Lexmark 4227-X00 - Manual (Page 95)

4-32 Service Manual
4227-X00
9. Slide the printer partway off the edge of the table. From the
bottom, remove the screw [3] holding the front of each side
frame to the base.
10.Lift the print unit from the base.
Reinstallation:
For ease of reassembly, remove the flexible signal cable from the
main logic board and connect it to the sub logic board before
reinstalling the print unit.