From the control panel, navigate to:
Settings > Paper > Tray Configuration > Paper Size/Type > select a paper source
For non-touch-screen printer models, press 
to navigate through the settings.
Set the paper size and type.
From the control panel, navigate to:
Settings > Paper > Tray Configuration > Paper Size/Type > select a paper source
For non-touch-screen printer models, press to navigate through the settings.
Set the paper size and type.