When the custom size paper is loaded, the user must specify the paper size using the control panel.
Press [Tray Paper Settings] in the upper left corner of the screen.
Press [Paper Tray] tab.
Select the tray for which you want to change the paper size.
Select the [Manual Setting] check box.
Press [Edit the Settings].
Press [Paper Size].
Press [Custom Size].
Press the setting value next to [A:].
Enter the horizontal size using the number keys, and then press [Enter].
Press the setting value next to [B:].
Enter the vertical size using the number keys, and then press [Enter].
Press [OK].
Press [Save Paper].
Press .
Press [Home] () at the bottom of the screen in the center.