1.Run the diagnostic test for the system board at least 10 times.
2.If no error is detected, do not replace any FRUs.
3.If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors.
Undetermined Problems
The diagnostic tests did 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 the procedures below to isolate the failing FRU.
Verify that the power supply being used at the time of the failure is operating correctly.
1.Power off the computer.
2.Check the cables, wires, and connectors for short circuits and open circuits. Visually check them for damage. If any problems are found, replace the FRU.
3.Remove or disconnect all of the following devices: v
vPrinter, external mouse & keyboard, and other external devices
vBattery pack
vHard disk drive
v
vPC Card (PCMCIA)
4.Power on the computer.
5.Determine if the problem has changed.
6.If the problem does not occur again, reconnect the removed devices one at a time until you find the failing FRU.
7.If the problem remains, replace the following FRUs one at a time. Do not replace a
vHard disk drive connection board
vLCD assembly
vSystem board
