BenQ PE5120 - Manual (Page 33)

33 Additional information
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 rear of 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 source
device. Check the connection.
The input signal has not been
correctly selected. Select the correct input signal with the
Input buttons on the remote control or
Source on the projector.
The lens cap is still attached to the
lens. Remove the lens cap.
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 projector if
necessary.
The lens cap is still attached to the
lens Remove the lens cap.
Remote control
does not work
correctly
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 6 meters (19.5 feet) of the
projector.