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Chapter 3. Diagnostics
This section provides basic troubleshooting information to help you resolve some
common problems that might occur with your server.
If you cannot locate and correct the problem using the information in this section,
see Appendix A, "Getting help and technical assistance", on page 93 for more
information.
General checkout
The EFI platform diagnostic tests allow you to quickly assess the server's hardware
status, view test logs, and determine the server's current configuration. You can run
the diagnostic tests from within the EFI environment.
If you cannot determine whether a problem is caused by the hardware or by the
software, you can run the diagnostic tests to confirm that the hardware is working
properly.
When you run the diagnostic tests, a single problem might cause several error
messages. When this occurs, work to correct the cause of the first error message.
After the cause of the first error message is corrected, the other error messages
might not occur the next time you run the test.
Notes:
1. If multiple error codes are displayed, diagnose the first error code that is
2. If the server stops with a POST error, go to "Error codes - video display" on
3. If the server stops and no error is displayed, go to "Undetermined problems" on
4. For safety information, see "Safety information" on page 95.
5. For intermittent problems, check the test log. See "Viewing the test log" on
6. If device errors occur, see "Error symptoms" on page 86.
7. For power supply LED errors, see "Power supply LED errors" on page 87.
8. If the BIOS is corrupted, go to "BIOS recovery mode" on page 42
9. If you cannot find the problem in the error symptom charts, go to "EFI-based
© Copyright IBM Corp. 2002
displayed.
page 81.
page 88.
page 38
SELViewer task" on page 23 to test the server.
001
USE THE FOLLOWING PROCEDURE TO CHECKOUT THE SERVER.
1. Turn off the server and all external devices, if attached.
2. Check all cables and power cords.
3. Set all display controls to the middle position.
4. Turn on all external devices.
5. Turn on the server.
6. Record any beep codes that you hear prior to video initialization, see
"Beep codes" on page 79.
7. Record any POST error messages that are displayed on the screen. If
an error is displayed, look up the first error, see "Error codes - video
display" on page 81
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