Xerox N3225 - Manual (Page 43)

Loading Paper
Chapter 2: Loading Print Media ❖ 2-11
8 Adjust the paper guide to the paper width.
Make sure the guide is locked firmly in the guide
hole on the bottom of the tray, and that both the
side and width guides are set correctly for the size
of paper you are using.
9 If changing paper size, you may want to insert the correct
paper size label in the paper size slot on the front of the
tray.
10 Push the tray all the way back into the printer until it
latches.