Canon LV-7575 - Manual (Page 47)

47
CLEANING PROJECTION LENS
Apply a non-abrasive camera lens cleaner to a dry soft cleaning cloth. Avoid using an excessive amount of
cleaner. Abrasive cleaners, solvents ,or other harsh chemicals might scratch the surface of the lens.
When the projector is not in use, put the lens cap.
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3 Gently wipe with the cleaning cloth over the projection lens.
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Follow these steps to clean the projection lens:
AIR FILTERS CARE AND CLEANING
AIR FILTERS
Pull up and remove.
Turn off the projector and unplug the AC power cord
from an AC outlet.
Turn over projector and remove the air filters by pulling
the latches upward.
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Air filters help prevent dust from accumulating on the optical elements inside the projector. To whatever extent
the air filters become clogged with dust particles, the cooling fans’ effectiveness is reduced, which may result
in an internal heat build-up and adversely affect the life of the projector. Therefore, for appropriate care and use
of the projector, regular cleaning of the air filters is necessary.
How often the air filters should be cleaned really depends upon the environment in which the projector is being
operated. As a rough guide, under a normally clean operating environment, the air filters should be cleaned
approximately every 200 hours of use. However, if the projector is being operated in a somewhat dusty or
smoky environment, the air filters should be cleaned more often; for consistently good projector operation and
performance, timely cleaning of the air filters is a very important factor. When appropriate, clean the air filters
following the steps below.
Clean the air filters with a brush or rinse them softly.
When rinsing the air filters, dry them well. 3
Replace the air filters properly. Make sure that the air
filters are fully inserted to the projector. 4
CAUTION
Do not operate the projector with the air filters
removed. Dust may accumulate on the LCD Panel and
projection mirror degrading the picture quality. Do not
put anything into the air intake vents. It may result in
malfunction of the projector.
RECOMMENDATION
We recommend avoiding dusty/smoky environments when operating the projector. Usage in these
environments may cause a poor image quality.
When using the projector under dusty or smoky conditions, dust may accumulate on a lens, liquid crystal
panels, or optical elements inside the projector. Such condition may degrade the quality of the projected
image. When the symptoms above are noticed, contact your authorized dealer or service station for proper
cleaning.
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Turn off the projector and unplug the AC power cord from an AC outlet.
APPENDIX
NOTE: If the dust cannot be removed by
cleaning, it is probably time to replace
the air filters with new ones. Please
consult your dealer.
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