Troubleshooting - Listen Technologies LR-300 User Manual

Receiver Troubleshooting - LR-300, LR-400, LR-500
The receiver has no power.
Make sure the unit has either fully charged batteries or a Listen approved wall transformer
connected. Make sure the VOLUME knob has been rotated to the ON position. If this does
not work, try a different set of batteries. Make sure the batteries are installed properly.
There is no audio.
Make sure you have turned the volume control up. Make sure the earphone is plugged all
the way into the jack on the top of the unit. Make sure the transmitter is broadcasting an
audio source. Make sure you're tuned to the same channel as the transmitter (see page
73). If the RF signal is too weak, the receiver will squelch and mute the audio source; move
closer to the antenna or make sure the transmitter's output RF power switch is set on
"FULL" (LT-800).
The audio is distorted.
Make sure you're receiving on the correct channel. Make sure the audio on the
transmitter is not turned up too loud; this will cause distortion. Make sure the earphone
connector is pushed all the way into the jack on top of the unit. If you're using the
LR-300, re-scan the channels to find the clearest channel (see page 63). Make sure
the SQ™ switch on your transmitter and receivers is turned ON (or OFF, if some of your
equipment is not SQ™ capable). Make sure you are not too close to the transmitting
antenna. If you can't get farther away from the antenna, turn down the RF output power
on the stationary (LT-800) transmitter.
There is interference.
Try different frequencies on the transmitter and receivers until you find a clear channel. If
this does not work, try a different frequency band (i.e. if you are using 72 MHz, try 216 MHz
or vice versa). This is accomplished by returning the equipment to Listen (at no charge).
Please contact Listen technical support for assistance (see page 89 for information).

Troubleshooting

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