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
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 53.
Numeric error codes
46
MT 0656, 0657, 0658, 0659, 9455, 9456, 9457, 9458, 9459, 9460, 9461, 9462, 9463, 9464, 8942, 8943, 8944, 8945, and 8947
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.
Note
For a device not supported by diagnostic codes in the ThinkPad notebook
computers, see the manual for that device.
Symptom or error
0175
Bad CRC1, stop POST task—The EEPROM
checksum is not correct.
0176
System Security—The system has been
tampered with.
0177
Bad SVP data, stop POST task—The
checksum of the supervisor password in the
EEPROM is not correct.
0182
Bad CRC2. Enter BIOS Setup and load Setup
defaults.—The checksum of the CRS2 setting
in the EEPROM is not correct.
0185
Bad startup sequence settings. Enter BIOS
Setup and load Setup defaults.
0187
EAIA data access error—The access to
EEPROM is failed.
0188
Invalid RFID Serialization Information Area.
0189
Invalid RFID configuration information
area—The EEPROM checksum is not correct.
FRU or action, in sequence
System board.
1. Run BIOS Setup Utility, and save the
current setting by pressing F10.
2. System board.
System board.
1. Run BIOS Setup Utility. Press F9, and
Enter to load the default setting. Then
save the current setting by pressing F10.
2. System board.
1. Run BIOS Setup Utility. Press F9, and
Enter to load the default setting. Then
save the current setting by pressing F10.
System board.
System board.
System board.