Maintaining The Air Filter; Replacing The Lamp; Replacing The Air Filter - ViewSonic Precision User Manual

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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.
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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.
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Replacing the Lamp

Projector lamps have a finite life. Replace the lamp when:
• A warning message "Lamp is approaching the end of its useful life in full power operation.
Replacement suggested!" appears on the screen.
• The image becomes darker and hues become weaker after a lamp has been for a long period
of time.
• The projector lamp LED indicator turns into amber. Refer to section titled "LED Indicator Mes-
sages" for further details.
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NOTE
• The lamp will remain in high temperature even after the projector's power is turned off. Wait
for at least 45 minutes after power off to cool down the lamp. Touching the lamp prior proper
cool down time can cause skin scalding.
• Do not touch any glass portion of the lamp at any time. The lamp may explode due to
improper handling or grease generated from finger.
• Lamp lifetime may differ from lamp to lamp and according to the environment of use. There
is no guarantee of the same lifetime for each lamp. Some lamps may fail or terminate their
lifetime in a shorter period of time than other similar lamps.
• A lamp may explode as a result of vibration, shock or degradation as a result of hours of use
as its lifetime draws to an end. Risk of explosion may differ according to the environment or
conditions in which the projector and lamp are being used.
• Wear protective gloves and eyeglasses when fixing or detaching the lamp.
• Short on-off-cycles will damage the lamp and reduce lamp life. Wait at least for 7 minutes to
turn off the projector after powering on.
• Do not operate the lamp in proximity to paper, cloth, or other combustible material nor cover it
with such materials. Otherwise it could cause a fire.
• Do not operate the lamp in an atmosphere containing an inflammable substance, such as
thinner. Otherwise it could cause a fire or explosion.
• Thoroughly ventilate the area or the room when operating the lamp in an oxygen atmosphere (in
the air). If ozone is inhaled, it could cause headaches, nausea, dizziness, etc.

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