MF455dw knocking noise

[Vapor5]

So, from day-1 after getting my MF455dw, the printer makes a light knocking or banging noise when it prints. But oddly, this noise is the loudest after the the printer wakes up from a long sleep. But with continuous use the noise seems to wane away. It's not a very loud noise, more like you just tapping your knuckle on a desk.

Is this normal, is it a feature of some sort?

[Hector]

Hello,

That description does not seem to match the normal operating sounds the printer would make. You can try reseating the toner using the steps in the link HERE. If that does not resolve the issue, I would suggest contacting support over the phone at 1-800-652-2666. Our agents would be happy to help and can provide any service options if needed.