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Intermittent Problems
Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a
hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement
should be considered only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1.
Run the advanced diagnostic test for the mainboard in loop mode at least 10 times.
•
If no error is detected, do not replace the FRU.
•
If any error is detected, replace the FRU.
2.
Rerun the test to verify that there are no more errors.
Chapter 4
79
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