IBM Aptiva 2142 - Manual (Page 114)

(continued)
4. If there are beeps, replace the system board and use the current
processor on the FRU system board.
5. If there are no beeps, replace the processor and use the current system
board.
6. If there are still no beeps, replace the current system board and use the
FRU processor removed in step 5.
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