IBM ThinkPad 340 Series Hardware Maintenance Manual page 226

Symptom-to-FRU Index
The Symptom-to-FRU Index lists the symptoms and errors
and the possible causes. The most likely cause is listed
first.
Note: Perform the FRU replacement or actions in the
sequence shown in the "FRU/Action" columns. If a FRU
did not solve the problem, put the original part back in the
computer.
This index can also be used to help you decide which
FRUs to have available when servicing a computer.
Numeric error codes show the errors detected in POST or
system operation. In the following error codes, X can be
any number.
If no codes are available, use narrative symptoms.
If the symptom is not listed, go to "Undetermined
Problems" on page 227.
Notes:
For IBM devices not supported by the diagnostic
codes in this manual, see the manual for that
device.
If the LCD is replaced with a new one, see
"Digitizer Adjustment" on page 205 to adjust the
pen-point pressure.
216
IBM Mobile Systems HMM