Problems HP Enterprise M806dn

[i-have-fax-problems]

This printer makes two problems:

-prints very slow (there was a LJ 9040 at this place before which had been working fine for years) (same Patch Cable same IP and network configuration as before).
-the following error code appears at many mornings after switching on the printer (after a restart later it works)
50.22.14

Thank you

[Lance15]

Prints very slow - make sure the paper tray(s) are set correctly for the paper loaded. Make sure the manual feeder is turned off in the menu. Make sure the computer driver is set for the correct paper size and type.

50 codes are fuser errors. Possibly a faulty fuser?