Follow the procedure described below to set the paper size.
Press the [Menu] key.
Press the [ ] or [ ] key to select [Paper Input], and then press the [OK] key.
Press the [ ] or [ ] key to select [Paper Size: (tray name)], and then press the [OK] key.
In the illustration below, [Paper Size: Tray 1] is selected for Tray 1.
Select the paper size you want to set using the scroll keys, and then press the [OK] key.
Press the [Menu] key to return to the initial screen.
For details about paper types supported by the printer, see "Supported Paper Types".