Maintenance; Clean The Lens - Brother AIRScouter WD-360B User Manual

5. Maintenance

Clean the Lens

If the lens becomes smudged or dirty, you may not be able
to clearly see the image on the head display. If this occurs,
clean the lens as described below.
Important
Use a soft cloth to wipe away dirt and dust from the lens.
Use a soft cloth for cleaning the lens. Never
use ethanol, organic solvents, or organic
chemicals. Such substances could cause the
anti-reflection film coating to peel off the lens
so that the image will not be seen correctly.
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