Lenovo ThinkCentre M55e Hardware Maintenance Manual - Page 157
Replacing a memory module, board
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12. 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). 13. Install the heat sink and fan assembly on the system board. 14. 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. 15. Go to "Completing the FRU replacement" on page 160. Replacing a memory module To replace a memory module: 1. Remove the computer cover. See "Removing the cover" on page 129. Note: For this procedure, it helps to lay the computer on its side. 2. Locate the memory module connectors. See "Identifying parts on the system board" on page 130. 3. Remove the memory module being replaced by opening the retaining clips as shown. 4. Position the new memory module over the memory connector. Make sure the notch 1 on the memory aligns correctly with the connector key 2 on the system board. Push the memory module straight down into the connector until Chapter 9. Replacing FRUs (tower computers) 151