Lexmark MS810n / MS810dn / MS810dtn
Make sure the size of the paper loaded in the tray matches the fuser type.
Note: Use a 110-volt fuser for printing on letter-size paper and a 220-volt fuser for printing on A4‑size paper.
Resend the print job.
Does the print speed increase?
The problem is solved.
Go to step 2.
Replace the fuser. For more information on installing the fuser, see the instruction sheet that came with the part.
Contact customer support.