NEC NP43 - Maintenance; Cleaning the Lens and Focus Sensor

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7. Maintenance
Thissectiondescribesthesimplemaintenanceproceduresyoushouldfollowtocleanthefocussensor,lensand
replacethelampandthecoolingpump.
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Cleaning the Lens and Focus Sensor
Cleaning the lens
Useablowerorlenspapertocleanthelens,andbecarefulnottoscratchormarthelens.
Cleaning the focus sensor
Useablowerorlenspapertocleanthefocussensor.
Keepngerprintsoffthefocussensor.Leavingngerprintsinthefocussensormightcausepoorfocusorshort
autofocusrange.
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Cleaning the Cabinet
1. Turn off the projector before cleaning.
2. Vacuum the ventilation inlet of the cabinet.
CAUTION:
When cleaning the speaker us-
ing a vacuum cleaner, do not
force the brush of the vacuum
cleanerintotheslitsofthecabi-
net.
Applyingstrongpressureorpos-
siblyimpactingthespeakermay
causeamalfunction.