HP Jetdirect 250m Print Server series - Manual (Page 97)

Link lights OFF
Try the steps below and make any necessary corrections.
1. Make sure that the network cable is connected securely to the print server.
network cable
2. Check that the network cable is plugged securely into the hub/switch/router, and that the
connection is set to the correct network speed. (If your hub/switch/router is set to configure its
link speed automatically, try to configure it manually for 10 Mbps or 100 Mbps only. After
changing this setting, you may need to cycle power to the print server -- unplug the print server
and then plug it in again.)
3. Check that the LINK light is ON for the port on the hub/switch/router to which the print server is
connected.
4. Your network cable may be faulty. Try a different cable.
5. If the light still does not come on, try a different port on the hub/switch/router.
Did these steps turn ON one of the link lights?
If yes, click on the Yes button to continue the troubleshooting procedure.
If no, your print server has a problem that requires assistance from HP Jetdirect technical support; click
on the No button for a list of technical support telephone numbers.