A control system includes a control circuit. The control circuit is to be connected to a head unit including first driving elements and second driving elements. Based on an input print data, the control circuit applies a first signal to the first driving element and applies a second signal to the second driving elements. The control circuit changes the first signal to a third signal in a first time and changes the second signal to a fourth signal in a second time. Based on an input print data, the control circuit applies the third signal to the first driving element and applies the fourth signal to the second driving elements.