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TROUBLESHOOTING GUIDE
If you experience difficulties using your MXT400, refer to the following
chart to correct common operation problems. If you have a problem which
you believe requires service, please call first and speak with a service
technician at 816-241-8500. Many problems can be remedied over the
phone without returning the unit for service.
Problem
No Power
Check vehicle power source (battery); replace
if needed.
Check input power connection and/or wires to
vehicle power source.
Check in-line fuse; replace if needed.
Cannot Receive
Verify both radios have the same Channel and
Privacy Code settings.
Messages
Make sure you are within range of the receiving
radio/repeater.
Confirm transmission is not affected by buildings
and other structures (see About Range)
If communicating with a repeater, verify if
repeater requires activation code.
Keypad is not
Make sure keypad "lock" is not on (see Locking
the Keypad)
Responding
Reset the radio (turn radio off then back on)
Backlight Display
Adjust the display illumination (see Display
is Dim
Illumination)
midlandusa.com
Model MXT400
Solution
Page 24
SPECIFICATIONS
Channels:
Privacy Codes:
Operating Frequency:
Power Source:
Page 25
Model MXT400
15 GMRS Channels and
8 Repeater Channels
38 CTCSS; 104 DCS
UHF; 462.5500 ~ 462.725 MHz
UHF, 462.5625 ~ 467.725 MHz
13.8 VDC Nominal
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