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Receiver won’t turn on (power light doesn’t turn on)
• Verify that the power supply is plugged into both the receiver and a working wall outlet
• Test with another power supply
’Dead spots’ or microphone crackling/noise
• Verify that you are not blocking either the emitters on the microphone or the sensors mounted around
room
• If reception is interrupted or noisy when facing a certain direction, install an additional sensor in that area
of the room
• If using more than one microphone, verify that they are not on the same channel
• Recharge or replace the microphone batteries
No signal reception (channel indicator light on receiver is red)
• Check that the microphone is on
• Check that the microphone is not muted (940TM only)
• Verify that you are not blocking either the emitters on the microphone or the sensors mounted around
the room
• If reception is interrupted when facing a certain direction, install an additional sensor in that area
of the room
• If using more than one microphone, verify that they are not on the same channel
• Recharge or replace the microphone batteries
Feedback (squealing)
•
Lower the Microphone A or B Volume control(s) on the receiver
• Make sure that speakers are mounted as close as possible to the ceiling and to the listening area; avoid
mounting speakers in the teacher’s primary lecture area
• Position the microphone closer to mouth
• Set the gain switch on the pass-around microphone to "mid" or "low"
• Reduce treble setting on EQ (rear panel)
Weak or no output from speaker(s)
•
Increase the Microphone A or B Volume or Audio In Volume control(s) on the receiver, or audio device
• Position the microphone closer to mouth
• Set the gain switch on the pass-around microphone to "mid" or "high"
• Verify that the speakers have been properly installed
High or low pitched whine or hum coming through speakers
•
There may be a ground loop with the system. Install a ground loop isolator
• There may be "noisy" electrical wiring. Install an AC line filter
Charger light won't come on or is blinking red
•
Check that the charger is connected to a working power outlet
•
The charger can charge only 950H and 940TM microphones with charge contacts.
•
You may be attempting to charge an alkaline battery or a rechargeable battery that has reached the end of
its useful life. Check the battery and replace with a FrontRow "silver sleeve" rechargeable battery.
Appendix C:
Troubleshooting
Summary of Contents for Lasso
Page 1: ...lasso INSTALLER GUIDE ...
