Troubleshooting Guide
Please go through this checklist before calling LightSPEED Service Department.
Battery Check:
•Confirm batteries are charged each night. With proper charging, batteries will last about one school year.
•Transmitters are charged via a jumper cable from the back of the LES 780iR. Make sure plugs are secured and in the proper jacks.
•Confirm the green charging light located on the front of the LightMic is on while charging.
•Ensure the LightMic is turned off while charging.
Hearing Static or Buzzing:
•If using two LightMics, check that they are not set to the same channel. If so, select a different channel for one of the LightMics.
•Keep the LES 780iR at least 6 feet away from computers.
Low Volume:
•Check volume level on the LES 780iR and adjust as necessary.
•Check volume level on each of the speakers (on back panel) and adjust as necessary.
Sound Fades In and Out
(Drop Out):
•Test LightMic with fully charged batteries. LED light on front of mic will glow bright red.
No Sound From Speaker:
•Confirm the LightMic and the LES 780iR are turned on and have matching channels. Check both A VOLUME and B VOLUME to ensure they are set correctly.
•Confirm amplifier power supply is the correct
on the back of the 780iR.
•Turn the 780iR on. Confirm that the POWER light located on the front panel switch is on.
•Turn the LightMic on and confirm that the corresponding red IR light, located on the front panel of the LES 780iR, lights. When speaking into the LightMic, the green AF light will flash/flutter with your voice volume.
•Confirm that the batteries in the transmitter are fully charged. When they are, the red indicator will glow steadily.
•Confirm that the speaker wires are in the correct jacks on the back of the LES 780iR and confirm that the speaker switch for that speaker output is in the ON position. Also, confirm that the volume level for each connected speaker is set in the middle position (12 o’clock).
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