Lenovo ThinkCentre M93z Hardware Maintenance Manual page 122

This section provides instructions on how to replace the microprocessor fan.
To replace the microprocessor fan, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer cover. See "Removing the computer cover" on page 84.
4. Locate the microprocessor fan. See "Locating major FRUs and CRUs" on page 71.
5. Remove the VESA mount bracket and disconnect the cables of the microprocessor fan from the system
board. See "Replacing the thermal sensor" on page 98.
6. Remove the screws
Figure 48. Removing the microprocessor fan
7. Align the screw holes in the new microprocessor fan with the corresponding ones in the chassis. Then,
install the screws to secure the new microprocessor fan to the chassis.
8. Connect the cables of the new microprocessor fan to the system board. See "Locating parts on the
system board" on page 74.
9. Reinstall the VESA mount bracket. See "Replacing the thermal sensor" on page 98.
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 127.
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ThinkCentre M93z Hardware Maintenance Manual
1 to disengage the microprocessor fan from the chassis.