14.Use the vacuum pen 1 to lower the microprocessor straight down into the microprocessor socket.
15.Lower the microprocessor retainer and secure it with the lever.
Note: There will be a black plastic cover on the microprocessor retainer to protect the socket on the new system board. When you lock the microprocessor in position, remove the black plastic cover. Place the black plastic cover on the microprocessor retainer of the defective system board.
16.Install and secure the heat sink on the microprocessor.
17.Remove the memory modules from the defective system board, and install them on the new system board. See to “Replacing a memory module” on page 17. Return here after installing the memory modules and continue to the next step.
18.Install the new system board assembly into the computer chassis by aligning the tabs on the rear of the system board with the slots in the rear of the computer chassis. Slide the system board toward the rear of the chassis.
19.Reconnect the cables that were disconnected from the system board. Make sure all cables are routed correctly. See “Identifying parts on the system board” on page 4.
20.Reinstall the PCI riser assembly and adapters.
21.Go to “Completing the CRU replacement” on page 28.
Replacing the microprocessor
Attention
Do not open your computer or attempt any repair before reading the “Important safety information” in the Quick Reference that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Quick Reference or the HMM, go to the Support Web site at http://www.lenovo.com/think/support.
This section provides instructions on how to replace the microprocessor.
Important
Turn off your computer for at least one hour before removing the microprocessor to allow the thermal interface between the microprocessor and the heat sink time to cool down.
