IBM XSERIES 255 TYPE 8685, Hardware Maintenance Manual And Troubleshooting Manual

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6. For safety information, see “Safety information” on page 167.
7. For intermittent problems, check the error log.
001
IS THE SYSTEM PART OF A CLUSTER?
YES. Schedule maintenance for the system. Shut down all systems related
to the cluster. Run the storage test.
NO. Go to step
002
.
002
IF THE SYSTEM IS NOT PART OF A CLUSTER:
1. Turn off the server and all external devices.
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 POST error messages that are displayed on the screen. If
an error is displayed, look up the first error in the “POST error codes”
on page 146.
7. Check the information LED panel System Error LED; if it is on, see
“Diagnostic panel system error LED” on page 130.
8. Check the System Error log. If an error was recorded by the system,
see Chapter 6, “Symptom-to-FRU index,” on page 127.
9. Start the diagnostic programs.
10. Check for the following responses:
v One beep.
v Readable instructions or the main menu.
003
DID YOU RECEIVE BOTH OF THE CORRECT RESPONSES?
NO. Find the failure symptom in Chapter 6, “Symptom-to-FRU index,” on
page 127.
YES. Run the diagnostic programs. If necessary, see “Diagnostic programs
and error messages” on page 28.
If you receive an error, see Chapter 6, “Symptom-to-FRU index,” on page
127.
If the diagnostic programs were completed successfully and you still
suspect a problem, see “Undetermined problems” on page 157.
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xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide