Instruction Manual

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D-620TBD-0-20 Rev A CONFIDENTIAL
Troubleshooting
9.3.3.2 Troubleshooting Expansion Hub LEDs During Normal Operation
• All of the Expansion Hub LINK and E-HUB/RAU LEDs that have RAUs connected
should be Green/Green, indicating that the RAU is powered on, communication is
established, and operation is normal.
• The
POWER, EHUB STATUS, DL STATUS, and UL STATUS LEDs should all be Green.
Table 9-3 Troubleshooting Expansion Hub Port LEDs During Normal
Operation
During
Normal
Operation
Expansion
Hub Port
LEDs State Action Impact
RAU is not
connected
PORT
Off If the RAU was disconnected acci-
dentally, re-connect the CATV
cable. The Expansion Hub’s port
LEDs should change to Green/Red
(then Green/Green, after 20 sec-
onds, if the Main Hub is connected,
powered on, and has band pro-
grammed).
Use AdminBrowser’s “Clear All
Disconnect Status” command if
you are permanently removing the
RAU from service. The Expansion
Hub’s port LEDs should change to
Off/Off.
The RAU was previously connected,
but it is not currently connected; the
RAU cable is disconnected.
RAU is
connected
PORT
Red Disconnect/reconnect the CATV
cable to force power-on reset to the
RAU. If the port LEDs remain Red
check for the exact cause of Expan-
sion Hub faults using Admin-
Browser.
Lost communications with the RAU.
The RAU could have powered down
due to over current; cable could have
been damaged.
PORT
Flashing
Red (60
ppm)
The RAU reports a fault condition;
check for the exact cause of Expan-
sion Hub and RAU faults using
AdminBrowser.
Depends on the fault condition.
PORT
Flashing
Red (60
ppm)
The Expansion Hub reports no con-
nection, cable shorts, or a current
port trap condition.
Expansion Hub communications with
the RAU. The Expansion Hub is at
fault. The cable cold have been dam-
aged. The cable leads may be shorted.