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Troubleshooting • Front Panel Icons and Error Conditions
SB6121 DOCSIS 3.0® Cable Modem • Installation Guide 17
Uncontrolled Document
Front Panel Icons and Error Conditions
The SB6121 front panel icons provide status information for the following error
conditions:
Table 2 – Front Panel Icons and Error Conditions
ICON STATUS IF, DURING STARTUP:
IF, DURING NORMAL
OPERATION:
OFF SB6121 is not properly plugged
into the power outlet
SB6121 is unplugged or the
Energy Conservation switch is
OFF
FLASHING Downstream receive channel
cannot be acquired
Downstream channel is lost
FLASHING Upstream send channel cannot
be acquired
Upstream channel is lost
FLASHING IP registration is unsuccessful IP registration is lost
OFF No connected device is
detected
Device is disconnected
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