Nortel Networks 822p - Manual (Page 69)

69
5
Maintenance and
Transportation
Y
our projector needs little maintenance. All you need to do on a
regular basis is keep the lens clean. Any dirt or smears on the lens may
show up on your projected image.
You may need to clean the air filter and air vents. A clogged air filter
or air vent can block ventilation needed to cool the projector and
cause overheating.
The only parts you should replace are the lamp and air filter. If any
other part needs replacing, contact your dealer or a qualified servicer.
This chapter covers the following:
■ Cleaning the lens
■ Cleaning the projector case
■ Cleaning and replacing the air filter
■ Replacing the lamp
■ Resetting the lamp timer
■ Transporting the projector
warning
Before you clean any part of
the projector, turn it off and
unplug the power cord.
Never open any cover on the
projector, except the lamp
and filter covers. Dangerous
electrical voltages in the
projector can injure you
severely. Do not try to service
this product yourself, except
as specifically explained in
this User’s Guide. Refer all
other servicing to qualified
service personnel.