Garmin 821P User Manual

Clean the lens whenever you notice dirt or dust on the surface. 

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Use a canister of compressed air to remove dust. 

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To remove dirt or smears on the lens, use lens-cleaning paper. If 
necessary, moisten a soft cloth with lens cleaner and gently wipe 
the lens surface.

Before you clean the case, first turn off the projector and unplug the 
power cord. 

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To remove dirt or dust, wipe the case with a soft, dry, lint-free 
cloth. 

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To remove stubborn dirt or stains, moisten a soft cloth with water 
and a mild detergent. Then wipe the case. 

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Do not use wax, alcohol, benzene, paint thinner, or other 
chemical detergents. These can damage the case.