MP 4054, Fusing problem, Print quality

[mikadonovan]

Are you using an aftermarket toner?

[Dan G]

We replaced the new fusing lamp with the old one, as they were different.
Keeping the new sleeve and so far everything works.
D895-4034 (Sleeve Unit) is for a different machine, looks the same, fits, but the lamp is different.

Thank you all for help. And a happy holiday season.

MP2554 is different than fuser in the faster units

[Oze]

Give this a shot.