Cleaning The Filter; Replacing The Filter - BenQ PX9210 User Manual

Resetting the lamp timer
10. After the startup logo, open the On-Screen Display (OSD) menu. Go to the
SYSTEM SETUP: Advanced > Lamp Settings menu. Press ENTER. The
Lamp Settings page displays. Highlight Reset lamp timer. A warning message
displays asking if you want to reset the lamp timer. Highlight Yes and press ENTER.
The lamp time will be reset to '0'.
Do not reset if the lamp is not new or replaced as this could cause damage.

Cleaning the filter

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.
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.
Using a ladder is recommended to access the filter. Do not
remove the projector from the wall mount.

Replacing the filter

1. Turn off the projector, and unplug the
AC power cord from the AC outlet.
Clean up the dust on the projector and
around the air vents.
Pull out the filter cover and remove
from the projector.
2. Lift the filter from the filter cover.
66 Maintenance