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03 LAN Error: EXTERNAL LOOPBACK
for HP Jetdirect 175x external print server/Internet connector for USB and HP Jetdirect 310x external print server/Internet connector for
USB
The print server is incorrectly connected to the network or is defective.
Make sure that your print server is correctly attached to your network. In addition, check all other cabling and connectors.
For help in correcting this error, please check your print server documentation (the welcome mat or the User's Guide on the Jetdirect