SMART Board MX Series User Manual page 34

Chapter 6
Troubleshooting
Issue
A computer is connected to the
display, but only a "No Signal"
message appears on the screen.
If an AM50 iQ appliance with an Intel
Compute Card is installed in the
display and a "No Signal" message
appears on a blue screen.
No image appears on a device you've
connected to the display's HDMI OUT
connector.
The image from a device connected to
the VGA port is cut-off or not centered.
You're experiencing other issues with
video or image quality, or the previous
solutions don't resolve the issue.
smarttech.com/kb/171284
Solutions
Connect the computer to one of the display's video input connectors.
l
NOTE
In the input source menu, video input connectors that have a device connected are
blue.
Make sure the computer is the currently selected input.
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Make sure the connected computer's video connector is configured to output a
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supported video signal. See
If you're using two connected video cables, use one longer cable or move the computer
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so it's within a single cable length of the display. Make sure the cable length is within the
maximum length specified in the display's specifications.
The computer is using a video resolution or refresh rate that the display doesn't
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support. Set the computer to a supported resolution and refresh rate.
Make sure the computer hasn't entered Sleep mode. Press a key on your computer's
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keyboard to wake it up.
Make sure the Windows operating system on the Intel Compute Card hasn't entered
Sleep mode. Tap the display's screen to wake up the operating system.
See Using a secondary display.
Make sure the computer's background is not a dark or solid-black image.
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Switch to a different video input source, then switch back to the VGA input.
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See Referring to the SMART knowledge base for additional troubleshooting information
on page 39.
No video display output from a laptop.
34