Boxlight CD-725c ユーザーズマニュアル

Troubleshooting

25

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Make sure the power cord is inserted snuged into the AC adapter 
socket.

•

Make sure the power cord is inserted snuged into the power 
outlet.

•

Toggle the power switch to the position “1”.

•

Wait two minutes after the projector is turned off before turning 
the projector back on.

•

Check for the proper input source.

•

Ensure all cables are connected properly.

•

Adjust the brightness and contrast. 

•

Remove the lens cap.

•

Reposition the unit to improve its angle on the screen.

•

Use  the  Keystone correction key on the control panel of the 
projector or the remote control unit.

•

Select the correct video system.

•

Adjust brightness, contrast, or saturation.

•

Press Auto on the control panel of the projector or the remote 
control unit to get better picture quality.

•

Adjust the focus. 

•

Reposition the unit to improve its projection angle.

•

Ensure the distance between the unit and screen is within the 
adjustment range of the lens.

•

Replace the batteries with new ones.

•

Make sure there is no obstacle between the remote control and 
the projector.

•

Stand within 4 meters (13 feet) of the projector.

•

Make sure nothing is blocking the front and rear receivers.