HP Color LaserJet Enterprise Multifunction M680 Printer series - Manual (Page 151)

Clear jams in the document feeder
Use the following procedure to check for paper in all possible jam locations related to the document feeder.
When a jam occurs, the control panel displays an animation that assists in clearing the jam.
1. Lift the latch to release the document-feeder
cover.
2. Open the document-feeder cover.
3. Lift the jam-access door, and remove any
jammed paper.
If necessary, rotate the green wheel at the front
of the document feeder to remove jammed
paper.
ENWW Clear jams 139