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Maintenance and Troubleshooting
A Lamp Replacement
Refer to Page 11
B Cleaning the Lens
Follow these steps to clean the projection lens:
1. Apply a non-abrasive camera lens cleaner to a soft, dry cleaning cloth (abrasive cleaners,
solvents or other harsh chemicals might scratch the lens).
2. Avoid using an excessive amount of cleaner.
3. Lightly wipe the clean cloth over the lens.
4. Affix the lens cover whenever the projector is not in use.
C Troubleshooting
PROBLEMS
NO POWER
NO PICTURE
IMAGE ISN'T SQUARE
ON THE SCREEN
POOR COLOR
IMAGE IS BLURRED
REMOTE CONTROL
DOESN'T WORK
NO SOUND
Downloaded From projector-manual.com BenQ Manuals
TRY THESE SOLUTIONS
Plug the power cord into the AC Inlet.
Plug the power cord into the power Inlet.
Wait two minutes after the projector has been turned off before turning
the projector back on.
Check that you have selected the proper input source.
Ensure all cables are connected properly.
Adjust the brightness and contrast.
Remove the lens cap.
Is the POWER indictor flashing?
Is the STATUS Indicator flashing?
Reposition the unit to improve its angle on the
Is the vertical offset properly corrected using the keystone function?
Select the correct video
Adjust brightness, contrast, or saturation.
Adjust the
focus.
Reposition the unit to improve its screen angle.
Ensure the distance between the unit and screen is within the adjustment
range of the lens.
Replace the batteries with new ones.
Make sure there is no obstacle between the remote control and the unit.
Stand within 4 meters (13 feet) of the unit.
Make sure nothing is blocking the receiver on the control pad.
Check audio cable connection from audio input source.
Adjust audio source.
Press "Volume" (+) button.
Press "Mute" button.
screen.
system.
4
English 21
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