Troubleshooting - Listen LT-700 User Manual

LT-700 Troubleshooting
The LT-700 has no power
Make sure the unit has fully charged batteries, or has a Listen LA-202 wall transformer connected
to it. Press the ON button. If this does not work, try a different set of batteries. Make sure the
batteries are installed correctly.
There is no audio
Make sure the MUTE/TALK switch is in the TALK position. Make sure you have the microphone
plugged all the way in to the input jack. Make sure you are using a Listen approved microphone
(see list on page 8). If you are using the line input, make sure you have connected a line level,
unbalanced input at the "ring" of the connector.
The audio is distorted
Make sure you are using an approved Listen microphone. Try using a different mic sensitivity
switch setting (the switch is located inside the battery compartment of the unit). If you are using a
line level input, try turning down the level of the input. If you are using any equipment that does
not have SQ capability, turn off SQ in the LT-700.
There is hum in the audio
The microphone may be too close to a transformer. Try moving around and see if the hum goes
away.
The microphone level is low
The microphone must be in close proximity to the person who is speaking. If this does not work,
try using a head-worn microphone. The mic sensitivity switch may be on the wrong setting, see
page 8. Try a different setting (the switch is located inside the battery compartment).
Some microphones have directional pickups, ensure that the microphone in use is oriented and
positioned properly (pointing at the speakers mouth).
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