Undetermined Problem
You are here because the diagnostics tests did not identify
the failing FRU.
1. Power-off the computer and remove the battery packs
from the computer.
2. Remove or disconnect one of the following devices or
adapter (do not isolate FRUs that are known to be
good).
a. Non-IBM devices
b. Modem, printer, mouse, or other external device
c. IC DRAM card
d. Hard disk drive (fixed disk drive) or diskette drive
e. Any adapter and device.
3. Power-on the computer and start the system program.
4. If the symptom remains, repeat steps 2 and 3 until
you find the failing FRU or until all FRUs have been
removed.
5. If all of the FRUs listed have been removed and the
problem remains, replace the system board.
62 IBM Mobile Systems HMM - Volume 1
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