HP2420 with onboard Jetdirect doesn't know the Jetdirect exists.
Sometime during the night a 2420 had printed out a Jetdirect diagnostic page (usual "Jetdirect has reset") and now doesn't know it has a Jetdirect onboard.
Printing out a configuration page, there's nothing on there for the Jetdirect.
There's nothing in the config menu for the Jetdirect - it can't be configured.
The network port does get a link light, but no traffic is seen (light on port or switchport statistics)
Resetting to factory on boot
# Haven't tried yet
Reloading the firmware via parallel cable.
Any other ideas? I suspect it's dead Jim, but the printer's otherwise OK so I'd like to resurrect it if I can.