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Troubleshooting
11
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 devie that automatically protects the device 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 9).
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 experienc-
ing interference; try a different channel. Make sure the transmitter and receiv-
er 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
(72MHz or 216MHz) and channel. Make sure the RECEIVE and/or AUX trim
adjustments are turned clockwise. Make sure the unit is not MUTED, indicat-
ed 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 trans-
mitter and receiver. Make sure the audio level is not set too high. For the
216MHz version only, make sure you are not too close to the transmitter (with-
in 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 dis-
play). 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 +12VDC power on the rear terminal block.
LR-100 Troubleshooting