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7. Slide the system board to the front of the computer and then carefully lift the system board out of
the chassis.
8. Remove the microprocessor from the failing system board and install it on the new system board.
See "Microprocessor" on page 143.
9. Install the new system board into the chassis by aligning the eight screw holes in the new system board
with the corresponding mounting studs on the chassis. Then, install the eight screws in the sequence as
shown to secure the new system board.
Figure 105. Installing the eight screws to secure the system board
10. Install the heat sink and fan assembly and connect its cable to the new system board. See "Heat
sink and fan assembly" on page 142.
11. Install all memory modules and PCIe cards removed from the failing system board onto the new system
board. See "Memory module" on page 101 and "PCIe card" on page 96.
12. Refer to your record to connect cables to the new system board. You also can refer to "Parts on the
system board" on page 34 to help you locate the connectors on the system board and connect cables.
13. To complete the installation or replacement, go to "Completing the parts replacement" on page 166.
The failing system board must be returned with a microprocessor socket cover to protect the pins during
shipping and handling.
To install the microprocessor socket cover, do the following:
1. After you have removed the microprocessor from the failing system board, close the microprocessor
retainer. Then put the small handle to the locked position to secure the retainer in place.
.
Chapter 9
Hardware installation and replacement
147
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