IBM 8183 - ThinkCentre S50 User Manual page 51

4. Remove the air baffle from the microprocessor heat sink 1 .
5. Completely loosen the screw in each of the two clamps 2 that secure the
microprocessor heat sink.
6. Carefully twist the heat sink to break the grease seal to the microprocessor, then
remove the heat sink.
Attention: If your computer has been turned off for a long period of time the
thermal grease between the microprocessor heat sink and the microprocessor
might not allow them to be separated easily. In this case, turn on your
computer for a few minutes and allow the heat from the microprocessor to
soften the grease.
7. Take notice of the orientation of the beveled corner on the microprocessor 2 .
This is important when reinstalling the microprocessor on the system board.
8. Remove the microprocessor from the system board by lifting the small handle
1 on the microprocessor.
v If you are installing a new system board assembly, return to the system
board procedure.
v If you are replacing only the microprocessor, continue to "Replacing the
microprocessor" on page 38.
Appendix A. Replacing customer replaceable units (CRU)
37