Removing And Replacing The System Board - Lenovo ThinkCentre 8098 Hardware Maintenance Manual

Removing and replacing the system board

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Hardware Maintenance Manual
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.