HP Color LaserJet CM4730 Multifunction Printer series - Manual (Page 265)

Clear staple jams
Occasionally, staples become jammed in the stapler/stacker. If jobs are not being stapled correctly or
are not being stapled at all, use this procedure to clear staple jams.
1. Turn off the MFP.
2. Press and hold the release button on the top of the stapler/stacker. Pull the stapler/stacker away
from the MFP.
3. Open the staple cartridge cover.
4. To remove the staple cartridge, pull up on the green handle and pull out the staple cartridge.
5. Lift up on the small lever at the back of the staple cartridge.
ENWW Jams 249