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Cleaning and replacing the air fi lter
Check and clean the air fi lter periodically. When the indicators or a message
prompts you to clean the air fi lter, replace the fi lter as soon as possible.
The fi lter unit with two sheets of fi lters is inside of the fi lter cover. In addition, the
extra air fi lter is attached to inner side of the fi lter cover. If one of the fi lters is
damaged or heavily soiled, replace whole fi lter set with a new one.
Request a fi lter set with the following type number from your dealer when
purchasing a new one.
Type number : 003-005339-01 (UX40821)
1.
Turn the projector off, and unplug the power
cord. Allow the projector to suffi ciently cool
down.
2.
Use a vacuum cleaner on and around the
fi lter cover.
3.
Pick and pull up the fi lter cover knobs to
take it off.
4.
Press up slightly the bottom side knobs
to unlock the bottom side of the fi lter unit.
Pull the center knob to take the fi lter unit
off.
5.
Use a vacuum cleaner for the fi lter vent
of the projector and the outer side of the
fi lter unit.
6.
The fi 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 fi lter unit to clean them
up. If the fi lters are damaged or heavily
soiled, replace them with the new ones.
8.
Combine the two parts to reassemble the
fi lter unit.
9.
Put the fi lter unit back into the projector.
(continued on next page)
LWU720i/LHD720i/LWU620i
Setup Guide
2
3
Filter cover
knobs
4, 5
6
7
19
Filter cover
Extra
air fi lter
Filter unit
Filter unit
knobs
Interlocking
Parts
020-001337-01 Rev. 1 (10-2017)
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