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a. "PCIe card" on page 94.
b. "Memory module" on page 103.
c. "M.2 solid-state drive" on page 96.
d. "Wi-Fi card" on page 141.
e. "Front audio and USB assembly" on page 133.
f.
"Heat-sink-and-fan assembly" on page 149.
3. Record the cable routing and cable connections, and then disconnect all cables from the system board.
See "Parts on the system board" on page 37.
4. Remove the nine screws that secure the system board in the sequence as shown in the following
illustration.
Figure 109. Removing the nine screws that secure the system board
5. Slide the system board to the front of the computer, and then carefully lift the system board out of the
chassis.
Note: Carefully handle the system board by its edges.
6. Remove the microprocessor from the failing system board, and then install it onto the new system
board. See "Microprocessor" on page 150.
7. Install the new system board into the chassis by aligning the nine screw holes in the new system board
with the corresponding mounting studs on the chassis. Then, install the nine screws in the sequence as
shown to secure the new system board.
.
Chapter 9
Hardware removal and installation
153
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