IBM ThinkPad 340 Series Hardware Maintenance Manual page 151

Symptom-to-FRU Index
The Symptom-to-FRU Index contains tables that list
causes of symptoms. The most likely cause is listed first.
Use this index to help you decide which FRUs to have
available when servicing a computer.
Safety Notice 8: Translation on page 13
Before removing any FRU, power-off the computer,
unplug all power cords from electrical outlets, remove
the battery pack, then disconnect any interconnecting
cables.
Perform the FRU replacement or actions in the sequence
shown in the "FRU / Action" columns. If the replacement
FRU did not solve the problem, put the original FRU back
in the computer.
Notes:
1. Before replacing the top and bottom system boards,
try reseating the boards. If reseating the boards does
not correct the problem, replace the boards.
2. If possible, install the latest level of BIOS available
before replacing any FRU.
Before completely reassembling a computer that has been
repaired, try to reboot the computer to check the repairs
that have been completed. However, when you reboot
without the keyboard attached, the computer will display
error codes 8603, 8613, and 86XX.
Use displayed numeric error codes to determine the
system problem. If numeric error codes are not available,
use the other symptom tables that describe specific
symptoms. If the symptom is not listed, go to
"Undetermined Problems" on page 152.
Note:
For IBM devices not supported by diagnostics codes
of ThinkPad 701C/701CS, see the manual for those
devices.
ThinkPad 701C/701CS (2630)
141