The SURFboard family of cable modems provide indicator lights (LEDs) that provide useful information when troubleshooting connectivity issues. The following diagram shows the layout of the LEDs and what they indicate.
NOTE: The SB5102 does not support the Standby switch. Disregard any reference to this switch or the corresponding LED for this model.
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Special LED Status Indications
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Power and Online LEDs flashing together indicate that the cable modem cannot be provisioned on the cable network. Contact your cable operator to troubleshoot for a possible account or modem provisioning issue.
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A continuously flashing Online LED indicates that the cable modem cannot complete registration on the cable network. Contact your cable operator to troubleshoot for a possible account or modem provisioning issue.
