Troubleshooting Tips
MODEM PROBLEM
Wireless devices cannot send
or receive data (continued)
Front Panel LED Icons and Error Conditions
The SBG6782-AC front panel LED icons provide status information for the following error
conditions:
LED ICON
STATUS
OFF
FLASHING
FLASHING
FLASHING
OFF
OFF
OFF
SBG6782-AC Wireless Cable Modem & Router • User Guide
365-095-23865 x.1
To temporarily eliminate the Security Mode as a potential issue,
disable security.
After resolving your problem, be sure to re-enable wireless
security.
On the Wireless Access Control Page, make sure the MAC
address for each affected wireless client is correctly listed.
Table 6 – Front Panel LED Icons and Error Conditions
IF, DURING STARTUP:
Modem is not properly plugged
into the electrical outlet
Downstream receive channel
cannot be acquired
Upstream send channel cannot be
acquired
IP registration is unsuccessful
LED is disabled
LED is disabled
No connected device is detected
POSSIBLE SOLUTION
IF, DURING NORMAL
OPERATION
Modem is unplugged
Downstream channel is lost
Upstream channel is lost
IP registration is lost
LED is disabled
LED is disabled
Device is disconnected
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