Lenovo ThinkCentre M55e Hardware Maintenance Manual - Page 153
Types 8700, 8717, 8979, 8991, 9269, 9283, 9383, 9631, and 9646
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11. Lower the microprocessor straight down into the system board socket of the system board. 12. To secure the microprocessor in the socket, close the microprocessor retainer and lock it into position with the small handle. 13. Use the thermal grease syringe to place five drops of grease on the top of the microprocessor. Each drop of grease should be 0.03ml (3 tick marks on the grease syringe). 14. Install the heat sink and fan assembly on the system board. 15. Connect the heat sink and fan assembly cable to the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 130. 16. Go to "Completing the FRU replacement" on page 160. Types 8700, 8717, 8979, 8991, 9269, 9283, 9383, 9631, and 9646 Important The heat sink and microprocessor might be very hot. Make sure these components are cool enough to safely handle before continuing this procedure. 1. Remove the cover. See "Removing the cover" on page 129. 2. Place the computer on its right side to help make the microprocessor more accessible. Chapter 9. Replacing FRUs (tower computers) 147