Lenovo 30A0 Hardware Maintenance Manual page 220

9. Remove the eight screws that secure the system board by following the sequence shown in the
following illustration.
Figure 190. Removing the eight screws that secure the system board
10. Slide the system board to the front of the computer and then carefully lift the system board out of
the chassis.
11. Remove the microprocessor from the failing system board and install it on the new system board. See
"Replacing the microprocessor" on page 197.
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ThinkStation E32 Hardware Maintenance Manual