HP LaserJet Pro 4001dw Monochrome Wireless Printer - Manual (Page 92)

10. Remove any jammed paper.
11. Install the toner cartridge.
12. Close the front door.
13. If the error persists, ensure the type and quality of the paper being used meets the HP
specifications for the printer.
14. If the error persists, clean the tray 3 pickup and feed rollers.
13.04 jam error tray 3 83