Stranded dragon does not turn, first the dust in the hanging dragon under the clear, see if there is something fell into the stuck, if not, and then the winch and off fan connection chain removed, test test whether the off fan can work properly, if not turn, and then put The reducer motor on the off fan is removed, separately test whether the motor is working and running, if not turn the motor is damaged, if the operation is the imperfle stuck in the off fan, to remove and re-adjust the impulsion and shut down the fan box gap!
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