HP Color LaserJet CM4730 Multifunction Printer series - Manual (Page 261)

12. Close the covers on the right side of the printer.
13. If the jam has not cleared, open the drawer below tray 1 and remove any jammed paper.
14. Close the drawer.
15. If the jam still has not cleared, open the lower access door and remove any jammed paper.
16. Close the lower access door. If the jam has cleared, the print job will continue.
17. If the jam is still not cleared and you are printing from tray 1, see Clear jams in tray 2, 3, or 4 .
ENWW Jams 245