It is not difficult at all, and you even don’t need a technician.
Our machine has intelligent self-diagnosing and self-correcting functions, so you will easily locate and fix the problem when there is trouble.
For example, when a tray motor gets jammed, an error warning promptly will be shown on the display screen, then you just need to access machine settings and try to get the motor to rotate for a circle by running “motor testing”, and if the motor is not broken inside, it will automatically get back to its initial position and sort the jam out.