Lenovo ThinkCentre E51 Hardware Maintenance Manual - Page 116

7. Using the vacuum pen 1 , remove the microprocessor 2 from the system board socket by lifting it straight up and out of the socket. Important Do not touch the gold contacts on the bottom of the microprocessor. If you must touch the microprocessor, touch only the sides. Attention: Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must be kept as clean as possible. 8. Make sure that the small handle is in the raised position. 9. Use the vacuum pen 1 to pick up the microprocessor. 10. Position the microprocessor so that the small triangle on one corner is aligned with the corresponding triangle on the microprocessor socket. 11. Using the vacuum pen, lower the microprocessor straight down into the microprocessor socket. 12. Lower the small handle to secure the microprocessor in the socket. 110 Hardware Maintenance Manual