Undetermined problems
You are here because the diagnostic tests did not identify which adapter or device failed, incorrect devices are installed, a short circuit is suspected, or the system is inoperative. Follow these procedures to isolate the failing FRU.
Note: Do not replace any FRU if the procedures do not identify it as defective.
Verify that all attached devices are supported by the computer.
Check the power system; see “Power system checkout” on page 28.
1.Power off the computer.
2.Visually check each FRU for damage. Replace any damaged FRU.
3.Remove or disconnect all of the following devices:
a.
b.Devices attached to the port replicator
c.Printer, mouse, and other external devices
d.Battery pack
e.
f.External diskette drive
g.DIMM
h.CompactFlash card
i.PC Card
4.Power on the computer.
5.Determine whether the problem has been solved.
6.If the problem does not recur, reconnect the removed devices one at a time, and test the system after each reinstallation. Do this until you find the failing FRU.
7.If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):
a.System board
b.LCD assembly
