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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. Do not replace a nondefective FRU.
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 209.
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
161
(Dead battery.)
1. Go to “Checking the
Backup Battery” on
page 195.
2. Backup battery
3. System board
163
(Time and Date was not
set.)
1. Set time and date.
2. System board
ThinkPad 380, 380D, 385, 385D (2635) 199