Xerox DocuPrint C55 Supplementary Manual page 189

5. If you suspect that the cause of the communications problem is
the DocuPrint printer, print out a Print Settings page at the
printer's Control Panel and view the TCP/IP parameters.
6. If Dynamic IP Addressing is enabled (DEFAULT) try "hard
coding" the DocuPrint printer IP address at the control panel.
Reset the printer, and check for connectivity again with the
"ping" command.
7. If Dynamic IP Addressing is disabled, verify the following
settings on the Print Settings page with your local TCP/IP
address administrator. This person should be able to verify the
correctness of:
IP address
Subnet Mask
Default Gateway
Any one of these important TCP/IP parameters (if set incorrectly)
can cause TCP/IP communication problems. Subnet Mask and
Default Gateway are critical on multi-network segment
LAN/WAN's. If you make any TCP/IP configuration changes,
then the DocuPrint printer must be reset for those changes to take
effect.
8. If all of the above troubleshooting fails, you may have a
malfunctioning NIC. Try a Factory Reset at the DocuPrint
printer Control Panel. Manually set the IP address, Subnet mask,
and Default Gateway at the DocuPrint printer Control Panel.
Reset the printer. Try to ping the printer again. If the problem
persists, call Xerox Technical Support for further instructions.
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