Mitsubishi Electric TX20U User Manual page 73

Troubleshooting (continued)
Images are not displayed correctly. (continued)
Problem
Projected images are
obscured.
Noise appears around the
image.
Projected images are
flickering.
Projector images are
twitching.
Others
Problem
The exhaust vents emit
warm air.
No audio is output.
The menu can't be used.
"TEMPERATURE!!" is
displayed.
The mark appears.
The remote control
doesn't function easily or
at all.
The fans sound during
standby.
Solution
• 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 79.)
• Some images and texts appear obscured during the keystone adjustment. In such
cases, use the projector without applying the keystone adjustment. (See page 17.)
• 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
30.)
• After the POWER button or ON button on the remote has been pressed, or the
LAMP MODE setting has changed, images may be flickering until the lamp lights
stably. This is an expected behavior.
• When selecting the input signal, AUTO POSITION, and Image, the projected image
may be flickering temporarily. This is not a product malfunction.
• During LAMP MODE LOW2 is switched, projector images are little bit flickering for a
moment with constant timing. This phenpmenon is to keep lamp condition well and
is not a malfunction.
• Projector may be vibrating. Set AUTO KEYSTONE to OFF or lower the VOLUME
button of the Remote control.
Solution
• This air comes out after cooling the inside of the projector. You may feel hot, but this
vis not a malfunction.
• Check that the volume isn't set to low.
• When the external device is connected with an HDMI cable, set the audio output of
the device to PCM output.
• The microcomputers inside the projector may be wrongly operating because of
noise.
Press the POWER button to turn off the lamp and unplug the power cord from
the wall outlet. Wait about 10 minutes, plug the power cord in, and try again.
• 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 9.)
• 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.
• When STANDBY MODE is set to STANDARD, 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.
EN-73