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Cleaning the dust filter
1 Turn off the projector and unplug the power cable.
2 Wait 60 minutes to allow the projector to cool thoroughly.
WARNING: To avoid burns, allow the projector to cool for at least 60
minutes before you clean or replace the dust filter.
3 Remove the dust filter grill door on the side of the projector by pulling
down on the two tabs at the grill’s top.
4 Press the tab on the center of the dust filter and lift it off.
5 Clean the filter using a vacuum set on low power.
6 Replace the dust filter and the dust filter grill door.
7 Reset the filter hour timer.
Troubleshooting
If the Temp and Lamp LEDs indicate a problem with the filter, check the fol-
lowing:
• Use a soft cloth to wipe the mirrors on the dust filter grill.
• Remove the dust filter and use a soft cloth to wipe the window behind
the dust filter.
• Replace the dust filter and the dust filter grill.
Using the security lock
The projector has a security lock for use with a cable lock system. See the
Accessories catalog that came with the projector, or visit our website, for
ordering information. Refer to the information that came with the lock for
instructions on how to use it.
turn off and unplug
the projector
wait 60 minutes
remove dust filter grill
remove dust filter
security lock
LP840-850-860 User's Guide-02.fm Page 42 Friday, February 25, 2005 12:58 PM