Maintenance and Troubleshooting
Symptom | Possible cause | Remedy |
The power is not turned on
No video
No audio
No remote function
Colors are pale
Abnormal brightness & contrast
Video is blurred
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.
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.
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.
51
