Dell PowerEdge M520 Owner's Manual page 120

Error Code Message Information
Details
Action
SEL1502
Message
Details
Action
SEL1504
Message
Details
Action
SEL1506
Message
Details
Action
SEL1508
Message
Details
Action
SEL1510
Message
Details
Action
SEL9900
Message
Details
Action
120
An action or failure has taken place that breaks CMC redundancy.
Check the CMC network cables and network connections. Check that
CMC firmware versions match.
Chassis management controller (CMC) redundancy is degraded.
An action or failure has taken place that breaks CMC redundancy.
Check the CMC network cables and network connections. Check that
CMC firmware versions match.
The chassis management controller (CMC) is not redundant.
Insufficient resources to maintain normal operations.
There is not enough available power for two CMC's to operate.
Check the overall power consumption and power status.
Lost communications with Chassis Group Member <
The primary CMC has lost communication with the indicated member
CMC.
Check the network cable and network connections.
number > could not join the Chassis Group.
Member <
The indicated member CMC is a leader of a different CMC stacking
group.
Check if member CMC is a leader of a different chassis group.
An authentication error detected for Chassis Group Member
number >.
<
Group master CMC could not log into the group member CMC.
Check the login credentials of CMC.
An unsupported event occurred.
The current software version cannot decode this event. You may
need to review this event using a tool which displays raw data such
as Ipmitool with the -vvv option or Racadm with the -E option.
Upgrade the management software.
number >.