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Replacing the microprocessor fan assembly - ThinkCentre M90z

This section provides instructions on how to replace the microprocessor fan assembly.

To replace the microprocessor fan assembly, 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.
  4. Remove the frame stand or lift stand. See Removing or reinstalling the rear I/O assembly cover.or Removing or reinstalling the lift stand.
  5. Remove the rear I/O assembly cover. See Removing or reinstalling the rear I/O assembly cover.
  6. Remove the wall mount cover. See Removing or reinstalling the wall mount cover.
  7. Note the routing of the microprocessor fan assembly cable and then disconnect the microprocessor fan assembly cable from the system board.
  8. Remove the three screws 1 that secure the microprocessor fan assembly and then lift the microprocessor fan assembly off the system board.

Removing the microprocessor fan assembly

  1. Position the new microprocessor fan assembly on the system board and align the three screw holes in the new microprocessor fan assembly with those in the system board.
  2. Install the three screws to secure the microprocessor fan assembly to the system board.
  3. Connect the microprocessor fan assembly cable to the system board. See System board part and connector locations.
  4. Reinstall the wall mount cover and the rear I/O assembly cover.
  5. To complete the installation or replacement, see Completing the parts replacement.