Printer says it is jammed when it isn't. it also says it is out of paper when the tray has plenty of paper. It also falls of the network for no apparent reason.
I'm not sure where to start. The only other insight is that I am told that users think the problem started after a roller was replaced. (I don't know which one or by whom)
Any insight is appreciated. I have worked on HP printers before but am a novice at this point looking for more experience. Hoping not to just throw parts at it but pinpoint the issue first.