Lenovo IdeaCentre B520e - Manual (Page 45)

Step 9. Make sure that the microprocessor retainer is fully open.
Step 10. Holding the sides of the microprocessor with your fingers, remove the protective cover that
protects the gold contacts on the new microprocessor .
Step 11. Holding the sides of the microprocessor with your fingers, position the microprocessor so that the
notches on the microprocessor are aligned with the tabs in the microprocessor socket.
Important: To avoid damaging the microprocessor contacts, keep the microprocessor completely level
while installing it into the socket.
Step 12. Lower the microprocessor straight down into its socket on the motherboard.
Step 13. To secure the microprocessor in the socket, close the microprocessor retainer and lock it into
position with the small handle.
Step 14. Use a thermal grease syringe to place 5 drops of grease on the top of the microprocessor. Each
drop of grease should be 0.03ml (3 tick marks on the grease syringe).
Step 15. Install the system fan and heatsink back.
Step 16. Install the EMI cover, back deco, the computer cover and the computer stand back.
Chapter 8 . Replacing hardware 39