Press [Home] () at the bottom of the screen in the center.
Flick the screen to the left, and then press the [User Tools] icon ().
Press [Tray Paper Settings].
Press [] repeatedly until [Printer Bypass Paper Size] appears.
Press [Printer Bypass Paper Size], and then specify the paper size.
Press [OK].
Press [Paper Type: Bypass Tray].
Press [Paper Type].
Select [Plain Paper], and then press [OK].
Press [Paper Thickness].
Select an appropriate paper thickness, and then press [OK].
Press [User Tools] ().
Press [Home] () at the bottom of the screen in the center.
For details about paper thickness, see "Tray Paper Settings", Connecting the Machine/System Settings.