Ericsson ECN330, User Manual

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Troubleshooting
1171
1553-KDU 137 365 Uen D 2006-06-16
9 Troubleshooting
9.1 Diagnosing ECN330 Indicators
Table 157 Troubleshooting Chart
Symptom Cause Action
PWR LED is
off DC power is
disconnected • Check if the DC power supply is connected to the
ECN330.
• Check connections between the ECN330, the
power cables, and the DC power circuit.
• Check the ECN330’s fuse condition. Replace the
fuse, if necessary.
PWR LED is
on red The unit’s internal
power supply is not
operating normally • Reboot the ECN330-switch to see if the condition
clears.
• If the condition persists, replace the unit.
DIAG LED is
on red The ECN330-
switch has detected
a fault • Power cycle the ECN330 to see if the condition is
cleared.
• If the condition persists, replace the unit.
FAN LED is
on red One or both cooling
fans have a fault, or
the ECN330 is
overheating • Check that there is enough free space around the
ECN330 to allow for adequate ventilation
• Replace the fan tray if required.
CTRL LED is
off ENC not present • Contact Ericsson.
CTRL LED is
on red Error in the ENC • Log in to the CLI, check if the ECN330 is in Fallback
state. Check the log file for errors. Check the
interfaces configuration.
• If the ECN330 is not in Fallback state, contact
Ericsson.