Listen LR-100 Series, User Manual

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Information Information
Information
LR-100 Troubleshooting
Troubleshooting
The unit does not power up
Ensure the power supply and/or battery is connected properly. Please note: this product no longer
utilizes internal fuses. The fuses have been replaced with an automatic resetting device that automatically
protects the unit in an overload condition. See Appendix F: Resetting After an Overload Condition for
more details.
The audio is muted occasionally.
Check to see if the unit is squelching (indicated by the squelch LED). In this case, either improve the RF
signal path or adjust the squelch setting for less squelch sensitivity (see page 14).
I hear noise coming from the receiver (with my audio)
.
You may have inadequate RF signal strength. Adjust the positioning of the antennas. Make sure the
transmitter is on high power. You may be experiencing interference; try a different channel. Make sure the
transmitter and receiver are on the same channel.
The channel is often accidentally changed.
Lock the unit on channel by pressing and holding the SEEK button for five seconds. The padlock symbol is
illuminated on the LCD.
There is no audio.
Make sure the transmitter and the receiver are on the same frequency band (72 MHz or 216 MHz) and
channel. Make sure the RECEIVE and/or AUX trim adjustments are turned clockwise. Make sure the unit
is not MUTED, indicated by the MUTE LED. Make sure the unit is wired correctly. Make sure the squelch
adjustment is set correctly.
The audio is distorted.
Make sure the transmitter and receiver are on the same channel. Make sure that the SQ switch is set the
same way either ON or OFF for both the transmitter and receiver. Make sure the audio level is not set too
high. For the 216 MHz version only, make sure you are not too close to the transmitter (within 40 feet).
The OUTPUT level is low.
Make sure the MIC/LINE switch is in LINE. Adjust the RECEIVE or AUX input levels.
There is no audio on the speaker.
Make sure the speaker selection switch is in the correct position. Ensure that you have a good speaker.
I can’t hear AUX audio on the OUTPUT.
Move the OUTPUT audio selection switch to either “RX + AUX” or “RX or AUX” depending on your
application.
I cannot change channels.
The unit is locked on channel (this is indicated by the padlock icon on the display). Press and hold the
SEEK button for five seconds to toggle the lock off.
The power switch does not work.
This is normal when using the +12 VDC power on the rear terminal block.
If you are still having problems after checking the above items, call Listen for help. We are available from
8am to 5pm Mountain time, Monday through Friday, at 800.330.0891 or 801.233.8992, or you can e-mail us at
support@listentech.com. Our full contact information is available on page 24 of this manual.