[Info-vax] [OT] HP JetDirect question

[H Vlems]

This question is really off topic since it concerns a JetDirect 600N
card (J3113A) for an HP 2100 Laserjet.
Now this laserjet 2100 serves as a printer for my primary VMS system,
so there is a faint connection....
The 600N is a second hand unit and has an existing ip address on it
(172.28.155.241/24). If I telnet to that address on port 9100 then the
printer prints the text I typed in. So the interface is basically
correct.
However the web interface doesn't allow me to change the IP
attributes. The error message in the browser is "device not
connected". I suspect an SNMP or security attribute was set to prevent
ordinary users to modify its set up.
Is there a way to reset the card to factory default values?
Hans