This device can only be reset by a Xerox technician, or someone who has the right software at the least. It involves connecting via laptop to the device and running a specialized software to do so. Since the machine is out of contract and out of developement, I'm not sure what you can do on that front.
It sounds like port 80 and 443 are blocked by something on the device. To check, try Telnetting to those 2 ports to see if either is active.
If 80 is active it would be http://192.168.1.101/properties/index.dhtml
If 443 it would be https://192.168.1.101/properties/index.dhtml
From your post history I see that the resets have been done, and PC/Network testing as well. To just eliminate the network from being a thing, hook a laptop up directly via crossover, just make sure the printer is set to a manual IP address (Static), connect the 2 devices with a crossover cable and set the laptop to
IP= 192.168.1.100
Subnet= 255.255.255.0
Gateway= 192.168.1.101
If the printer is not currently using a static IP, make it the following
IP= 192.168.1.101
Subnet= 255.255.255.0
Gateway= 192.168.1.101
If you can't get connected in this setup it is not an issue with Cables, or Routers/Modems etc etc.
There is the possibility that someone at the university changed the port the webui uses to a non-default in order to secure the device from being modified. You would then need to find open ports on it's IP and keep trying until you find one that will work.
There is also the possibility that it was setup to block all connections to the web interface with exception to a chosen one or few. If this is the case, I can think of nothing beyond having the device professionally reset to fix it, or guessing the correct IP they whitelisted.
Last ditch-effort, give an ancient Portable Firefox a shot at opening it in case it has a broken, shortened ssl certificate. (Think Firefox 2)