Smart Technologies SBID-MX265, Руководство по установке и обслуживанию, Страница: 73 / 110

CHAPTER 7
TROUBLESHOOTING
61 smarttech.com/kb/171257
Issue Solutions
No image appears on a device
you've connected to the display's
HDMI OUT connector. See Using a secondary display .
The image from a device
connected to the VGA port is cut-off
or not centered.
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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.
You’re experiencing other issues
with video or image quality, or the
previous solutions don’t resolve the
issue. See Referring to the SMART knowledge base for additional troubleshooting
information on page 73.
Resolving issues with audio
Issue Solutions
You’re experiencing the following
or similar issues with audio:
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No sound is coming from the
speakers.
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Sound is coming from the
speakers, but the volume is
low.
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The sound is distorted or
muffled.
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If you’re using external speakers, make sure the speakers are turned on.
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Make sure the cables connecting the display to the computer are securely
fastened.
NOTES
o
The display’s stereo 3.5 mm in connector works with the VGA input.
o
Connecting an audio cable to the display’s stereo 3.5 mm out connector
disables the internal speakers.
o
If you’re using the display’s S/PDIF out connector to connect a sound
bar or receiver for external speakers, see
Connecting external
speakers on page 25.
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Adjust the volume on the display and the connected computer, and make sure
both are not muted.
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Make sure the display is set as the default audio device for the connected
computer.
See the connected computer’s operating system documentation.
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If you’re using the display’s integrated speakers, set the volume for the
computer and any running applications to 80%, and then adjust the display’s
volume.
OR
If you’re using external speakers, set the volume for the computer, any running
applications and the display to 80%, and then adjust the speakers’ volume.
A whine or buzzing sound is coming
from the back of the display.
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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, contact
SMART Support .
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Make sure all devices are connected to the same power outlet or power bar.
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If the computer is connected to the display with analog audio cables (for
example, 3.5 mm audio cable with the VGA video input), make sure you are
using high-quality cables with electromagnetic interference (EMI) protection.
Make sure audio cables don't run alongside power cables.
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Use a digital HDMI connection for video and audio. Audio hum is far less
common with digital connections than it is with analog.
You’re experiencing other issues
with audio, or the previous solutions
don’t resolve the issue. See Referring to the SMART knowledge base for additional troubleshooting
information on page 73.