HP LaserJet P2055dn "Jam"

It isn't of course. I pulled out the fuser assembly and rebuilt it, and put it back into the machine. After finally getting the pesky linkage gear lined up, I completed the process and turned it on. I fully expected for it to fire up, but instead it gave the following error: "Jam in output bin" followed by "Open door and clear jam"
I have seen other documented issues of this, but I have yet to find a solution. What I do know it is the following : There is no paper in the device, and I have...

HP LaserJet P2055dn "Jam"