Win2k Network, HP Printer issue

We have an HP 2200 Network printer that has developed a problem I think may be related to being on a Win2K network. The printer, every 15 minutes, prints out a page showing the date, time, name: Job Status Notification, Subject: Operator Attention. This happens all day and night. The printer is attached to an external HP Print server which we have updated the firmware on but to no avail. I am not sure what is triggering the message, the printer, the print server or the Win2K server or how to turn it off. Any suggestions?