Scientific Atlanta DPX2203, EPX2203 User Manual page 29

How Do I Troubleshoot My Internet Service Installation?
My cable modem does not register a cable connection
The cable modem works with a standard, 75-ohm, RF coaxial cable. If you are
using a different cable, your cable modem will not function properly. Contact
your service provider to determine if you are using the correct cable.
You may need to renew the IP address on your PC. Refer to How Do I Renew the
IP Address on My PC? (on page 30), for instructions on how to renew the IP
address for your particular operating system.
Your USB interface may be malfunctioning. Refer to the troubleshooting
information in your USB documentation.
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