110
Maintenance
Please check and clean the air  lter periodically. When the indicators or a message 
prompts you to clean the air  lter, comply with it as soon as possible.
The  lter unit with 2 sheets of  lters is inside of the  lter cover. In addition, the extra 
air  lter is attached to inner side of the  lter cover. If one of the  lters is damaged or 
heavily soiled, replace whole  lter set with a new one.
Request for a  lter set with the following type number from your dealer when 
purchasing a new one.
Type number : UX40821
1.
 
Turn the projector off, and unplug the power 
cord. Allow the projector to suf ciently cool 
down.
2.
 
Use a vacuum cleaner on and around the 
 lter cover.
3.
 
Pick and pull up the  lter cover knobs to 
take it off.
4.
 
 
Press up slightly the bottom side knobs 
to unlock the bottom side of the  lter unit. 
Pull the center knob to take the  lter unit 
off.
5.
 
Use a vacuum cleaner for the  lter vent 
of the projector and the outer side of the 
 lter unit.
6.
 
 
The  lter unit consists of two parts. Press 
down around the interlocking parts to 
unlock, then separate the two parts.
7.
 
Use a vacuum cleaner for the inner side 
of each part of the  lter unit to clean them 
up. If the  lters are damaged or heavily 
soiled, replace them with the new ones.
8.
 
Combine the two parts to reassemble the 
 lter unit.
9.
 
Put the  lter unit back into the projector.
(continued on next page) 
Filter cover
Filter cover 
knobs
2
3
Filter unit
Filter unit 
knobs
4, 5
6
7
Extra 
air  lter
Cleaning and replacing the air  lter
Interlocking
Parts