IBM 86655RY Hardware Maintenance Manual - Page 21

Diagnostics, Diagnostic tools overview

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Diagnostics Diagnostic tools overview 11 POST 12 POST beep codes 12 POST error messages 12 Event/error logs 12 Small computer system interface messages . . . . . 12 Solving ServeRAID problems 13 ServeRAID controller messages 13 Rebuilding a defunct drive 22 Recovering from an incomplete format of a physical drive 23 Recovering from a failure in a failover-environment 24 Replacing a non-hot-plug controller in a failover pair 24 Diagnostic programs and error messages 24 Text messages 25 Starting the diagnostic programs 25 Viewing the test log 26 Diagnostic error message tables 27 Light path diagnostics 27 Power supply LEDs 27 Power checkout 31 Temperature checkout 31 Recovering BIOS 32 Replacing the battery 32 Diagnosing errors 34 Troubleshooting the Ethernet controller 34 Ethernet controller messages 36 This section provides basic troubleshooting information to help you resolve some common problems that might occur with the server. If you cannot locate and correct the problem using the information in this section, refer to "Chapter . Symptom-to-FRU index," on page 215 for more information. Diagnostic tools overview The following tools are available to help you identify and resolve hardware-related problems: • 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" on page 12 for more information. • Diagnostic programs and error messages The server diagnostic programs are stored in upgradable read-only memory (ROM) on the system board. These programs are the primary method of testing the major components of the server. See "Diagnostic programs and error messages" on page 24 for more information. • Light path diagnostics Your server has light-emitting diodes (LEDs) to help you identify problems with server components. These LEDs are part of the light-path diagnostics that are built into the server. By following the path of lights, you can quickly identify the type of system error that occurred. See "Light path diagnostics" on page 27 for more information. • Error symptoms These charts list problem symptoms, along with suggested steps to correct the problems. See the "Diagnosing errors" on page 34 for more information. © Copyright IBM Corp. 1999, 2000 11

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© Copyright IBM Corp.
1999, 2000
11
Diagnostics
Diagnostic tools overview . . . . . . . . . . . . . . . . . . . . 11
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
POST beep codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
POST error messages . . . . . . . . . . . . . . . . . . . . . . . . 12
Event/error logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Small computer system interface messages . . . . . 12
Solving ServeRAID problems . . . . . . . . . . . . . . . . . 13
ServeRAID controller messages . . . . . . . . . . . . . . . 13
Rebuilding a defunct drive . . . . . . . . . . . . . . . . . . . 22
Recovering from an incomplete format of a physical
drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Recovering from a failure in a failover-environment
24
Replacing a non-hot-plug controller in a failover
pair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Diagnostic programs and error messages. . . . . . . 24
Text messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Starting the diagnostic programs. . . . . . . . . . . . . . 25
Viewing the test log . . . . . . . . . . . . . . . . . . . . . . . . . 26
Diagnostic error message tables. . . . . . . . . . . . . . . 27
Light path diagnostics . . . . . . . . . . . . . . . . . . . . . . . 27
Power supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 27
Power checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Temperature checkout . . . . . . . . . . . . . . . . . . . . . . . 31
Recovering BIOS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Replacing the battery . . . . . . . . . . . . . . . . . . . . . . . . 32
Diagnosing errors . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Troubleshooting the Ethernet controller . . . . . . . . 34
Ethernet controller messages . . . . . . . . . . . . . . . . . 36
This section provides basic troubleshooting information to help you resolve some
common problems that might occur with the server.
If you cannot locate and correct the problem using the information in this section,
refer to
“
Chapter . Symptom-to-FRU index,
”
on page 215 for more information.
Diagnostic tools overview
The following tools are available to help you identify and resolve hardware-related
problems:
•
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
”
on page 12
for more information.
•
Diagnostic programs and error messages
The server diagnostic programs are stored in upgradable read-only memory
(ROM) on the system board.
These programs are the primary method of testing
the major components of the server.
See
“
Diagnostic programs and error
messages
”
on page 24 for more information.
•
Light path diagnostics
Your server has light-emitting diodes (LEDs) to help you identify problems with
server components.
These LEDs are part of the light-path diagnostics that are
built into the server.
By following the
path of lights
, you can quickly identify the
type of system error that occurred.
See
“
Light path diagnostics
”
on page 27 for
more information.
•
Error symptoms
These charts list problem symptoms, along with suggested steps to correct the
problems.
See the
“
Diagnosing errors
”
on page 34 for more information.