BenQ TH683 - Manual (Page 66)

Troubleshooting 66
Troubleshooting
Problem Cause Remedy
The projector does
not turn on.
There is no power from the power
cable.
Plug the power cord into the AC inlet
on the projector, and plug the power
cord into the power outlet. If the power
outlet has a switch, make sure that it is
switched on.
Attempting to turn the projector on
again during the cooling process. Wait until the cooling down process has
completed.
The lamp cover is not securely attached. Correctly attach the lamp cover.
No picture.
The video source is not turned on or
connected correctly. Turn the video source on and check that
the signal cable is connected correctly.
The projector is not correctly
connected to the input signal device.
Check the connection.
The input signal has not been correctly
selected.
Select the correct input signal with the
SOURCE key on the projector or
remote control.
Image is unstable.
The connection cables are not securely
connected to the projector or the signal
source.
Correctly connect the cables to the
appropriate terminals.
Picture is blurred.
The projection lens is not correctly
focused. Adjust the focus of the lens using the
focus ring.
The projector and the screen are not
aligned properly.
Adjust the projection angle and direction
as well as the height of the unit if
necessary.
The lens cover is still closed. Remove the lens cover.
Remote control
does not work.
The battery is out of power. Replace the battery with new one.
There is an obstacle between the
remote control and the projector.
Remove the obstacle.
You are too far away from the projector.
Stand within 7 meters (23 feet) of the
projector.
3D content does
not display correctly.
The 3D glasses are out of battery. Recharge the 3D glasses.
The settings in the 3D menu are not set
correctly. Correctly set the settings in the 3D
menu.
Your Blu-ray Disc is not in 3D format. Use a 3D Blu-ray Disc and try again.
The input source has not been correctly
selected.
Select the correct source with the
SOURCE key on the projector or
remote control.