The printer is connected to my Vista 32bit Intel PC via USB cable. It was working for both local Windows printing and for LPD printing (I have a server on the network that requires LPD service), but I uninstalled and reinstalled the print driver, now it only works as a local Windows printer.
UNIX print services are installed. I tested from the server and can connect to my PC port 515, indicating that there is no firewall issue and the service is running. But when I print from my server application my PC is rejecting the print job.
From my notes, I seem to recall this being useful:
I think I need to setup a "port", but can't remember how to implement this.