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10.Lower the microprocessor straight down into the system board socket of the new system board.
11.To secure the microprocessor in the socket, close the microprocessor retainer and lock it into position
with the small handle.
12.Install the heat sink and fan assembly on the system board.
13.Connect the heat sink and fan assembly cable to the system board. See "Locating parts on the system
board" on page 95.
14.Position the fan duct on the heat sink fan.
15.Go to "Completing the FRU replacement" on page 113.
Replacing the hard disk drive
Attention
Do not open your computer or attempt any repair before reading and understanding the "Important safety information"
in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre
Safety and Warranty Guide, go to:http://www.lenovo.com/support
This section provides information on how to remove and replace the hard disk drive.
To remove or replace the hard disk drive:
1. Remove the cover. See "Removing the cover" on page 94.
2. Remove the front bezel and drive bay assembly. See "Accessing system board components and drives"
on page 96.
3. Use the blue handle to pivot the hard disk drive and bracket upward, slide the hard drive to the left until it
is free of the retaining clips in the bottom of the chassis, and then completely remove it from the chassis.
106 ThinkCentre Hardware Maintenance Manual