hp p2055dn printer stuck in initializing

So far the printer's now lasted a week before apparently going offline (this has been mentioned to us by one of our staff but would like to confirm it's happening after witnessing it ourselves!). We've tried disabling all of the network management protocols on the printer apart from SNMP and the '9100' print services protocol both of which appear to be required. So at the moment it's looking like it's some kind of randomly occuring traffic on our network that's causing the issue We plugged the printer into a standalone network switch with only it and another PC connected and couldnt replicate the fault. Hope this might help others as I was close to buying a new printer thinking this one bit the dust (after 8 years of use).Just to update this thread we've been running some more tests and it turns out it may not be enitirely HP's fault (though their tech support's about as much help as a chocolate teapot). Check the left side of the door to see what I'm talking about. So in conclusion for a possible solution, make sure the right side hinge is connected to the toner cartridge door. This hinge (when pulled) also recesses/disengages the plastic circular gear into the printer body so the toner can side in and out easily. It was easy to grab that hinged and put it back on the right side of the door. I looked closer and somehow that hinge got 'disconnected' and went back into the printer body. I checked the right side of the toner cartridge door and it didn't have that hinge connecting to it. I traced around and almost gave up before I found out that the left side of the toner cartridge door had a half moon plastic hinged that connected to it when open. I figured there must be some mechanism that tells it to recess when removing and installing a toner cartridge. I found that on the right side, there was a white plastic circular gear lever that 'pops' out to engage the circular gear on the toner cartridge and that doesn't recess when you pull down the toner cartridge door to put in the toner cartridge (or take it out). But when I tried to put the toner back, it wouldn't go back all the way on the right side. I was able to forcefully remove it to check for paper jam.

Seems to be stuck on the right side (even though left side moves about 1 ').

I had an hp 2420 and had identical issue removing a genuine toner cartridge.

Hp p2055dn printer stuck in initializing