27ViewSonic PJ678
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.
Be sure that the projector is stable after turning
it over.
3. Remove the air fi lter by pushing the fi lter tab.
4. Clean the air fi lter.
To clean the fi lter, you are advised to use a
small vacuum cleaner designed for computers
and other offi ce equipment.
If the dirt is diffi cult to remove or if the fi lter
is torn, replace it.
5. Replace the fi lter.
6. Plug the power back into the projector.
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