BenQ MX812ST, MW811ST user manual Troubleshooting, Please see Entering the password recall

Troubleshooting

The projector does not turn on.

Cause	Remedy
	Plug the power cord into the AC power jack on
There is no power from the power	the projector, and plug the power cord into the
cord.	power outlet. If the power outlet has a switch,
	make sure that it is switched on.
Attempting to turn the projector on	Wait until the cooling down process has
again during the cooling process.	completed.
No picture

Cause	Remedy
The video source is not turned on or	Turn the video source on and check that the
connected correctly.	signal cable is connected correctly.
The projector is not correctly	Check the connection.
connected to the input signal device.
The input signal has not been	Select the correct input signal with the
	SOURCE key on the projector or remote
correctly selected.
	control.
The lens cover is still closed.	Open the lens cover.
Blurred image

Cause	Remedy
The projection lens is not correctly	Adjust the focus of the lens using the focus
focused.	ring.
The projector and the screen are not	Adjust the projection angle and direction as
aligned properly.	well as the height of the projector if necessary.
The lens cover is still closed.	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	Remove the obstacle.
remote control and the projector.
You are too far away from the	Stand within 8 meters (26 feet) of the
projector.	projector.
The password is incorrect

Cause	Remedy
You do not remember the password.	Please see "Entering the password recall
	procedure" on page 28 for details.

Troubleshooting 71