You can
change the default paper settings using the control panel on the
product.
Press the home button, if
necessary.
Select Setup >
Printer Setup > Paper Source Settings.
Select the following options as necessary:
Paper Setup: Changes the default paper size
and paper type settings.
Paper Setting Alert: Controls whether or not
an alert appears when a print job's paper settings are different
from the product's default paper settings.
Paper Configuration: Controls whether or not
the paper settings selection screen appears after you load
paper.