Troubleshooting – BenQ SP870 User Manual
Page 49
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Troubleshooting
Troubleshooting
The projector does not turn on.
No picture
Blurred image
Remote control does not work
The password is incorrect
Cause
Remedy
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.
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 on
the projector or remote control.
The lens cover is still closed.
Open the lens cover.
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.
Cause
Remedy
The batteries are out of power.
Replace 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.
Cause
Remedy
You do not remember the password.
Please see
"Entering the password recall procedure" on
for details.