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Symptom-to-FRU index
The symptom-to-FRU index lists symptoms and errors and
their possible causes. The most likely cause is listed first,
in boldface type.
Note: Do the FRU replacement or other actions in the
sequence shown in the column headed ″FRU or
action, in Sequence″. If replacing a FRU does not
solve the problem, put the original part back in the
computer. Do not replace a non-defective FRU.
This index can also help you determine, during regular
servicing, what FRUs are likely to need to be replaced
next.
A numeric error is displayed for each error detected in
POST or system operation. In the displays, n can be any
number.
If no numeric code is displayed, check the narrative
descriptions of symptoms. If the symptom is not described
there, go to “Intermittent problems” on page 52.
Note: For an IBM devices not supported by diagnostic
codes in the ThinkPad notebook computers, see the
manual for that device.
Numeric error codes
Symptom or error FRU or action, in sequence
0175
Bad CRC1, stop POST task.
The EEPROM checksum is not
correct.
1. System board.
0187
EAIA data access error
1. System board.
0190
Critical low battery error.
1. Critical low battery error.
Charge the battery pack.
2. Battery pack.
0193
RF antenna has been removed.
1. Enter the supervisor
password.
0194The computer has been
carried through a security gate.
1. Enter the supervisor
password.
48 ThinkPad X20, X21, X22, X23, X24