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Table 5. Light path diagnostics (continued)
Lit LED
Cause
Critical error
A critical system error has occurred, such as
nonredundancy on the power modules or a
system error in a blade.
Note: You can configure the critical error LED
to be either red or amber through the
management module.
Management module
System error
A critical error has occurred in the
management module.
Active
Primary management module.
Power module
System error
A critical error has occurred in the power
module.
Blower module
System error
The blower has failed or is operating too
slowly.
I/O module
System error
A critical error has occurred in the I/O
module.
Action
v Check the error log for messages.
v Look for an error LED on the modules and
blade servers to locate the component:
– If the error LED is on a module, follow
the instructions for the module in this
table.
– If the error LED is on a blade server, see
the documentation that comes with the
blade server.
v If your BladeCenter T unit has only one
management module:
1. Try reseating the management module.
2. Restart the management module.
If the problem remains, replace the
management module.
v If your BladeCenter T unit has two
management modules, the BladeCenter T
unit continues to function using the
redundant module. Replace the failed
management module.
If your BladeCenter T has two management
modules, the Active LED indicates which is
the primary management module.
Reseat the power module. If the problem
remains, replace the module. If your
BladeCenter T unit has a redundant module
for this power module, the BladeCenter T unit
continues to function using the redundant
module.
Reseat the blower module. If the problem
remains, replace the blower module as soon as
possible, to regain cooling redundancy. The
BladeCenter T unit continues to function. The
redundant blower module provides cooling to
the BladeCenter T unit and blade servers.
Reseat the I/O module. If the problem
remains, replace the module.
Chapter 6. Symptom-to-FRU index
93
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