Mitsubishi Electric HC4000 User Manual page 43

Troubleshooting (continued)
Others
Problem
No sound comes
from the speakers
connected to the AV
amplifier.
(No sound comes
from the home theater
system speakers.)
The exhaust vents
emit warm air.
The menu can't be
used.
"TEMPERATURE!!" is
displayed.
The mark appears.
The remote control
doesn't function easily
or at all.
The buttons on the
control panel (except
for the POWER button)
don't function.
Abnormal sound is
heard.
If the following problem occurs after the lamp is replaced, check the following first.
Problem
The projector does not
turn on.
The STATUS indicator
blinks.
Solution
• The projector is not equipped with the speakers.
The AV amplifier reads the information that projector is not equipped with the speakers
and then passes this information along to the DVD player. Because of this, either the
DVD player may be temporarily stopping audio output, or the AV amplifier may be
temporarily stopping audio output from the DVD player.
Change the setting on the AV amplifier or the DVD player.
• This air comes out after cooling the inside of the projector. You may feel hot, but this is
not a malfunction.
• The microcomputers inside the projector may be wrongly operating because of noise.
Press the POWER button to turn off the lamp and wait about 90 seconds. 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.
• 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 air inlet or outlet grille is blocked. When they are kept
blocked, the lamp goes out.
Remove the objects blocking the air inlet or outlet grille.
• This mark appears when ineffective operation is carried out. This isn't a product
malfunction.
• 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.
• 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 35.)
• Because the color wheel spins at a high speed, metallic sounds may be heard in rare
occasions. Such symptom is not a malfunction.
Solution
• Fit the lamp cover securely. (See pages 36 and 37.)
• Reset the lamp operating time. (See page 38.)
• Reset the lamp operating time. (See page 38.)
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