Replacing The System Board - Lenovo ThinkCentre 3231 Hardware Maintenance Manual

Replacing the system board

This section provides instructions on how to replace the system board.
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 removing the
computer cover.
Note: When replacing the system board, you must also order a new retention
module for the new system board. Make sure you have a retention module for the
new system board before continuing this procedure.
To replace 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
1. Remove the computer cover. See "Removing the computer cover" on page 86.
2. Place the computer on the right side to make the system board more
accessible.
3. Remove any adapter cards installed. See "Replacing an adapter card" on page
103.
4. Disconnect the signal and power cables from the hard disk drive.
Chapter 8. Replacing FRUs - Tower computers
99