IBM LS42 - BladeCenter - 7902, Руководство по обслуживанию

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Chapter 5. Diagnostics
This chapter describes the diagnostic tools that are available to help you solve
problems that might occur in the blade server.
Note: The blade server uses shared resources that are installed in the BladeCenter
unit. Problems with these shared resources might appear to be in the blade server
(see “Solving shared BladeCenter resource problems” on page 160 for information
about isolating problems with these resources). See the
Problem Determination and
Service Guide or the Hardware Maintenance Manual and Troubleshooting Guide for your
BladeCenter unit and other BladeCenter component documentation for diagnostic
procedures for shared BladeCenter components.
If you cannot diagnose and correct a problem by using the information in this
chapter, see “Getting help and technical assistance,” on page 167 for more
information.
Diagnostic tools
The following tools are available to help you diagnose and solve hardware-related
problems:
v POST beep codes, error messages, and error logs
The power-on self-test (POST) generates beep codes and messages to indicate
successful test completion or the detection of a problem. See “POST” for more
information.
v
Troubleshooting tables
These tables list problem symptoms and actions to correct the problems. See
“Troubleshooting tables” on page 89 for more information.
v
Light path diagnostics
Use the light path diagnostics to diagnose system errors quickly. See “Light path
diagnostics” on page 103 for more information.
v
Diagnostic programs, messages, and error codes
The diagnostic programs are the primary method of testing the major
components of the blade server. These programs are stored in read-only memory
(ROM) on the blade server. See “Dynamic System Analysis diagnostic programs
and messages” on page 108 for more information.
POST
When you turn on the blade server, it performs a series of tests to check the
operation of the blade server components and some optional devices in the blade
server. This series of tests is called the power-on self-test, or POST.
If a power-on password is set, you must type the password and press Enter, when
you are prompted, for POST to run.
If POST is completed without detecting any problems, a single beep sounds, and
the blade server startup is completed.
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