The projectors are precise devices, which require cleaning and maintenance. This post will tell you how to clean the NEC NP64 projector.
How to clean the lens
Use a blower or lens paper to clean the lens, and be careful not to scratch or mar the lens.
How to clean focus sensor
Use a blower or lens paper to clean the focus sensor. Keep fingerprints off the focus sensor. Leaving fingerprints in the focus sensor might cause poor focus or a short auto focus range.
How to clean the Cabinet
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