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
NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power System Check” on page 71):
1.
2.Visually check them for damage. If any problems are found, replace the FRU.
3.Remove or disconnect all of the following devices:
Printer, mouse, and other external devices
Battery pack
Hard disk drive
DIMM
PC Cards
4.
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
System board
LCD assembly
86 | Chapter 4 |
