Classroom Technology- Troubleshooting Classroom Microphones

The microphones in the classrooms have many fail points. These are steps you should take when troubleshooting.

Always bring a key for the lectern and a spare battery with you.

• Equipment

  • Check if the transmitter is turned on and battery levels are sufficient.

    • Solution: Replace the batteries.

  • Check if the Receiver (located in the lectern) is powered on and the levels are rising when speaking into the transmitter.

    • Solution: Check to make sure the group and channel match on the transmitter and receiver.

  • Receiver display LEDs are not lighting up.

    • Solution: Replace the power supply.

  • Check if the 3.5mm cable is connected to the local PC mic input.

    • Solution: Locate the 3.5mm and connect to the Local PC mic input.

• Crestron Touchscreen

  • Check the mic levels and verify the mute function isn’t turned on.

    • Solution: Unmute the mic and set the volume to 90%.

• Local PC settings

  • Right-click the taskbar speaker, then click Open Sound Settings to view the mic input levels.

    • Cycle the 3.5mm cable connected to the local PC mic input to see if the PC registers the device.

    • Power cycle the DMPS.

    • Reboot the application utilizing the mic.

    • Reboot the local PC.