HP LaserJet 4345 Multifunction Printer series - Manual (Page 201)

3. Slowly pull the jammed media out of the MFP. Do not tear the media.
4. If jammed media is difficult to remove, open 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 tray 1.
7. Reinstall the print cartridge and close the top cover.
8. If a jam message persists, jammed media is still in the MFP. Look for the jam in another
location.
ENWW Clearing jams 187