The ADF uses a mechanical clutch to engage the rollers. If this clutch fails, the rollers won't turn. You will hear a motor noise, but the paper won't move, causing an instant jam error.
: Lift the ADF input tray to check for and remove any paper in the output bin area. h30434.www3.hp.com 2. Clean the Rollers and Separator Pad hp color laserjet pro mfp m177fw document feeder jam
If paper is visible in the feeder, grasp it with both hands and pull it out slowly to avoid tearing. The ADF uses a mechanical clutch to engage the rollers