Replacing the system board - ThinkStation E20 (type 4215, 4219, 4220, 4221, 4222)
Attention Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkStation Safety and Warranty Guide, go to Lenovo Support Website
This section provides instructions on how to replace the system board.
The heat sink and fan assembly 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 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, do the following:
Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.
Remove the eight screws that secure the system board to the chassis, following the sequence shown in the illustration:
Carefully lift the failing system board out of the chassis.
Position the new system board into the chassis so that the screw holes in the new system board are aligned with those in the chassis. Install the screws that secure the system board following the sequence shown in figure above.
Remove the microprocessor socket cover from the new system board.
Install the memory modules, PCI cards, battery, microprocessor, and heat sink and fan assembly that you removed from the failing system board to the new system board.