Lenovo ThinkCentre A85, Hardware Maintenance Manual

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6. Carefully check the four corners of the socket cover to make sure that the cover is secured in the
microprocessor socket.
7. Lower the microprocessor retainer and then lower the lever to secure the retainer. Make sure the
lever is locked into position.
8. Follow any additional instructions included with the replacement part you received.
Note: If your system board has two microprocessor sockets, be sure to install a socket cover for each
microprocessor socket.
Completing the parts replacement
After completing the installation or replacement for all parts, you need to reinstall the computer cover
and reconnect cables.
To reinstall the computer cover and reconnect cables to your computer, do the following:
1. Make sure that all components have been reassembled correctly and that no tools or loose screws are
left inside your computer. See “Locating components” on page 103 for the locations of the various
components in your computer.
2. Make sure that all the internal cables are routed properly to avoid interference with lowering the drive bay
assembly and closing the computer cover. Keep the cables clear of the hinges and sides of the chassis.
3. Lower the drive bay assembly. See “Accessing the system board components and drives” on page 109.
4. If you have removed the front bezel, reinstall it. See “Removing and reinstalling the front bezel” on
page 108.
5. Position the computer cover on the chassis so that the rail guides on the computer cover engage the
rails on the chassis. Then, slide the computer cover to the front of the computer until it snaps into
position and is closed. Then, install the two screws to secure the computer cover.
Figure 78. Reinstalling the computer cover
6. Lock the computer cover if you have a computer cover lock.
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ThinkCentre Hardware Maintenance Manual