MITSUBISHI ELECTRIC Mitsubishi Electric LCD HC6800 - Manual (Page 42)

EN-42
Others
Problem Solution
The exhaust vents
emit warm air.
This air comes out after cooling the inside of the projector. You may feel hot, but this •
is not a malfunction.
The menu can’t be
used.
The microcomputers inside the projector may be wrongly operating because of noise. •
Turn off the main power, wait about 10 minutes, and turn on the main power again. 
“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 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 filter, if clogged. 
(See page 39.)
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 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 35.)
Mechanical operating
noise (clicking sound)
is heard.
The iris produces sound while operating. This 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 pages 36 and 37.) •
Reset the lamp operating time. (See page 37.) •
The STATUS indicator
blinks.
Reset the lamp operating time. (See page 37.) •
Troubleshooting (continued)
Images are not displayed correctly. (continued)
Problem Solution
Different color tint. 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.
Only the motion areas
in the images supplied
from the computer
aren’t displayed.
This is caused by the computer being used. Contact the manufacturer of your •
computer.
Projected images are
obscured.
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 45.)
Image remains
freezing.
When image from VCR is projected, it may remain freezing during speed search. This •
is not a malfunction.
Noise appears around
the image.
In some images such as DVD, noise may appear around the recorded image. In this •
case, decrease the setting value of OVER SCAN of the SIGNAL menu. (See page 29.)