Lexmark 4227-X00 - Manual (Page 46)

Diagnostic Information 2-23
4227-X00
7 Operator Panel If paper does not move at all, verify the
FormFeed button is working correctly by
performing the service menu button test.
8 Main Logic Board If no other problem is found, replace the main
logic board.
Set the “Bidirectional Print Adjustment” on
page 4-4 , and “Printhead-to-Platen Gap
Adjustment” on page 4-2 .
FRU / Symptom Action