BenQ SP870 SP870 User Manual - Page 49

Troubleshooting - projector troubleshooting

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English Troubleshooting The projector does not turn on. Cause Remedy Plug the power cord into the AC inlet on the projector, and There is no power from the power cable. 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. No picture Cause Remedy The video source is not turned on or connected Turn the video source on and check that the signal cable correctly. 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 the projector or remote signal with control. the SOURCE key on The lens cover is still closed. Open the lens cover. Blurred image Cause The projection lens is not correctly focused. The projector and the screen are not aligned properly. The lens cover is still closed. Remedy Adjust the focus of the lens using the focus ring. Adjust the projection angle and direction as well as the height of the projector if necessary. Open the lens cover. Remote control does not work 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. The password is incorrect Cause You do not remember the password. Remedy Please see "Entering the password recall procedure" on page 25 for details. Troubleshooting 49

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49
Troubleshooting
English
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
page 25
for details.