BenQ PE8720 Manuel d'utilisateur télécharger pdf (Page 35)

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Troubleshooting

Problem Cause Remedy

The projector does

not turn on.

There is no power from the power

cable.

Plug the power cable into the AC inlet on the

rear of the projector, and plug the power

cable into to the power outlet. If the power

outlet has a switch, make sure that it is

switched on. (See page 19)

The power switch is not in the on

position.

Put the power switch in the on position. (See

page 19)

Attempting to turn the projector on

again during the cooling process.

Wait until the cooling down process has

completed.

The lamp cover is not securely

attached.

Correctly attach the lamp cover. (See page

33)

No picture.

The video source is not turned on or

connected correctly.

Turn the video source on and check that the

signal cable is connected correctly. (See page

17)

The projector is not correctly

connected to the input source device.

Check the connection. (See page 17)

The input signal has not been

correctly selected.

Select the correct input signal with the

Source buttons on the remote control or

SOURCE / ENTER on the projector. (See

page 19)

Image is unstable.

The connection cables are not

securely connected to the projector or

the signal source.

Correctly connect the cables to the

appropriate terminals. (See page 17)

Picture is blurred.

The projection lens is not correctly

focused.

Adjust the focus of the lens using the focus

ring. (See page 20)

The projector and the screen are not

aligned properly.

Adjust the projection angle and direction as

well as the height of this unit if necessary.

(See page 19)

The lens cap is still attached to the

lens

Remove the lens cap. (See page 19)

Remote control does

not work correctly

The batteries are out of power. Replace both of the batteries with new ones.

(See page 9)

There is an obstacle between the

remote control and the projector.

Remove the obstacle. (See page 13)

You are too far away from the

projector.

Stand within 8 meters (26.2 feet) of the

projector. (See page 13)

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BenQ PE8720 Manuel d'utilisateur Page 35

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