Lenovo ThinkCentre 8289 Hardware Replacement Manual page 22

14
Hardware Replacement Guide
3. Release the lever 1 holding the microprocessor heat sink.
4. Remove the heat sink from the system board.
Important
Do not use the old heat sink with the a new microprocessor. If you use
the old heat sink with the new microprocessor, your computer might
overheat causing intermittent problems.
5. Release the lever 1 for the microprocessor retainer 2 securing the
microprocessor 3 and pivot the retainer upward until it is fully open.
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