NEC NP4001/NP4000 - Manual (Page 114)

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6. Maintenance
n Cleaning the projector
Cleaning the Cabinet
Refer to the following guide to clean the projector cabinet.
1. Wipe off dust with a clean dampened cloth.
2. Moisten the cloth with warm water and mild detergent and wipe the cabinet.
3. Rinse all detergent from the cloth and wipe the projector again.
CAUTION
To prevent discoloration or fading of the case, do not use abrasive alco-
hol-based cleaners.
Cleaning the Lens
Refer to the following guide to clean the projector lens.
1. Apply a little optic lens cleaner to a clean, lint free cloth (do not apply the cleaner
directly to the lens).
2. Lightly wipe the lens in a circular motion.
CAUTION Do not use abrasive cleaners or solvents.
To prevent discoloration or fading, avoid getting cleaner on the projector
case.