Troubleshooting Tables; Blade Server Problems - IBM BladeCenter HT 8740 Problem Determination And Service Manual

Troubleshooting tables

Use the troubleshooting tables to find solutions to problems that have identifiable
symptoms. If one or more LEDs on the BladeCenter HT unit or the components is
lit, see "Light path diagnostic LEDs" on page 113.
If you cannot find the problem in these tables, see "Solving undetermined problems"
on page 118.
If you have just added a new optional device and the BladeCenter HT unit is not
working, complete the following steps before using the troubleshooting tables:
1. Remove the device that you just added.
2. Restart the BladeCenter HT unit to determine whether the BladeCenter HT unit
3. Update the firmware for the optional device.
4. Reinstall the new device.

Blade server problems

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, "Parts listing," on page 23 to determine which components are CRUs and which
components are FRUs.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
A blade server power-on LED
flashes rapidly for an extended
amount of time.
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BladeCenter HT Type 8740 and 8750: Problem Determination and Service Guide
is working correctly.
Action
v Make sure that at least one management module is installed and it is active and
working.
v Make sure that the version of the management-module firmware is correct for
the blade server type and model.
v Use the management-module Web interface to check the event log.
v If the management-module event log indicates an SP comm or kernel mode
error, call for service.
v Use the management-module Web interface to make sure that local power
control is enabled for the blade server. See the Management Module User's
Guide for more information.
v Reseat the blade server.
v Make sure that the fault LEDs on the multiplexer expansion modules are not lit.
If a fault LED on a multiplexer expansion module is lit, reseat the module.
v Move the management module to the other management-module bay, or failover
to the second management module.
v Move the blade server to a known working bay in the BladeCenter HT unit or in
another BladeCenter HT unit.
v Replace the blade server.