Lexmark 4I3 - Manual (Page 69)

2. If the first print line is not where you want it to be, press Micro ,
Micro , or Line Feed until it reaches the desired line.
Note: If you need to adjust the paper downward, adjust at least
five steps beyond where you want the top of form position; then
make your final adjustment in the up direction. You can also use
the Top of Form Alignment Test (see “Top of Form Alignment” on
page 5-4) to print a line of characters to determine more
accurately where you have set the top of form position.
3. When the form is in the correct position, press Set Top of Form.
The alarm beeps and the printer displays
4. Advance the form by pressing Form Feed, and decide if the form
is on the desired line. If necessary, repeat Steps 1 through 4 of
this procedure until the first print line is correctly aligned.
TOP OF FORM SET
Chapter 1. Setting Up the 4230 Printer 1-47