Maintenance, 1) cleaning the lens and focus sensor, Cleaning the lens – NEC NP40 User Manual
Page 55: Cleaning the focus sensor, 2) cleaning the cabinet, Cleaning the lens and focus sensor, Cleaning the cabinet, Source
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6. 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.
➊ 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 fi nger prints off the focus sensor. Leaving fi nger prints in the focus sensor might cause poor focus or short
auto focus range.
➋ Cleaning the Cabinet
1. Turn off the projector before cleaning.
2. Vacuum the ventilation inlet of the cabinet.
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VIDEO IN
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