486. MaintenanceMENUSELECTLAMPSTATUSPOWERON/STAND BYSOURCEAUTO ADJ.ENTEREXITFOCUSZOOMFilterThis section describes the simple maintenance procedures you should follow to clean the filters and replace the lamp. Cleaning or Replacing the FiltersThe air-filter sponge keeps dust and dirt from getting inside the projector and should be frequently cleaned. If the filteris dirty or clogged, your projector may overheat.NOTE: The message for filter cleaning will be displayed for one minute after the projector is turned on or off.To cancel the message, press any button on the projector cabinet or the remote control.CAUTION• Turn off the projector, turn off the main power switch and unplug the projector before replacing the filters.• Only clean the outside of the filter cover with a vacuum cleaner.• Do not attempt to operate the projector without the filter cover.To clean the air-filter:Vacuum the filter-through the filter cover.To replace the filter (sponge):1. Remove the filter cover by pushing down on the catch of the cover until you feel it detach.Catch2. Gently peel off the filter (sponge) and replace it with the new one.