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Acer U5220 Series User Manual page 5

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Product servicing
Do not attempt to service this product yourself, as opening or removing covers
may expose you to dangerous voltage points or other risks. Refer all servicing to
qualified service personnel.
Unplug this product from the wall outlet and refer servicing to qualified service
personnel when:
the power cord or plug is damaged, cut or frayed
liquid was spilled into the product
the product was exposed to rain or water
the product has been dropped or the case has been damaged
the product exhibits a distinct change in performance, indicating a need
for service
the product does not operate normally after following the operating
Note: Adjust only those controls that are covered by the operating
instructions, since improper adjustment of other controls may result in
damage and will often require extensive work by a qualified technician to
restore the product to normal condition.
Warning! For safety reasons, do not use non-compliant parts when adding
or changing components. Consult your reseller for purchase options.
Your device and its enhancements may contain small parts. Keep them out of
the reach of small children.
Additional safety information
Do not look into the projector's lens when the lamp is on. The bright light
may hurt your eyes.
Turn on the projector first and then signal sources.
Do not place the product in the following environments:
Space that is poorly ventilated or confined. At least 50cm clearance from walls
and free flow of air around the projector are necessary.
Locations where temperatures may become excessively high, such as inside of a
car with all windows rolled up.
Locations where excessive humidity, dust, or cigarette smoke may contaminate
optical components, shorten the life span and darken the image.
Locations near fire alarms.
Locations with an ambient temperature above 40 ºC/104 ºF.
Locations where the altitudes are higher than 10000 feet.
Unplug immediately if there is something wrong with your projector. Do
not operate if smoke, strange noise or odor comes out of your projector. It



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