Benq MH740 9H.JAT77.23E Owner's Manual

Troubleshooting

60

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 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.

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.

Open the lens cover.

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.

You do not remember the password.

 for details.