Troubleshooting; The Projector Does Not Turn On; No Picture; Blurred Image - BenQ LH770 User Manual

Troubleshooting

Troubleshooting

The projector does not turn on.

Cause
There is no power from the
power cable.

No picture

Cause
The video source is not turned on or
connected correctly.
The projector is not correctly
connected to the input signal device.
The input signal has not been correctly
selected.

Blurred image

Cause
The projection lens is not correctly
focused.
The projector and the screen are not
aligned properly.

Remote control does not work

Cause
The battery is out of power.
There is an obstacle between the
remote control and the projector.
You are too far away from the
projector.

The password is incorrect

Cause
You do not remember 1. Press and hold AUTO on the projector or remote control for 3 seconds.
the password.
2. Write down the number and turn off your projector.
3. Seek help from the local BenQ service center to decode the number. You
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.
Turn the video source on and check that the signal cable is
connected correctly.
Check the connection.
Select the correct input signal with the SOURCE key on the
projector or remote control.
Adjust the focus of the lens using the focus ring.
Adjust the projection angle and direction as well as the height
of the unit if necessary.
Replace the battery with new one.
Remove the obstacle.
Stand within 7 meters (23 feet) of the projector.
The projector will display a coded number on the screen.
may be required to provide proof of purchase documentation to verify that
you are an authorized user of the projector.
Remedy
Remedy
Remedy
Remedy
Remedy
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