HP LaserJet M4345 Multifunction Printer series - Manual (Page 203)

3. Slowly pull the jammed media out of the device. Do not tear the media.
4. If jammed media is difficult to remove, open tray 1 and remove the envelope-entrance cover. If
media is present, remove it.
5. Rotate the paper-release guide to check for additional jammed media underneath. If jammed
media is present, remove it.
6. Replace the envelope-entrance cover and close tray1.
ENWW Clear jams 191