Lexmark 4227 User Manual page 24

5
Set the left margin. For help, see "Aligning the Left Margin"
on page 74.
Before inserting paper, make sure that the left paper guide is
aligned flush with the [A symbol printed on the margin guide.
If the paper guide is not properly aligned, the Demo page
prints incorrectly.
Margin guide
Left Paper Guide
18
Chapter 1: Getting Started