Chapter 4
89
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 system board in loop mode at least 10 times.
2.
If no error is detected, do not replace any FRU.
3.
If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors.
Summary of Contents for TravelMate 220 series
Page 6: ...VI ...
Page 51: ...42 Chapter 2 ...
Page 105: ...96 Chapter 5 ...
Page 107: ...98 Chapter 6 Exploded Diagram ...
Page 117: ...108 Chapter 6 ...
Page 119: ...110 Appendix A ...
Page 123: ...114 Appendix C ...
Page 127: ...118 Index ...