Lenovo ThinkCentre M900z 10F2, Hardware Maintenance Manual, Page: 115 / 146

7. Tear off the Wi-Fi antennas from the chassis.
Figure 42. Removing the Wi-Fi antennas
8. Position the new Wi-Fi antennas over the appropriate position, and then stick them onto the chassis.
9. Route the the Wi-Fi antenna cables, and then connect the cables to the Wi-Fi card. See “Replacing
the Wi-Fi card” on page 107.
10. Reinstall the system board shield. See “Replacing the system board shield” on page 98.
11. Reinstall the computer cover. See “Replacing the computer cover” on page 95.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 116.
Replacing the Wi-Fi card
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the Wi-Fi card, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the back cover. See “Removing the back cover” on page 90.
3. Remove the computer cover. See “Replacing the computer cover” on page 95.
4. Remove the system board shield. See “Replacing the system board shield” on page 98.
5. Locate the Wi-Fi card. See “Major FRUs and CRUs” on page 31.
Chapter 9
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Installing or replacing hardware
107