77. MaintenanceThis section describes the simple maintenance procedures you should follow to clean the focus sensor, lens andreplace the lamp and the cooling pump.➊ Cleaning the Lens and Focus SensorCleanng the lensUse a blower or lens paper to clean the lens, and be careful not to scratch or mar the lens.Cleanng the focus sensorUse a blower or lens paper to clean the focus sensor.Keep finger prints off the focus sensor. Leaving finger prints in the focus sensor might cause poor focus or shortauto focus range.➋ Cleaning the Cabinet1. turn off the projector before cleaning.2. Vacuum the ventilation inlet of the cabinet.LAMPSTATUSPOWERON/STAND BYSOURCEAUTOADJ.SELECTFOCUSLAMPSTATUSPOWERON/STAND BYSOURCEAUTOADJ.SELECTFOCUSLAMPSTATUSPOWERSOURCEAUTOADJ.SELECTON/STAND BYFOCUSVIDEO INCOMPUTER INPC CONTROLAUDIO INS-VIDEO INCAUTION:When cleaning the speaker us-ing a vacuum cleaner, do notforce the brush of the vacuumcleaner into the slits of the cabi-net.Applying strong pressure or pos-sibly impacting the speaker maycause a malfunction.
