Lenovo C320 Lenovo C225\C320\C325 Hardware Maintenance Manual - Page 48

Replacing the CPU, Remove the hard disk drive cover. Refer to Replacing the hard disk drive.

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Step 11. Line up the new heatsink then secure it to the motherboard with the screws. Step 12. Reattach the EMI cover, the computer cover, the speaker cover, the hard disk drive cover and the optical disk drive. Replacing the CPU Note: Turn off the computer and wait 3 to 5 minutes to let the computer cool down before removing the computer cover. Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches or other damage. To replace the CPU Important: The following description applies for model C320 only. Step 1. Remove any media (disks, CDs, 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. Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. Refer to "Left and right view" and "Rear view" for help with locating the various connectors. Step 4. Remove the optical drive. Refer to "Replacing the optical drive". Step 5. Remove the hard disk drive cover. Refer to "Replacing the hard disk drive". Step 6. Remove the speaker cover. Refer to "Removing the speaker cover". Step 7. Remove the computer cover. Refer to "Removing the computer cover". Step 8. Remove the EMI cover. Refer to " Removing the EMI Cover". Step 9. Remove the heatsink. Refer to "Replacing the heatsink". Step 10. Lift the small handle and open the retainer. Step 11. Lift the microprocessor straight up and out of the socket. Attention: Do not touch the gold contacts on the bottom of the microprocessor. When handing the microprocessor, touch only the sides. 44 Lenovo C2/C3 Hardware Maintenance Manual

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Step 11. Line up the new heatsink then secure it to the motherboard with the screws.
Step 12. Reattach the EMI cover, the computer cover, the speaker cover, the hard disk drive cover and
the optical disk drive.
Replacing the CPU
Note:
Turn off the computer and wait 3 to 5 minutes to let the computer cool down before removing the
computer cover.
Note:
It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
To replace the CPU
Important:
The following description applies for model C320 only.
Step 1.
Remove any media (disks, CDs, 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.
Step 3.
Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to “Left and right view”
and “Rear view” for help with locating the various connectors.
Step 4.
Remove the optical drive. Refer to “Replacing the optical drive”.
Step 5.
Remove the hard disk drive cover. Refer to “Replacing the hard disk drive”.
Step 6.
Remove the speaker cover. Refer to “Removing the speaker cover”.
Step 7.
Remove the computer cover. Refer to “Removing the computer cover”.
Step 8.
Remove the EMI cover. Refer to “ Removing the EMI Cover”.
Step 9.
Remove the heatsink. Refer to “Replacing the heatsink”.
Step 10. Lift the small handle and open the retainer.
Step 11. Lift the microprocessor straight up and out of the socket.
Attention:
Do not touch the gold contacts on the bottom of the microprocessor. When handing the
microprocessor, touch only the sides.
44
Lenovo C2/C3 Hardware Maintenance Manual