IBM 2283 Hardware Maintenance Service page 91

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If the diagnostics program did not detect a failure,
but the system still displays a failure:
- If an error or other symptom appears, go to "In-
dex of Symptoms, Messages, Error Codes, or
Beeps" on page 40.
- If no error can be detected or the symptom is in-
termittent, go to "Undetermined Problems" on
page 77.
•
End.
Check Procedures 59