ClassTech, Troubleshooting, Audio

Troubleshooting steps for audio issues in general assignment classrooms.

1) Ensure that the system is on by pressing Display On on the control panel or Start with Audio and Video on a pullout touchscreen. Wait 30-90 seconds for the Display On button to stop blinking, or the touch panel to stop counting down.

2) Turn the volume knob on the control panel all the way up to red, or unmute and turn up the volume control on the touchpanel.

  • Volume Knob
    • A push button controller with the audio control knob in the lower left corner

  •  Touchpanel Volume
    • A touch panel controller with a volume control slider in the lower left corner

3) Turn the master volume knob up on the rack of equipment (where the DVD player is).
  •  Master Volume Knob
    • An Audio Visual rack with a master volume knob in the center

    4) If using a laptop and VGA connection, make sure the audio cable is plugged into the laptop's headphone jack.

    Note: If the instructor is using an HDMI connection (both on laptop and on the lectern) the headphone jack should NOT be plugged in. If the instructor is using an HDMI to VGA adapter (HDMI on laptop, VGA on lectern) the headphone jack must be used.

5) If using the resident PC, ask that the instructor check the volume on the PC itself (lower right corner of the desktop)

6) If using the resident PC and Windows Media Player, ask that the instructor use VLC media player instead as this may improve audio.  

7) If playing YouTube, turn up YouTube's volume by hovering over the megaphone icon and adjusting the slide bar.
  •  Youtube Volume
    • An image of a youtube player with the volume control located one button from the lower left corner of the player

    Keywords:classroom technology, audiovisual, AV, projector, CCME, audio, troubleshooting   Doc ID:64711
    Owner:Class T.Group:University of Illinois Technology Services
    Created:2016-07-05 13:38 CDTUpdated:2017-06-08 10:08 CDT
    Sites:University of Illinois Technology Services
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