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Light path diagnostics LEDs
The system-error LED on the system LED panel is lit when certain system errors
occur. If the system-error LED on your BladeCenter unit is lit, use the following
table to help determine the cause of the error and the action you should take.
Table 3. Light path diagnostics
Lit LED Cause Action
BladeCenter system LED panel
Location A condition has occurred in the BladeCenter
unit that has caused the remote system
management to identify the BladeCenter unit
as needing attention.
Look for any information or error LEDs on the
system LED panels, the modules, and the
blade servers in this BladeCenter unit, and
follow the instructions in this table for those
LEDs.
Over-temperature The system temperature has exceeded a
threshold level.
v Determine whether a blower module has
failed. If it has, replace the blower module
as soon as possible, to regain redundancy.
v Make sure that the room temperature is not
too high. (See “Features and specifications”
on page 6 for temperature information.)
v Determine whether a blade server has a
temperature LED lit. If it does, see the
documentation that comes with the blade
server.
v Make sure that there is a blade server,
module, or filler installed in each bay.
If the problem remains, call for service.
Information A noncritical event has occurred that should be
looked at, such as the wrong I/O module
inserted in a bay, or power needs that exceed
the capacity of power modules currently
installed.
Check the error log for the messages. Check
the LEDs on the BladeCenter unit and the
blade servers to isolate the component.
System error A critical system error has occurred, such as
nonredundancy on the power modules or a
system error in a blade.
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.
Management module
System error A critical error has occurred in the
management module.
v If your BladeCenter 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 unit has two
management modules, the BladeCenter unit
continues to function using the redundant
module. Replace the failed management
module.
Chapter 6. Solving problems 57