Lenovo 10125/90A4, Maintenance Manual

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Step 7. Holding the sides of the microprocessor with your fingers, remove the protective cover 1 that
protects the gold contacts on the new microprocessor. 2
Step 8. 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 9. Lower the microprocessor straight down into its socket on the motherboard.
Step 10. To secure the microprocessor in the socket, close the microprocessor retainer and lock it into
position with the small handle.
Step 11. 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 12. Reattach the heat-sink assembly and the computer cover.
Replacing an AMD CPU
Note: For this procedure, it helps to lay the computer flat.
To replace the CPU
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
Step 2. Unplug all power cords from electrical outlets.
Chapter 8
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Replacing hardware
37