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The symptom-to-FRU index lists 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 FRU to be replaced when servicing a computer.
Numeric error codes show the errors detected in POST or system operation.
In the following error codes, n can be any number.
If no codes are available, use narrative symptoms.
If the symptom is not listed, go to 'Intermittent problems'.
Note: For IBM devices not supported by diagnostic codes in the ThinkPad
notebook computers, see the manual for that device.
Please see the LEGAL - Trademark notice.
Feel free - send a 
for any BUG on this page found - Thank you.