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Symptom-to-FRU Index
The Symptom-to-FRU Index lists error symptoms and
possible causes. The most likely cause is listed first.
Note: Replace the FRUs one at a time in the sequence
shown in the FRUs of the SelectaDock Sequence
of Actions column. If a replaced part did not
resolve the problem, put the original part back in
the SelectaDock Docking System. Do not replace
nondefective parts.
Always begin with “General Preparation” on page 624.
This index also can be used to help you to decide which
FRUs to be replaced when servicing the SelectaDock
Docking System.
Numeric error codes show the errors detected in the POST
or system operation. An X in the error code represents
any number.
FRU codes are used for errors detected by diagnostic
tests.
If no error codes are available, use narrative symptoms.
If the symptom is not listed or you cannot correct the
problem using this index, go to “Undetermined Problems”
on page 653.
IMPORTANT:
1. Before replacing any SCSI device, verify that there
are no duplicate SCSI ID settings.
2. Make sure that there are no conflicts of hardware
settings, such as interrupt level, memory address,
DMA channel, and I/O address.
3. If you have both an error message and an incorrect
audio response, diagnose the error message first.
4. If you cannot run the advanced diagnostic tests, but
did receive a POST error message, diagnose the
POST error message.
5. If you did not receive an error message, look for a
description of your error symptoms in the first part of
this index.
6. Check all power supply voltages before you replace
the main card, riser card, and audio card of the
SelectaDock Docking System. (See “Power Supply”
on page 626.)
640 IBM Mobile Systems HMM