HP Color LaserJet 9500 Printer series - Manual (Page 130)

http://www.hp.com/support/lj9500
128 Chapter 6 – Solving problems Rev. 1.0
8 To clear a booklet jam, turn the bottom green knob clockwise to remove the
booklet.
9 Close the stapler-unit door.
10 Push the output device back into place.
8
9
10