NEC NP-U300X U300X : user manual - Page 70

Cleaning procedure for the aspherical mirror and lens

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Appendices Cleaning procedure for the aspherical mirror and lens If the aspherical mirror or lens of projection lens is dusty or blemished, please clean the mirror or lens as following procedure: 1. Turn off the projector and cool projector down for a while. 2. Unplug the power cord from outlet. 3. Blow the dust by blower for cameras which you could buy from camera shops.Wipe the mirror or lens gently using the cleaning cloth. CAUTION: • D o not wipe the mirror, if there is dust on it. Please blow the dust by blower first. • A lways wipe the mirror or lens with the cleaning cloth. • P lease do not wipe the mirror or lens hard because that may cause serious damage on the surface of mirror or lens. • W iping might scratch the mirror or lens. Optical performance of the projector will thus be impacted if mirror or lens is scratched after wiping. Optical performance impact will be dependent on the scratch condition of them. • D o not use liquid cleaners or chemicals on the cloth because it may contaminate the cloth and cause serious damage on the surface of mirror or lens. 63 ... English

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63
... English
Appendices
Cleaning procedure for the aspherical
mirror and lens
If the aspherical mirror or lens of projection lens is dusty or
blemished, please clean the mirror or lens as following proce-
dure:
1.
Turn off the projector and cool projector down for a while.
2.
Unplug the power cord from outlet.
3.
Blow the dust by blower for cameras which you could buy from
camera shops.Wipe the mirror or lens gently using the cleaning
cloth.
CAUTION:
• Do not wipe the mirror, if there is dust on it. Please blow the dust by
blower first.
• Always wipe the mirror or lens with the cleaning cloth.
• Please do not wipe the mirror or lens hard because that may cause serious
damage on the surface of mirror or lens.
• Wiping might scratch the mirror or lens. Optical performance of the projec-
tor will thus be impacted if mirror or lens is scratched after wiping. Optical
performance impact will be dependent on the scratch condition of them.
• Do not use liquid cleaners or chemicals on the cloth because it may contam-
inate the cloth and cause serious damage on the surface of mirror or lens.