HP 620n Fast Ethernet Print Server manual Port Select, On Autonegotiation is enabled, or

Note	The HP Jetdirect 10/100Base-TX print server may
	require up to 10 seconds to establish a connection
	on the network.

Try the following troubleshooting procedures:

Verify cabling connections.

Configure the print server’s 10/100TX link setting directly (for example, using the EIO menu on the printer’s control panel). Verify that the configuration of the connecting network device (such as a network switch) matches. For example, if you set the print server for 100Base-TX Full-Duplex operation, the port on the network switch must also be set to 100Base-TX Full-Duplex operation. Power-cycle the printer to reinitialize the setting.

On the Jetdirect Configuration Page, compare your configuration for the following parameters:

Parameter	Expected Messages for 10/100TX Cards
PORT SELECT:	RJ-45
PORT CONFIG:	100TX HALF, 100TX FULL, 10BASE-T HALF,
	10BASE-T FULL
AUTONEGOTIATION:	ON (Autonegotiation is enabled), or
	OFF (Autonegotiation is disabled, 10/100TX
	configuration has been manually set)

ENWW Troubleshooting Tools 23