21. Troubleshooting
Even though the model and the remote control system are state-of-the-art products, there can still be malfunctions or
faults. For this reason, we would like to give you some information on how to deal with possible problems.
Problem
The transmitter does not
respond.
The transmitter shuts itself off
Range too low
The model does not respond
The model moves
uncontrollably/jerkily
Strong rotor vibrations
Servos are buzzing
64
Remedy
• Check batteries in the transmitter.
• Check the polarity of the batteries in the battery compartment
• Check the power switch
• Check batteries in the transmitter and - if necessary - replace them
• Check batteries in the transmitter and - if necessary - replace them
• Check flight battery and - if necessary - charge it
• Check flight battery and - if necessary - charge it
• Tune the receiver to the transmitter
• Check flight battery and - if necessary - charge it
• Install the receiver aerials in a different position
• Tune the receiver to the transmitter
• Balance the rotor blades
• Make sure the shafts run smoothly
• If there are resonance effects caused by the speed, try operating the helicopter
at a higher or lower speed
• Check the moving parts for play in their bearings
• Adjust the controls for pitch limit and rotor speed (see ill. 1, pos. 5, 6).
• Adjust the servo linkage so that the swashplate can not touch the rotor head
or the mechanical unit.
• Make sure the rotor head mechanism runs smoothly.