VIEWSONIC Precision VS11856 - Manual (Page 50)


Appendix
Maintenance
The projector needs proper maintenance. You should keep the lens clean as dust, dirt or spots will
project on the screen and diminish image quality. If any other parts need replacing, contact your
dealer or qualified service personnel. When cleaning any part of the projector, always switch off
and unplug the projector first.
Warning:
Never open any of the covers on the projector. Dangerous electrical voltages inside the projector
can cause severe injury. Do not attempt to service this product yourself. Refer all servicing to
qualified service personnel.
Cleaning the Lens
Gently wipe the lens with Micro-fiber wiping cloth. Do not touch the lens with your hands.
Cleaning the Projector Housing
Gently wipe with a soft cloth. If dirt and stains are not easily removed, use a soft cloth damped
with water, or water and neutral detergent, and wipe dry with a soft, dry cloth.
Maintaining the Air Filter
The air filter, which is located at the back of the projector, should be replaced or cleaned when
warned by system either because 200 hours of use or rise of internal temperature. If it is not
cleaned periodically, it can become clogged with dust and prevent the projector from being
ventilated properly. This can cause over heating and damage the projector.
To clean the air filter:
1. Pull down the filter module cover.
2. Remove the filter module cover.
3. Remove the dirty filter directly.
4. Attach the clean air-filter.
5. Attach the filter cover to the projector.
Replacing the Air Filter
The air filter should be replaced when cleaning is ineffective contact an authorized service center
for the optional air filter.
«
NOTE
»
• Turn off the projector and remove the AC power cord from the power outlet before beginning
maintenance work.
• Make sure the lens is cool before cleaning.
• Do not use detergents or chemicals other than those noted above. Do not use benzene or
thinners.
• Do not use chemical sprays.
• Use a soft cloth or lens paper only.