132
Chapter 4
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.
Undetermined Problems
The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect,
whether a short circuit is suspected, or whether the system is inoperative.
Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU).
NOTE:
Verify that all attached devices are supported by the computer.
NOTE:
Verify that the power supply being used at the time of the failure is operating correctly. (See “Power On
Issue” on page 120.):
1.
Power-off the computer.
2.
Visually check them for damage. If any problems are found, replace the FRU.
3.
Remove or disconnect all of the following devices:
•
Non-eMachines devices
•
Printer, mouse, and other external devices
•
Battery pack
•
Hard disk drive
•
DIMM
•
CD-ROM/Diskette drive Module
•
PC Cards
4.
Power-on the computer.
5.
Determine if the problem has changed.
6.
If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7.
If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU:
•
System board
•
LCD assembly
Summary of Contents for eMachines E630 Series
Page 6: ...VI...
Page 10: ...X Table of Contents...
Page 14: ...4 Chapter 1 System Block Diagram...
Page 70: ...60 Chapter 3 4 Disconnect the following four cables from the Mainboard A B C D...
Page 83: ...Chapter 3 73 4 Using both hands lift the Thermal Module clear of the Mainboard...
Page 85: ...Chapter 3 75 4 Lift the CPU Fan clear of the Mainboard as shown...
Page 91: ...Chapter 3 81 5 Lift the LCD Panel clear of the module...
Page 99: ...Chapter 3 89 9 The Antennas and cables appear as shown when correctly installed...
Page 104: ...94 Chapter 3 2 Replace the four screws and screw caps provided...
Page 109: ...Chapter 3 99 5 Replace the FFC and press down as indicated to secure it to the Upper Cover...
Page 120: ...110 Chapter 3 17 Replace the two screws securing the LCD Module to the Lower Cover...
Page 128: ...118 Chapter 3...
Page 150: ...140 Chapter 4...
Page 156: ...146 Chapter 5...
Page 158: ...148 Chapter 6 E630 E430 Exploded Diagrams Main Assembly 1 2 3 4 5...
Page 171: ...Chapter 6 161...
Page 192: ...182 Appendix B...
Page 194: ...184 Appendix C...
Page 198: ...188...