R5911443 /08 UDM172
4. If there are still fingerprints on the surface, wipe them off with lens cleaner together with a clean lens
cleaning cloth. Polish again with a dry one.
If smears occur when cleaning lenses, replace the cloth. Smears are the first indication of a dirty
cloth.
13.3 Cleaning the exterior of the projector
How to clean the exterior of the projector ?
1. Switch off the projector and unplug the projector from the mains power net.
2. Clean the housing of the projector with a damp cloth. Stubborn stains may be removed with a cloth lightly
dampened with a mild detergent solution.
13.4 Cleaning / replace the air filters
About the air filters
There are three air filters in the projector; at the front, at the top and on the right side of the projector. It is no
regular interval for cleaning or replace the filters, but they must be inspected regularly to avoid clogging, and
by that also a possibility of increased temperature internally in the projector.
Cleaning of the filters
The top-, and side filter can be rinsed with lukewarm water and dried.
The filter in the front can be vacuum cleaned.
About the cover locks
All the covers are fastened to the projector by “easylock” tabs. The procedure below shows the technique for
releasing and locking of the tabs.
Required tools
Flat screwdriver 5mm
Unlocking the covers
1. Push down the inner side of the easylock with a screwdriver.
Image 13–2
As a result the lock jumps loose.
Locking the covers
1. Ensure that the cover is in the correct position.
2. Press the easylock into the housing.
Product maintenance
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