Safety and Accident Prevention Main electric box 21 Pause Press the [STOP/PAUSE] button on the machine. There is a total of four [STOP/PAUSE] buttons on the machine, on the left and right sides of the front and rear sides. If a [STOP/PAUSE] button is pressed, printing is paused and the head comes to a stop at either the flushing area or the cleaning station. Press the [Start] button for Leonardo to resume printing.