Replacing The Motherboard - Lenovo S40–40 Hardware Maintenance Manual

Step 11. Holding the sides of the microprocessor with your fingers, remove the protective cover
protects the gold contacts on the new microprocessor.
Step 12. 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 13. Lower the microprocessor straight down into its socket on the motherboard.
Step 14. To secure the microprocessor in the socket, close the microprocessor retainer and lock it into
position with the small handle.
Step 15. Use a thermal grease syringe to place 5 drops of grease on the top of the microprocessor. Each
drop of grease should be 0.03 ml (3 tick marks on the grease syringe).
Step 16. Reattach the heat-sink module, motherboard cover, hinge fixing bracket, rear cover and stand.

Replacing the motherboard

Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
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Lenovo S40–40Hardware Maintenance Manual
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