Listen Portable fm 863 Mhz, Manual Manual

Page: 69 / 76

63
Supplementary
Troubleshooting
Troubleshooting
The unit has no power.
Make sure the unit has fully charged batteries, or has a Listen LA-208 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 21). 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. Make shure the receiver is “ON” and receiving the appro -
priate channel.
There is hum in the audio.
The microphone may be too close to a transformer. Try moving away from the transformer and see if
the hum goes away.
The microphone level is low.
The mic sensitivity switch may be on the wrong setting, (see page 21). 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).
The microphone must be in close proximity to the person who is speaking. If this does not work, try using
a head-worn microphone.
There is too much noise.
This is most likely because the microphone is not close enough to the talker’s mouth, and it is picking up
background noise. Try positioning the microphone closer or try using a microphone that is directional
(such as a head-worn mic). Try another setting on the mic sensitivity switch (located inside the battery
compartment).
There is interference.
Try a different frequencies to find a clear channel. Use a receiver to sweep the area without any
transmitters “on”. The receiver will stop on any channels that are being broadcasted in the area. A
void the channels that the receiver detects having a signal.
i cannot pick up the signal on the receiver
Make sure the transmitter and the receiver are on the same frequency channel.
it’s confusing for users to have 17 available channels
Use the PROGRAM function (LT-700 and LR-500 only) to lock out unwanted channels. Users will only be
able to scroll through available channels.
i cannot change the channel
The transmitter or reciever may be locked on a channel (check for the padlock icon). To unlock, press
and hold the UP or DOWN button for 5 seconds.