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Chapter 4
95
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 shown by the FRU code. Rerun
the test to verify that no more errors exist.
720.book Page 95 Saturday, March 6, 1999 10:00 AM
Summary of Contents for 721TX - TravelMate - PII 333 MHz
Page 8: ...VIII Table of Contents 720 book Page VIII Saturday March 6 1999 10 00 AM ...
Page 62: ...54 System Utilities 720 book Page 54 Saturday March 6 1999 10 00 AM ...
Page 110: ...102 Troubleshooting 720 book Page 102 Saturday March 6 1999 10 00 AM ...
Page 128: ...120 FRU Field Replaceable Unit List 720 book Page 120 Saturday March 6 1999 10 00 AM ...
Page 130: ...122 Model Definition and Configuration 720 book Page 122 Saturday March 6 1999 10 00 AM ...
Page 136: ...128 Online Support Information 720 book Page 128 Saturday March 6 1999 10 00 AM ...
Page 142: ...134 Index 720 book Page 134 Saturday March 6 1999 10 00 AM ...