Mitsubishi Electric HC4900 User Manual page 40

Troubleshooting (continued)
Images are not displayed correctly. (continued)
Problem
Different color tint.
Only the motion areas
in the images supplied
from the computer
aren't displayed.
Projected images are
obscured.
Image remains
freezing.
Others
Problem
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.
If the following problem occurs after the lamp is replaced, check the following fi rst.
Problem
The projector does not
turn on.
The STATUS indicator
blinks.
Solution
• When comparing images projected by two projectors, tints in the displayed images
may be different because of variation between their optical components. This is not a
malfunction.
• When comparing the image projected by this projector with those displayed on the
television or PC monitor, tints in the displayed images may be different because of
difference in the range of color reproducibility. This is not a malfunction.
• This is caused by the computer being used. Contact the manufacturer of your
computer.
• Match the output resolution of your computer with the resolution of the projector.
For the method to change the output resolution of the computer, contact the
manufacturer of your computer. (See page 43.)
• When image from VCR is projected, it may remain freezing during speed search. This
is not a malfunction.
Solution
• 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 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.
• 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. Clean the fi lter, if clogged.
• 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 fl uorescent
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 34.)
Solution
• Fit the lamp cover securely. (See pages 35 and 36.)
• Reset the lamp operating time. (See page 36.)
• Reset the lamp operating time. (See page 36.)
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EN-40