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This troubleshooting guide has been provided to help you diagnose and solve most problems that you may encounter
with your MX-Sport 2.4GHz FHSS-2 radio control system. Most problems encountered can be solved by following
the problem-cause-solution sections.
If you cannot solve the problem using this troubleshooting guide, please contact us using the information on the
back cover of this Operating Manual.
Batteries not installed correctly
Damage caused by using incorrect
charger or reverse polarity
Low transmitter battery voltage
Too much time elapsed after pressing
receiver Bind Button
Attempting to bind incompatible
receiver
Using electronic speed control
Low transmitter battery voltage
Control linkages binding
Low receiver battery voltage
Low transmitter or receiver battery
voltage
Receiver antenna not mounted
correctly or is damaged
Transmitter antenna not angled to
optimum position
Incorrect Servo Reversing setting
Servo horn not installed correctly
Trim switch not adjusted
Too much servo travel
Transmitter left in direct sunlight for
too long
ABS function Activated
Steering and/or throttle trim out of
adjustment
Transmitter does not turn ON
Transmitter will not bind to receiver
Audible alarm beeps continuously
Servo movement is slow
Inadequate transmitting range
Servo(s) move the wrong direction
Servo horn(s) not centered
Control linkage(s) bind
LCD appears dark or hard to read
Throttle servo pulsates
Model veers right or left or motor
turns ON unexpectedly
Reinstall batteries. Observe correct
polarity
Contact Airtronics Customer Service
Replace or recharge transmitter
batteries
Quickly press the transmitter Bind
Button after releasing the receiver
Bind Button
Transmitter compatible only with
Airtronics 2.4GHz FHSS-2 surface
receivers
Disconnect ESC and use standard
receiver battery for Binding procedure,
then reconnect ESC after binding
Replace or recharge transmitter
batteries
Adjust control linkages to operate
smoothly
Recharge receiver battery
Replace or recharge batteries
Mount receiver antenna as recommended
or replace antenna
Adjust transmitter antenna so that it's
vertical during use
Change Servo Reversing setting in
REV menu
Turn servo horn 180º and reinstall
Use trim switch to center servo horn
Reduce servo travel using EPA menu
or Dual Rate function
Place transmitter in shade until LCD
clears up. Do not place transmitter in
direct sunlight for long periods of time
This is normal when the ABS function is
Activated and brake is applied
Adjust steering and/or throttle trim using
trim switches
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