Lenovo ThinkCentre, Hardware Maintenance Manual

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Replacing the system board
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
CAUTION:
The heat sink and microprocessor might be very hot. Turn off the computer and
wait three to five minutes to let the computer cool before opening the computer
cover.
This section provides instructions on how to remove and replace the system board.
1. Open the computer cover. See “Opening the cover” on page 127.
2.
Pivot the drive-bay assembly upward to gain easier access to the system
board.
3. Disconnect all cables connected to the system board. See “System board
connectors” on page 126.
4. Remove the hard disk drive and disconnect it from the system board. See
“Replacing the hard disk drive” on page 142.
5.
Remove any adapter cards installed in the PCI connectors. See “Installing or
replacing an adapter card” on page 151.
6. Remove the heat sink and microprocessor from the failing system board. See
“Replacing the microprocessor” on page 138.
7. Remove the memory modules from the failing system board and install them
into the same position on the new system board. See “Replacing a memory
module” on page 129.
Chapter 9. Replacing FRUs - 607 computers
133