BenQ GV10 User Manual page 39

Problem
No input source.
Image or audio is unstable.
Picture is blurred.
Remote control does not work correctly.
Cause
The video source is not turned on or
connected correctly.
The projector is not correctly connected to
the input source device.
The video or audio file format is not
supported by the projector.
The connection cables are not securely
connected to the projector or the signal
source.
The projection lens is not correctly focused. Adjust the focus ring.
The projector and the screen are not
aligned properly.
The batteries are out of power.
There is an obstacle between the remote
control and the projector.
You are too far away from the projector.
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Remedy
Turn the video source on and check that the signal
cable is connected correctly.
Check the connection.
Make sure the supported file format as described in
Supported file formats on page 45
contact the customer service for assistance.
Correctly connect the cables to the appropriate
terminals.
Adjust the projection angle and direction as well as the
height of this projector if necessary.
Replace both of the batteries with new ones.
Remove the obstacle.
Stand within 8 meters (26.2 feet) of the projector.
is being played, or