User's Manual

CHAPTER 7
TROUBLESHOOTING
48 smarttech.com/kb/171164
l Audio
l Touch and digital ink
Resolving issues with power
Issue Solutions
The display doesn’t turn on and its
indicator light isn’t on.
l Make sure the power cable is properly connected to the wall and display.
l Make sure the switch beside the AC power inlet is in the ON (I) position.
l Make sure the power outlet is working by testing it with a different device.
l Make sure the power cable is working by testing it with a different device.
The display turns on, its status lights
turn on, but nothing shows on the
screen.
See Resolving issues with video below.
Resolving issues with video
Issue Solutions
You’re experiencing the following
or similar issues with video:
l A computer is connected to
the display, but only “Looking
for a connection” appears on
the screen.
l The image on the screen is
flickering, flashing or lines,
double images, snow or
other distortions are
appearing.
l The image is cut off or shifted
to the left or right.
l The image doesn’t fill the
entire screen.
l Make sure the computer is connected to the display with only a single cable.
l Make sure the video cable connecting the display and the computer meets
SMART’s recommendations.
See Connecting cables for room computers, guestlaptops and other input
sources on page21.
l Make sure the cables connecting the display to the computer are securely
fastened.
l Set the computer’s resolution and refresh rate to values supported by the
display.
See Setting connected computers’ resolutions and refresh rates on page40.
l Make sure the video cable and computer are working by testing them with a
different display.
NOTE
Test the video cable and the computer separately to isolate issues.
l Make sure the display connectors are working by testing them with a different
computer or other input source.
l Restart the display.
See Turning the display off and back on on page43.
You’re experiencing other issues
with video or the solutions above
don’t resolve the issue.
l See Referring to the SMART knowledge base for additional troubleshooting
information on page60.