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7. Remove the heat sink. See "Replacing the heat sink" on page 32.
8. Remove the system board. See "Replacing the system board" on page 48.
9. Remove the system board shielding fence, the side I/O bracket, and the back frame. See "Replacing the
integrated camera module" on page 49.
10. Remove the internal speakers. See "Replacing the internal speakers" on page 52.
11. Record the routing of the Wi-Fi antenna cables, and then disconnect the cables from the Wi-Fi card. See
"Replacing the Wi-Fi card" on page 38.
12. Replace the Wi-Fi antennas.
Figure 90. Removing the Wi-Fi antennas
Figure 91. Installing the Wi-Fi antennas
13. Route the new Wi-Fi antenna cables, and then connect the cables to the Wi-Fi card.
14. Reinstall the removed parts. To complete the replacement, see "Completing the parts replacement" on
page 55.
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M820z User Guide and Hardware Maintenance Manual
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