Chapter 4
121
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 5230
Page 6: ...VI ...
Page 9: ...IX Table of Contents Online Support Information 163 Index 165 ...
Page 10: ...X Table of Contents ...
Page 13: ...Chapter 1 3 System Block Diagram ...
Page 46: ...36 Chapter 1 ...
Page 62: ...52 Chapter 2 ...
Page 108: ...98 Chapter 3 12 Detach any adhesive tapes and any cable that is glued to the LCD panel ...
Page 112: ...102 Chapter 3 9 Remove the Web camera from the back cover ...
Page 126: ...116 Chapter 4 F5h Boot to Mini DOS F6h Clear Huge Segment F7h Boot to Full DOS Code Beeps ...
Page 133: ...Chapter 5 123 Top and Bottom View Jumper and Connector Locations Chapter 5 ...
Page 134: ...124 Chapter 5 ...
Page 138: ...128 Chapter 6 TravelMate 5530 5230 Series Exploded Diagram ...
Page 168: ...Appendix A 158 ...
Page 172: ...162 Appendix B ...
Page 174: ...164 Appendix C ...