43English EnglishReplacing and cleaning the dust filter1 Turn the projector off then unplug the power cord.2 Pull the dust filter out (Illustration #1).3 Clean or replace the dust filter.4 To put the dust filter back, reverse the previous steps.Cleaning the dust filterClean the dust filter after every 1000 hours of use. If it is not cleaned periodically, itcan become clogged with dust, preventing proper ventilation. This can causeoverheating and damage the projector. (Normally 1000 hours is recommended,however the period will vary depending on actual environment.)Please follow these steps for cleaning procdure:1 To clean the dust filter, use a small vacuum cleaner designed for computersand other office equipment. It also can be cleaned using water. (Illustration #2)2 If the dirt is difficult to remove or the filter is broken, please contact your localdealer or service center to obtain a new filter.(Illustration #1)2Dust Filter(Illustration #2)