Lexmark 4I3 - Manual (Page 45)

6. To be sure that you have installed the forms device correctly,
look at the following figure and compare it to your printer. Check
both the left and right sides. Are the clips around the platen rod
as shown? If so, you installed the forms device correctly. If not,
repeat Steps 3 through 5.
P la te n R o d
P la te n R o d
C lip C lip
Chapter 1. Setting Up the 4230 Printer 1-23