Symptom-to-FRU Index
Symptom-to-FRU Index
The symptom-to-FRU index lists the symptoms and errors
and their possible causes. The most likely cause is listed
first.
Note: Perform the FRU replacement or actions in the
sequence shown in the “FRU/Action in Sequence”
column. If a FRU replacement did not solve the
problem, put the original part back in the computer.
Do not replace a nondefective FRU.
This index can also help you determine the next possible
FRUs to be replaced 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 64.
Note: For IBM devices not supported by diagnostic
codes in the ThinkPad notebook computers,
see the manual for that device.
Numeric Error Codes
Symptom / Error FRU / Action in Sequence
10X
101: Interrupt failure.
102: Timer failure.
103: Timer interrupt
failure.
104: Protected mode
failure.
105: Last 8042
command not
accepted.
107: NMI test failure.
108: Timer bus test
failure.
109: Low meg-chip
select test.
1. System board
110
(Planar parity.) 1. Go to “Memory
Checkout” on
page 33.
2. DIMM card
3. Detach the expansion
unit if it is attached to
the computer.
4. System board
52