NEC U321H - Lamp and Filter Maintenance

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... English
Appendices
Installing and Cleaning the Air Filter
We recommend you clean the air lter every 500 hours of
operation, or more often if you are using the projector in a
dusty environment.
When the warning message appears on the screen, do the
following to clean the air lter:
WARNING! FILTER
PLEASE CLEAN THE FILTER.
Filter Replacing Procedure:
1. Switch off the power to the projector by pressing the POWER OFF button on the
remote control or the button on the control panel.
2. Disconnect the power cord.
3. Pull out the lters, as shown in the illustration. 
 4. Carefully remove the lters. Then clean or replace the lters. 
To install the lters, reverse the previous steps.
5. Turn on the projector and reset the lter usage counter after the lters are
replaced.
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A proper
maintenance
will prevent
overheating
and projector
malfunction.
The specic
interfaces are
selected in terms of
the specications of
types.
Make sure to
power off the
projector before
cleaning the lters.
After cleaning the
lters, securely
install the lters.
When the lters are
removed, do not
put your ngers
into the openings
on the projector.