions

To ensure that the projector functions properly, follow the recommended cleaning instructions below.

Cleaning the Air Filter

IMPORTANT: Clean the air filter about every 100 hours.
1 Turn OFF the Main Power switch of the projector and disconnect
the power cord from the wall outlet.
2 Carefully place the projector on its side (with the lens pointing
up) onto a flat surface covered with soft material (like a towel).
Then loosen the thumb screw and remove the air-filter plate.
3 Remove the air filter from the Front Filter Cover (as shown in the
illustration to the right) and use a vacuum cleaner to clean the
filter.
4 Re-install the air filter, then the Front Filter Cover. Tighten the
thumb screw and plug the power cord back into the wall outlet.
NOTE:
If sufficient dust, etc. collects in the air filter, a protection circuit in the projector
will automatically turn off the power. To prevent this from occurring, make sure you clean
the air filter every 100 hours.

Cleaning the Lens

• To clean the lens, use a camera lens cleaning tissue or a
camel hair brush.
• Be careful not to scratch the lens with a sharp or hard object.

Cleaning the Cabinet

• Use a soft, dry, lint-free cloth to wipe dust, etc. from the cabinet.
• If this is insufficient, use a soft, lint-free cloth moistened with a
mild detergent diluted with water. Then wipe the surface with a
soft, dry, lint-free cloth.

Replacing the Lamp Unit

To order a new lamp unit (
1 Make sure the Main Power switch is OFF, then
disconnect the power cord from the wall outlet. If the
projector has recently been turned on, wait at least
45 minutes for the lamp to cool down.
2 Carefully place the projector onto a flat surface
covered with soft material (like a towel). Then loosen
the Lamp Cover screw and remove the Lamp Plate
(as shown to the right).
3 Loosen the four (4) lamp-unit screws, grasp the
Lamp Unit Handle, and gently pull the lamp unit out
of the projector.
4 Carefully insert the new lamp unit into the projector
and tighten the lamp-unit screws.
5 Re-install the Lamp Cover and tighten the Lamp
Cover screw securely. Power-on the projector.
6 Reset the lamp time (within 10 minutes)
• Press RESET (on projector) or TIMER (on Remote
Control Unit) and hold for three (3) seconds
• Press RESET (on projector) or MENU ON (on
Remote Control Unit)
• Select "0" on the screen using MENU [<] (on
projector) or DISKPAD (on Remote Conrol Unit.)
16
Maintenance
contact ViewSonic
Part No. RLU-150-03A)
Air filter
CAUTION: Never use any ammonia
or alcohol based cleaner on the lens.
CAUTION: Never use any
ammonia or alcohol-based
cleaner to clean the cabinet.
®
Customer Support.
Screws
Lamp
Cover
Replace the lamp unit if:
• the picture is dark
• "CHANGE THE LAMP" is
displayed
• the lamp indicator on the projector
remains lit red. (See page 14.)
CAUTION:
HANDLE THE LAMP UNIT
CAREFULLY. Dropping the unit
could cause the lamp to
explode.
Front Filter
Cover
Lamp Unit
Handlle
Reflector
Front
Glass
Lamp Unit
ViewSonic PJL855