System Fan - Lenovo ThinkCentre M75n Hardware Maintenance Manual

7. Install the coin-cell battery.
8. Route the coin-cell battery cable under the system fan and connect the cable to the coin-cell battery
connector on the system board. See "System board" on page 58.
9. Reinstall the removed parts. Then, reconnect the power adapter and all disconnected cables to the
computer.
10. Turn over the computer so that the bottom cover is facing down.

System fan

Prerequisite
Before you start, read Chapter 1 "Important safety information" on page 1 and print the following
instructions.
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 69.
3. Turn over the computer so that the computer cover is facing up.
4. Remove the computer cover and the rear I/O bracket. See "Computer cover and rear I/O bracket" on
page 73.
5. Disconnect the system fan cable from the microprocessor fan connector on the system board. See
"System board" on page 58.
6. Remove the system fan.
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ThinkCentre M75nHardware Maintenance Manual