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Notes: When you are diagnosing a problem in the blade server, you must determine whether the problem is
in the blade server or in the BladeCenter unit.
• If all of the blade servers have the same symptom, the problem is probably in the BladeCenter unit. For
more information, see the Hardware Maintenance Manual and Troubleshooting Guide or Problem
Determination and Service Guide for your BladeCenter unit.
• If the BladeCenter unit contains more than one blade server and only one of the blade servers has the
problem, troubleshoot the blade server that has the problem.
If the blade server fails to turn on, perform one of the following steps:
• If you have updated the IMM firmware, use the SW1-4 switch to set the blade server to start using the
backup IMM firmware (see "System-board switch" on page 8)
• Use the SW1-6 switch to allow the blade server to boot without permission from the AMM (see "System-
board switch" on page 8); then, update the IMM firmware using the latest Bootable Media Creator
(BoMC). The BoMC application is available at http://www.ibm.com/ support/entry/portal/docdisplay?
brand=5000008&lndocid=TOOL-BOMC. After you have updated the IMM firmware successfully, return
the SW1-6 switch to the off position.
If the diagnostic tests did not diagnose the failure or if the blade server is inoperative, use the information in
this section.
If you suspect that a software problem is causing failures (continuous or intermittent), see "Software
problems" on page 202.
Damaged data in CMOS memory or damaged UEFI code can cause undetermined problems. To reset the
CMOS data, remove and replace the battery to override the power-on password and clear the CMOS
memory; see "Removing the battery" on page 41. If you suspect that the UEFI code is damaged, see
"Recovering from a UEFI update failure" on page 254.
Check the LEDs on all the power supplies of the BladeCenter unit in which the blade server is installed. If the
LEDs indicate that the power supplies are working correctly and reseating the blade server does not correct
the problem, complete the following steps:
1. Make sure that the control panel connector is correctly seated on the system board (see "Blade server
connectors" on page 7 for the location of the connector).
2. If no LEDs on the control panel are working, replace the bezel assembly; then, try to turn on the blade
server from the Advanced Management Module (see the documentation for the BladeCenter unit and
Advanced Management Module for more information).
3. Turn off the blade server.
4. Remove the blade server from the BladeCenter unit and remove the cover.
5. Remove or disconnect the following devices, one at a time, until you find the failure. Reinstall, turn on,
and reconfigure the blade server each time.
• I/O expansion card.
• Storage drives.
• Memory modules. The minimum configuration requirement is 2 GB per microprocessor installed in
the server.
The following minimum configuration is required for the blade server to start:
• System board
• One microprocessor
• One 4 GB DIMM
• A functioning BladeCenter unit
6. Install and turn on the blade server. If the problem remains, suspect the following components in the
following order:
a. DIMM
.
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Chapter 5
Diagnostics
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