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To clean a filter that is?>



I just got a new Sony VPL100 "Ruby" and manual says clean every 1250 hrs, even pulls up a reminder on screen according to manual. I have owned a Panasonic PTAX100 and a Mitsubishi 6500, both had a cleaning suggestion of I think 100 hrs so theis strikes me as odd. I do have it mounted on ceiling with dust guard installed, I will surely check it now and then but curious what others have experienced with this? Thanks
 

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Partly because the others you had are LCD and not sealed. They use the "clean often" approach to try and minimize the change of dust blobs, which they are prone to getting.
 
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