IBM 866251Y - Netfinity 5500 M20, Hardware Maintenance Manual

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Notes
1. For systems that are part of a shared DASD
cluster, run one test at a time in looped mode.
Do not run all tests in looped mode, as this could
enable the DASD diagnostic tests.
2. If multiple error codes are displayed, diagnose
the first error code displayed.
3. If the computer hangs with a POST error, go to
the “Symptom-to-FRU index” on page 285.
4. If the computer hangs and no error is displayed,
go to “Undetermined problems” on page 325.
5. Power Supply problems, see “Symptom-to-FRU
index” on page 285.
6. Safety information, see “Safety information” on
page 340.
7. For intermittent problems, check the error log;
see, “Error logs” on page 31.
001
IS THE SYSTEM PART OF A CLUSTER?
Yes No
002
Go to Step 004.
003
Schedule maintenance with the customer. Shut down all
systems related to the cluster. Run storage test.
004
– Power-off the computer and all external devices.
– Check all cables and power cords.
– Set all display controls to the middle position.
– Power-on all external devices.
– Power-on the computer.
– Record any POST error messages displayed on the
screen. If an error is displayed, look up the first error in
the “Symptom-to-FRU index” on page 285.
– Check the information LED panel System Error LED; if
on, see “Information panel system error LED” on
page 290.
– Check the System Error Log. If an error was recorded
by the system, see “Symptom-to-FRU index” on
page 285.
– Start the Diagnostic Programs. See “Running diagnostic
programs” on page 14.
– Check for the following responses:
1. One beep.
(Step 004 continues)
Netfinity 5500 M20 - Type 8662
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