HP LaserJet M3027 Multifunction Printer series - Manual (Page 181)

3. Before replacing the tray, make sure the paper is flat in the tray at all four corners and below the
tabs on the guides.
4. Open and close the front door, and then touch OK on the touchscreen to clear the jam message.
If a jam message persists, there is still media in the device. Look for media in other locations.
Clear jams from the print-cartridge area
1. Open the front door and remove the print cartridge.
CAUTION To prevent damage to the print cartridge, do not expose it to light for more than
a few minutes.
ENWW Clear jams 169