IBM T21, T22 manual Symptom-to-FRU index, Numeric error codes

Symptom-to-FRU index

Symptom-to-FRU index

The symptom-to-FRU index in this section 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 nondefective 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 55.

Note

For an IBM device 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	System board.
Bad CRC1, stop POST
task—The EEPROM checksum
is not correct.
0187	System board.
EAIA data access error—The
access to EEPROM is failed.
0188	System board.
Invalid RFID serialization
information area or bad
CRC2—The EEPROM
checksum is not correct.
0189	System board.
Invalid RFID configuration
information area—The
EEPROM checksum is not
correct.
0190	1. Charge the battery pack.
Critical low-battery error	2. Battery pack.

ThinkPad T20, T21, T22 and T23 series 49