Deflection motor failure is generally caused by the optocoupler, pay special attention to the lift motor position optocoupler, because the sampling needle in the movement, the lift motor movement to be preceded by the deflection motor, if the lift motor optocoupler failure occurs, it will also report the deflection motor failure.
Generally speaking, it is the lift motor photocoupler failure, the instrument will occasionally report the lift motor failure, occasionally report the deflection motor failure, or report together