Lenovo 8098 manual Removing and replacing the system board

Removing and replacing the system board

1.Open the cover. See “Opening the cover” on page 138.

2.While holding the left rear of the computer chassis down, pull upward on the handle provided, to remove the PCI riser card assembly along with any adapters.

3.Disconnect all cables connected to the system board. See “Identifying parts on the system board” on page 140.

4.Using the two blue handles provided, lift the system board assembly out of the computer.

Note: You will have to tilt the system board assembly and move it around the edge of the power supply assembly to remove it from the computer.

5.Note the location of the memory modules and remove them from the failing system board and install them on the new system board in the same location as they were on the failing system board. See “Removing and replacing memory” on page 141.

6.Remove the heat sink and microprocessor from the failing system board and install them on the new system board. See “Removing and replacing the microprocessor” on page 147.

Continue to the next step after installing the heat sink and microprocessor on the new system board.

7.Install the new system board assembly into the computer chassis by aligning the two tabs on the rear of the system board assembly with the slots in the rear of the computer chassis. Slide the system board assembly to the rear until the front edge of the system board assembly fits behind the flange in the front and is seated flush to the bottom of the chassis.

8.Reconnect all cables that were disconnected from the system board. Make sure all cables are routed correctly.

146Hardware Maintenance Manual