IBM BladeCenter JS12, Problem Determination And Service Manual, Page: 210 / 318

Intermittent problems
Identify intermittent problem symptoms and corrective actions.
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, Type 7998,” on page 235 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 Action
A problem occurs only
occasionally and is difficult to
diagnose.
1. Make sure that:
v
When the blade server is turned on, air is flowing from the rear of the blade
server at the blower grill. If there is no airflow, the blower is not working.
This causes the blade server to overheat and shut down.
v
Ensure that the SCSI bus and devices are configured correctly.
2. Check the management-module event log for errors
Keyboard problems
Identify keyboard problem symptoms and what corrective actions to take.
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, Type 7998,” on page 235 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 Action
All or some keys on the
keyboard do not work.
1. Make sure that:
v
The keyboard/video select button LED on the front of the blade server is lit,
indicating that the blade server has ownership of the keyboard and video.
v
The keyboard cable is securely connected to the BladeCenter management
module.
v If you are using a PS/2 keyboard, the keyboard cable is connected to the
proper connector.
v
The blade server is using a supported Linux operating system that has
loaded completely and supports USB devices.
v The blade server and the monitor are turned on.
2.
Replace the keyboard.
3.
Replace the management module on the BladeCenter unit. See the online
information or the
Hardware Maintenance Manual and Troubleshooting Guide or
Problem Determination and Service Guide for your BladeCenter unit.
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JS12 Type 7998: Problem Determination and Service Guide