Troubleshooting - BenQ Commuter CP120 User Manual

Troubleshooting

The projector does not turn on.
Cause
There is no power from the power
cable.
Attempting to turn the projector on
again during the cooling process.
No picture.
Cause
The video source is not turned on or
connected correctly.
The projector is not correctly
connected to the input source device.
The input signal has not been
correctly selected.
The lens cover is not open.
Image is unstable
Cause
The connection cables are not
securely connected to the projector or
the signal source.
Image is blurred.
Cause
The projection lens is not correctly
focused.
The projector and the screen are not
aligned properly.
The lens cover is not open.
Remedy
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. See
up" on page 21
Wait until the cooling down process has
completed. See
details.
Remedy
Turn the video source on and check that the
signal cable is connected correctly. See
"Connection" on page 16
Check the connection. See
page 16
Select the correct input signal with the
SOURCE button on the projector or remote
control. See
26
Slide open the lens cover.
.
Remedy
Correctly connect the cables to the
appropriate terminals. See
page 16
Remedy
Adjust the focus of the lens using the focus
ring. See
clarity" on page 24
Adjust the projection angle and direction as
well as the height of the unit if necessary. See
"Obtaining a preferred projected image size"
on page 12
Slide open the lens cover.
for details.
"Shutdown" on page 27
for details.
"Switching input signal" on page
for details.
for details.
"Fine-tuning the image size and
for details.
for details.
Troubleshooting
"Start
for
for details.
"Connection" on
"Connection" on
51