HP 4000N Printer

I have a client that has a HP 4000N printer that I connected to the network, after a couple of days I noticed it was no longer available. Apparently the jetdirect card toggled itself from having an active RJ-45 port and a disabled BNC port to an disabled RJ-45 and an active BNC port. I dont have error codes and I am looking to see if anyone has seen this issue before. thx