Lenovo ThinkCentre M75n, Hardware Maintenance Manual, Page: 111 / 120

9. Route the front antenna cable by the cable clip, and install the left cover.
10. Reinstall all removed parts. Turn over the computer so that the bottom cover is facing down. Then,
reconnect the power adapter and all disconnected cables to the computer.
Right cover
Prerequisite
Before you start, read Chapter 1 “Important safety information” on page 1 and print the following
instructions.
Avoid contact with the hot computer. During operation, the computer becomes hot enough to burn the skin.
Before you touch the computer, turn off the computer, disconnect power, and wait approximately 30 minutes
for the computer to cool.
Replacement procedure
1. Turn over the computer so that the bottom cover is facing up.
2. Remove the bottom cover. See “Bottom cover” on page 97.
3. Remove the M.2 solid-state drives. See “M.2 solid-state drives” on page 100.
4. Remove the Wi-Fi card. See “Wi-Fi card” on page 98.
5. Remove the system board. See “System board and coin-cell battery” on page 101.
Chapter 6
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Hardware removal and installation
105