Replacing The System Board - Lenovo 7269D7U - Topseller M58e Sff E7500 2.93G 3Gb 320Gb Dvdrw W7p/Xpp Hardware Maintenance Manual

11. Go to "Completing the FRU replacement" on page 118.

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 99.
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 98.
4. Remove the hard disk drive and disconnect it from the system board. See "Replacing the hard disk
drive" on page 110.
5. Remove any adapter cards installed in the PCI connectors. See "Installing or replacing an adapter
card" on page 116.
6. Remove the heat sink and microprocessor from the failing system board. See "Replacing the
microprocessor" on page 107.
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 100.
8. Slide the failing system board toward the front until it can be lifted out of the chassis.
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ThinkCentre Hardware Maintenance Manual