Mitsubishi Electronics HC7900DW Projector User Manual


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EN-49
Troubleshooting (continued)
Others (continued)
Problem Solution
The menu can’t be
used.
• Themicrocomputersinsidetheprojectormaybewronglyoperatingbecauseofnoise.
Press the POWER button to turn off the lamp and wait about 2 minutes. Then
unplug the power cord from the outlet, wait at least 10 minutes, and plug the
power cord back into the outlet. When the POWER button doesn’t function, unplug
the power cord from the outlet, wait at least 10 minutes, and then plug the power
cord back into the outlet.
• Youcannotselectgrayed-outitems.(Seepage29.)
“TEMPERATURE!!” is
displayed.
• This indication appears when the ambient temperature rises high. When the ambient
temperature stays high, the lamp goes out.
Eliminate any causes of the rise in the ambient temperature.
• This indication appears when the intake or exhaust vents are blocked. When they are
kept blocked, the lamp goes out.
Remove the objects blocking the intake or exhaust vents.
The mark appears.
• This mark appears when ineffective operation is carried out. This isn’t a product
malfunction.
The remote control
doesn’t function easily
or at all.
• Check that the batteries are loaded in the remote control or the batteries are not
weak. (See page 6.)
• Check that the remote control sensor isn’t exposed to direct sunlight or fluorescent
light. (See page 9.)
• Use the remote control within its operation range. (See page 9.)
• Use the remote control at least 10 cm away from the projector.
The remote control of
other device such as
DVD recorder doesn’t
function.
• Whenyouareviewinga3Dimage,stopthesignalbeingoutputfromthe3Demitter
temporarily by pressing the 3D SYNC PAUSE button on the remote control. (See page
26.)
The buttons on the
control panel (except
for the POWER
button) don’t function.
• PASSWORD FUNCTION in the FEATURE menu has been set to MENU ACCESS to
enable the password lock.
Cancel the password lock or contact the person in charge of management of the
projector. (See page 41.)
Mechanical operating
noise (clicking sound)
is heard.
• Theirisproducessoundwhileoperating.Thisisnotamalfunction.
Mechanical operation
noise is heard after the
power-off process.
• Mechanical operation noise is heard after the power-off process, but this 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.
Images are not 3D.
* The 3D glasses and
3D emitter are sold
separately. They are
not supplied with this
product.
• Isthe3Demitterconnectedtotheprojector?
• Isthereanyblockinthecommunicationareabetweenthe3Demitterandthe3D
glasses?Or,isthereastickerorothersuchitemontheinfra-redreceptionsectionon
the3Dglasses?
The 3D glasses operate by receiving signals from the 3D emitter. Check that there
is not any block in the communication area between the 3D emitter and the 3D
glasses.
• Isthedistancebetweenthe3Demitterand3Dglassestoofar,ortooclose?
Adjust the location of the 3D emitter.
• Arethedirectionofthe3Demitterandthatoftheinfra-redreceptionsectiononthe
3Dglassesmisaligned?
Adjust the direction and location of the 3D emitter.
• Isthe3Dglassesturnedoff?
Turn on the power of the 3D glasses.
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