Lenovo ThinkCentre A61 Hardware Maintenance Manual page 115

6. Pull on the tips of the rubber mounts until the fan assembly is in place.
7. Route the fan cable to the system board and connect the cable to the system
board. See "Locating parts on the system board" on page 89.
8. Replace the front bezel.
9. Go to "Completing the FRU replacement" on page 140.
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Chapter 8. Replacing FRUs - Tower Computers