HP Color LaserJet 4700 Printer series - Manual (Page 243)

Staple jams
NOTE Clear staple jams when the message 13.XX.X JAM IN STAPLER appears on the control
panel display.
1. On the left side of the stapler/stacker, open the stapler cartridge cover by gently pulling it.
2. Grasp the stapler cartridge handle and pull up gently.
ENWW Clearing jams 227