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Maintenance and Troubleshooting
Symptom
The power is
not turned on
No video
No audio
No remote
function
Colors are
pale
Abnormal
brightness
& contrast
Video is
blurred
Note ： Although bright spots or dark spot may appear on the screen ,this is a
unique characteristic of liquid crystal displays,and it does not constitute or imply
a machine defect.
74
Possible cause
The main power switch is not
turned on.
The power cord is
disconnected.
The input is not correctly
connected.
No signal input.
No open lens cover.
The projector is not correctly
connected.
The volume is set to minimum.
Mute is turned on.
No battery.
Remote signal be obstructed
Color density and color
matching are not correctly
adjusted.
Color lose.
Brightness and contrast are
not correctly adjusted.
The lamp is nearing the end
of its service life.
Focus or RGB phase is out of
adjustment.
Remedy
Turn on the main power
switch.
Plug the power cord into
an AC power outlet
Select the appropriate input
source.
Connect correctly.
Remove the lens cover.
Check audio cable connect
correctly.
Adjust the volume.
Press the MUTE button.
Check battery of remote
controller.
Remove obstacle between
projector and remote
controller.
Adjust the RGB setting.
Check VGA cable.
Adjust the brightness and
contrast setting.
Replace with a new lamp.
Adjust the focus and phase.
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