Mitsubishi Electronics WD720U Projection Television User Manual


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EN-56
Troubleshooting (continued)
Others (continued)
Problem Solution
The fans sound during
standby.
• WhenStandbyModeoftheEfcientModemenuintheInstallationmenuissetto
LAN, Speaker Out, or Monitor Out, the fans rotate at very low speed during standby
after plugging the power cord (with 5 second high speed rotation at the beginning)
and after turning off the lamp. This is to cool down the projector operating various
functions during standby and is not a malfunction.
Abnormal sound is
heard.
• Becausethecolorwheelspinsatahighspeed,metallicsoundsmaybeheardinrare
occasions. Such symptom is not a malfunction.
If the following problem occurs after the lamp is replaced, check the following first.
Problem Solution
The projector does not
turn on.
• Fitthelampcoversecurely.(Seepage51or52.)
• Resetthelampoperatingtime.(Seepage52.)
The STATUS indicator
blinks.
• Resetthelampoperatingtime.(Seepage52.)
Maintenance
Warning:
• Donotuseammablesolvents(benzene,thinner,etc.)andammableaerosolswhencleaningtheprojectorbody
and lens. Flammable substances may ignite causing fire or breakdown while the lamp is illuminating.
Caution:
• Besuretoturnoffthelampandunplugthepowercordfromthewalloutletbeforeyouperformanymaintenance
on the projector.
• Askyourdealerforannualcleaningoftheinsideoftheprojector.Ifyoucontinuetousetheprojectorwithdust
inside, it may result in fire or malfunction.
Cleaning of the projector and the vents
Use a soft cloth to clean the projector and the vents. When the vents become dirty, wipe them with a soft cloth
dampened with diluted mild detergent, and then wipe them with a dry cloth.
To protect the surface of the projector from fading or deteriorating:
• Donotsprayinsecticideonorinsidetheprojector.
• Donotusebenzinorthinnertocleanit.
• Donotletrubberorplasticmaterialscontactwithprojector.
Cleaning of the lens
Use a standard lens-cleaning brush or a piece of lens tissue dampened with lens cleaning fluid. The lens surface is
fragile. Use only recommended, nonabrasive lens-cleaning materials. Do not touch the lens with your fingers.
Kensington Lock
This projector has a Kensington Security Standard connector for use with Kensington MicroSaver Security System.
Refer to the information that came with the Kensington System for instructions on how to use it to secure the
projector. Please contact Kensington Technology Group below.
Kensington Technology Group
2855 Campus Drive
SanMateo,CA94403,U.S.A.
Phone:+1-(650)572-2700 Fax:+1-(650)572-9675
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