IBM BladeCenter JS12, Problem Determination And Service Manual

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7. Replace the monitor cable, if applicable.
8.
Replace the monitor.
9. Replace the management module.
See the online information center or the
Problem Determination and Service Guide
or the Hardware Maintenance Manual and Troubleshooting Guide for your
BladeCenter unit.
If these steps do not resolve the problem, it is likely a problem with the blade
server. See “Monitor or video problems” on page 198 for more information.
Solving undetermined problems
When you are diagnosing a problem in the JS12 Type 7998 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, it is probably a BladeCenter
unit problem; for more information, See the online information or 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.
Check the LEDs on all the power supplies of the BladeCenter unit where 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 “System-board connectors” on page 9 for the location of the
connector.
2. If no LEDs on the control panel are working, replace the bezel assembly; then,
try to power-on the blade server from the BladeCenter Web interface. See the
online information or the
BladeCenter Management Module User’s Guide 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 option.
v
Hard disk drives.
v
Memory modules. The minimum configuration requirement is 2 GB (two 1
GB DIMMs).
The following minimum configuration is required for the blade server to start:
v System-board and chassis assembly (with one microprocessor)
v
Two 1 GB DIMMs
v A functioning BladeCenter unit
Chapter 2. Diagnostics
231