Vivitek DH75 Series, Руководство пользователя

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Cleaning the filter (filter: optional parts)
The air filter prevents dust from accumulating on the surface of the optical elements inside the
projector. If the filter is dirty or clogged, your projector may overheat or degrading the projected
image quality.
1.
Turn off the projector, and
unplug the AC power cord
from the AC outlet.
2.
Cleaning the filter with a
vacuum cleaner.
Caution:
Recommend avoiding dusty or smoky environments when you operate the projector, it may
cause poor image quality.
If the filter is heavily clogged and unable to clean, replace a new filter.
Note:
Using a ladder is recommended to access the filter. Do not remove the projector from the
wall mount.