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

Look for any information or error LEDs on the

 

unit that has caused the remote system

system LED panels, the modules, and the

 

management to identify the BladeCenter unit

blade servers in this BladeCenter unit, and

 

as needing attention.

follow the instructions in this table for those

 

 

LEDs.

 

 

 

Over-temperature

The system temperature has exceeded a

v Determine whether a blower module has

 

threshold level.

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

Check the error log for the messages. Check

 

looked at, such as the wrong I/O module

the LEDs on the BladeCenter unit and the

 

inserted in a bay, or power needs that exceed

blade servers to isolate the component.

 

the capacity of power modules currently

 

 

installed.

 

 

 

 

System error

A critical system error has occurred, such as

v Check the error log for messages.

 

nonredundancy on the power modules or a

v Look for an error LED on the modules and

 

system error in a blade.

 

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

v If your BladeCenter unit has only one

 

management module.

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

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IBM 8677 manual Light path diagnostics LEDs, Lit LED Cause Action BladeCenter system LED panel