HP 2250 - Manual (Page 17)

2-9
Wait while the printer initializes the printheads. This may take up to 8
minutes. The LCD panel will ask you to load paper and an alignment
page will print.
6
Load paper in Tray 1.
If you wish to remove Tray 1 to load the paper, first lift up the output tray
(do not remove the output tray). Before reinserting Tray 1, make sure the
printer is plugged in and powered ON.
print side