How do I load paper into the paper input tray of the SCX-4200?

Pull open the paper input tray and remove it from the machine, then fan the edges of the paper stack and tap it on a flat surface to even it up. Insert the paper stack with the side to be printed on facing down, and pay attention to the paper limit mark on the inside walls to avoid overloading. The paper input tray holds a maximum of 250 sheets of 20 lb (75 g/m²) plain paper. After loading, set the paper size and type using the control panel. (Page 2.3)