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

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3. Depending on your server model, these items might appear in a different
orientation on the light path diagnostics panel.
4. If an integrated system board VRM or memory board VRM has failed, run
diagnostics (“Starting the diagnostic programs” on page 29) and see Chapter 6,
“Symptom-to-FRU index,” on page 127.
5. See the documentation that comes with the system-management software for
more information on the ISMP and system-management adapter.
Remind button
You can use the Remind button to place the front panel system-error LED into the
Remind mode. By pressing the button, you acknowledge the failure but indicate that
you will not take immediate action. If a new failure occurs, the system-error LED will
turn on again.
In the Remind mode, the system-error LED flashes every 2 seconds. The
system-error LED remains in the Remind mode until one of the following situations
occurs:
v
All known problems are resolved
v
The system is restarted
v
A new problem occurs
You can use the Remind button to delay server maintenance until a later time. Also,
resetting the system-error LED enables the LED to react to another error. If the LED
is still on from the first error, it will not indicate additional errors. If you press the
Remind button (causing the LED to flash every 2 seconds) and another error
occurs, the LED will stop flashing and will instead be lit continuously to alert you to
the new error.
Light path diagnostics
The system-error LED on the operator information panel is lit when certain system
errors occur. If the system-error LED on your server is lit, you can determine the
cause of the error and the action you should take by checking the table at
“Diagnostic panel system error LED” on page 130.
Error symptoms
This section describes methods for troubleshooting other error symptoms.
Error symptom charts
You can use the error symptom charts to find solutions to problems that have
definite symptoms (see “Error symptoms” on page 138).
If you cannot find the problem in the error symptom charts, go to “Starting the
diagnostic programs” on page 29 to test the server.
Small computer system interface messages
If your receive a SCSI error message when running the SCSISelect Utility program,
see “SCSI error codes” on page 153.
Note: If your server does not have a hard disk drive, ignore any message that
indicates that the BIOS is not installed.
Chapter 3. Diagnostics
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