Procedure 4: Resolving Printer Communication Problems With The Network - HP Jetdirect J7974E Administrator's Manual

A break in communications may result from the physical network connection being disrupted or the
server going down. If your printer has an Auto Continue feature that is disabled or off, you must
press the appropriate key (Start or Pause/Resume, for example) on the printer after the
communications problem is solved to put the printer back online. Turning the Auto Continue feature
on forces the printer to reconnect without user intervention. However, this does not solve the
disconnect problem.
4. Does an initializing (INIT) message appear on the display?
This is a normal message. Wait about 3 minutes for the message to clear, or another message to
appear. If another message appears, see the printer's documentation and configuration pages for
additional information.
5. Does a message other than READY or the messages listed in this section appear on the display?
See your printer documentation for a complete list of control panel messages and corrective
actions.
Procedure 4: Resolving Printer Communication Problems with the
Network
Check the following items to verify that the printer is communicating with the network. This information
assumes you have already printed a Jetdirect configuration page.
1. Are there any physical connection problems between the workstation or file server and the HP
Jetdirect print server?
Verify network cabling, connections, and router configurations. Verify that network cable lengths
meet network specifications.
2. Are your network cables connected properly?
Make sure that the printer is attached to the network using the appropriate HP Jetdirect print server
port and cable. Check each cable connection to make sure it is secure and in the right place. If the
problem continues, try a different cable or network port on the hub or switch.
3. For 10/100/1000Base-T print servers, is auto-negotiation properly configured? For applicable
Jetdirect print servers, auto-negotiation may be configured through the Jetdirect menu using the
printer's control panel. Auto-negotiation is the factory default setting.
For proper operation, the link speed and communication mode on the print server must match the
network.
Depending on the print server and printer/MFP device, indicator lights may be provided to identify
the link speed being used. If LEDs are used, verify that either the 10 Mbps, 100 Mbps, or 1000
Mbps link speed light is on. If all link indicators are off, then a proper link has not been established.
The configuration page also contains the port configuration and auto-negotiation settings on the
print server. Print and view the configuration page to verify proper settings.
4. Is the print server connected to an 802.1X network and properly configured for EAP/802.1X
operation?
The network must support the Extensible Authentication Protocol (EAP) method configured for use
on the print server.
Verify the configuration of the network's 802.1X port. If it does not allow guest or temporary access,
you may need to preconfigure the Jetdirect print server for 802.1X operation before connection to
ENWW General Troubleshooting 115