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CHAPTER 4: Troubleshooting
114
Intermittent problems
Intermittent system hang problems can be caused by a variety of reasons that
have nothing to do with a hardware defect. These reasons include: cosmic
radiation, electrostatic discharge, or software errors. FRU replacement should be
considered only when a recurring problem exists.
To analyze an intermittent problem:
1 Run the advanced diagnostic test for the system board in loop mode at least
ten times.
• If any error is detected, replace the FRU.
• If no error is detected, do not replace any FRU.
2 Rerun the test to verify that there are no more errors.