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3M Super Close Projection System SCP712 Operator’s Guide
© 3M 2008. All Rights Reserved. 23
Troubleshooting
Common Problems and Solutions
Symptom Cause Solution
No power. The power cord is disconnected. Insert the power cord into AC socket.
The desired input source is not selected.
Press the remote control Input button to
select a desired input source.
The cables from the input source are not
connected.
Connect the cable to correct input
source.
No picture or sound.
The input source is not turned on or not
displaying an image. (e.g. If a notebook
computer, the external monitor port is
not turned on).
Turn on input source.
The internal temperature is too high. Check exhaust for obstructions.
The lamp will not ignite or has turned
off.
The lamp has reached maximum life or
has prematurely failed.
Replace lamp.
The VGA/Video cables are not
connected.
Connect the cables to the correct input
source.
Sound is heard with no picture.
The VGA/Video/Audio cables are
connected to the wrong input.
Change Input Menu to correct video
input setting.
The audio cables are connected to the
wrong input.
Connect the cables to the correct input
source.
Check the audio/video configuration.
Set proper configuration through the
menu.
The volume is set to Minimum. Turn up Volume.
Picture is displayed with no sound
The Mute is on. Turn off Mute.
The brightness setting is too low. Adjust the brightness
Picture is dark or dim.
The lamp needs to be replaced. Replace lamp.
The input source is not active. A signal
must be present for the input to be
selected.
Connect an active input source to unit.
Desired input source cannot be
detected.
The input device (e.g. computer, DVD
player, etc.) is not turned on.
Turn on input source.
The remote control is not facing the
remote control sensor.
Face the remote control toward the
remote control sensor.
The remote control is too far from the
sensor.
Operate the remote control within 5
meters.
An obstruction is between the remote
control and the sensor.
Remove obstacle.
The remote control does not work.
The remote control’s batteries are
exhausted or inserted wrong.
Correctly insert batteries.
23


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