CHAPTER 5
TROUBLESHOOTING
34
Symptom
Troubleshooting steps
There is a whine or buzzing sound
coming from the back of the
display.
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Be aware that these sounds are normal. All displays emit some electrical noise.
Such sounds may be more noticeable with some displays than with others.
However, if you hear noise from the front of the display, further investigation is
required.
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Connect all devices to the same power outlet or power bar.
Touch isn’t working as expected
Symptom
Troubleshooting steps
The display doesn’t respond to
touch.
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Make sure
or later are installed and running on
any connected computers.
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Make sure the USB cable between the display and the computer doesn’t exceed
the supported maximum cable length. See
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Make sure any connected computers have detected the display’s USB
connection and
or later is installed.
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On Windows computers, open Device Manager and make sure there is no red X
or yellow explanation mark (!) over the display’s icon.
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On Mac computers, open System Information and make sure there are no error
messages in the display’s row.
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For Mac computers with macOS Mojave, see
installing and using SMART Learning Suite software on macOS Mojave
The display responds to touch
intermittently.
OR
When you touch the screen, the
pointer doesn’t appear in the
correct place.
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Restart the display.
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Confirm with the installers that the computer is connected to the display with
only a single cable.
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Remove infrared sources, such as incandescent or arc lights, desk lamps, and
infrared audio devices, or move the display to another location in the room.
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Remove any USB extenders to help isolate the USB cable.
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