HP LaserJet Enterprise 700 color MFP M775 series - Manual (Page 257)

Clear jams in the stapler/stacker
1. If paper is visible in the stapler/stacker output
bin, grasp the leading edge of the paper and
slowly pull the paper out of the product.
2. Open the stapler/stacker door.
3. If jammed paper is visible, grasp both sides of
the paper and slowly pull it out of the product.
ENWW Clear jams 243