Solving undetermined problems
Use this information to diagnose and resolve undetermined issues with the blade
server.
Note:
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.
v
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.
v
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 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 178.
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 71. If you suspect that the UEFI code is damaged, see “Recovering from a
UEFI update failure” on page 212.
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 14 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.
v
I/O expansion card.
v
Storage drives.
v
Memory modules. The minimum configuration requirement is 1 GB (two 512
MB DIMMs on the system board).
The following minimum configuration is required for the blade server to start:
v
System board
v
One microprocessor
v
Two 512 MB DIMMs
v
A functioning BladeCenter unit
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BladeCenter HS22V Type 7871 and 1949: Problem Determination and Service Guide
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