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10.0 Symptom-to-FRU Index
The Symptom-to-FRU Index lists error symptoms and possible causes.
most likely cause is listed first.
in topic 1.0.
This index also can be used to help you decide which FRUs
to have available when servicing a system.
If you are unable to correct the problem using this index, go to
"Undetermined Problem" in topic 3.0.
IMPORTANT:
1.
If you have both an error message and an incorrect audio response,
diagnose the error message first.
2.
If you cannot run the advanced diagnostics tests, but did receive a
POST error message, diagnose the POST error message.
3.
If you did not receive an error message, look for a description of
your error symptoms in the first part of this index.
4.
Check all power supply voltages before you replace the system board.
(See "Power Supply" in topic 5.0.)
5.
If an error message is not listed, there is a device installed that
requires an additional diskette or service manual.
diskette or service manual for that device.
How to Read POST Error Messages
POST error messages are displayed on the screen as 3, 4, 5, or 8 digits.
The error messages that can be displayed as shorter POST messages are
highlighted in this Symptom-to-FRU Index.
The following example shows which digits display the shorter POST error
messages.
PICTURE 11
In the following index, an X in an error message can be any number.
Subtopics
10.1 No-Beep Symptoms
10.2 Beep Symptoms
10.3 Miscellaneous Symptoms
10.4 Numeric Error Codes
IBM PS/2 Model N51 SX HMS
Symptom-to-FRU Index
Always begin with "General Checkout"
Refer to the
¦ Copyright IBM Corp. 1991
10.0 - 1
The
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