Owners Manual

Table 27. Event descriptions and recommended actions (continued)
Number Severity Description/Recommended actions
Recommended actions:
● If a voltage sensor has exceeded the normal operating range but is within safe operating
limits:
○ Check that all modules in the enclosure are fully seated in their slots and that their
latches are locked.
○ If this does not resolve the issue, the indicated FRU has probably failed and should be
replaced.
● If a voltage sensor has been removed:
○ Check that the indicated FRU is in the indicated enclosure.
○
If the FRU is not in the enclosure, install the FRU immediately.
○ If the FRU is in the enclosure, ensure that the FRU is fully seated in its slot and that its
latches are locked.
○ If these recommended actions do not resolve the issue, the indicated FRU has probably
failed and should be replaced.
When the problem is resolved, an event with the same code will be logged with Resolved
severity.
Resolved A SES alert for a voltage sensor in the indicated enclosure has been resolved.
Recommended actions:
● No action is required.
555 Error The local Expander Controller firmware has detected a level of incompatibility with the partner
Expander Controller firmware or hardware. As a preventive measure, the local Expander
Controller may disable all the PHYs.
Recommended actions:
● Check that both the Expander Controllers have the correct firmware revision.
● If both Expander Controllers have different firmware versions, upgrade the partner controller
module to the appropriate firmware that is compatible with the enclosure.
● If these recommended actions do not resolve the issue, replace the partner controller
module.
When the problem is resolved, an event with the same code will be logged with Resolved
severity.
Warning An expander in a controller module, expansion module, or drawer is mated but is not responding;
or, an expander in an expansion module has been removed.
Recommended actions:
● Check that the indicated FRU is in the indicated enclosure.
● If the FRU is not in the enclosure, install the appropriate FRU immediately.
● If the FRU is in the enclosure, ensure that the FRU is fully seated in its slot and that its
latches, if any, are locked.
● If these recommended actions do not resolve the issue, the indicated FRU has failed and
should be replaced.
When the problem is resolved, an event with the same code will be logged with Resolved
severity.
Resolved A SES alert for an expander in the indicated enclosure has been resolved.
Recommended actions:
● No action is required.
556 Error An alert condition was detected on a root expander or drawer expander element.
Recommended actions:
Events and event messages 135