BenQ TH575 3800-Lumen Full HD DLP Home Theater Gaming Projector - Manual (Page 40)

40 Troubleshooting
Troubleshooting
The projector does not turn on.
Cause Remedy
There is no power from the power cord.
Plug the power cord into the AC power jack 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.
No picture
Cause Remedy
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.
The lens cover is still closed. Open the lens cover.
Blurred image
Cause Remedy
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 projector if necessary.
The lens cover is still closed. Open the lens cover.
Remote control does not work.
Cause Remedy
The batteries are out of power. Replace both of the batteries with new ones.
There is an obstacle between the remote control
and the projector.
Remove the obstacle.
You are too far away from the projector. Stand within 8 meters (26 feet) of the projector.
The password is incorrect.
Cause Remedy
You do not remember the password. See Entering the password recall procedure on page 21 .