Lenovo 3376, Maintenance Manual

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4. Remove the hard disk drive from the chassis. See “Replacing the primary hard disk drive” on page 90.
5. Remove the power supply assembly from the chassis. See “Replacing the power supply assembly”
on page 95.
6. Remove all memory modules and PCI cards that are currently installed. See “Installing or replacing a
memory module” on page 87 and “Installing or replacing a PCI card” on page 84.
7. Carefully take note of the locations of all cable connections on the system board and disconnect all
the cables. See “Locating parts on the system board” on page 72.
8. Remove the heat sink and fan assembly from the failing system board. See “Replacing the heat sink and
fan assembly” on page 97.
9. Remove the eight screws that secure the system board.
Figure 34. Removing the eight screws that secure the system board
10. Carefully slide the system board so that it can be released from the mounting studs that secure the
system board in place.
11. Lift the system board out of the chassis.
12. Remove the microprocessor from the failing system board and install it on the new system board.
See “Replacing the microprocessor” on page 99.
13. Install the new system board into the chassis by aligning the eight mounting studs in the chassis with the
corresponding holes in the new system board. Carefully slide the new system board into the chassis until
it is secured in place by the mounting studs. Then, install the eight screws to secure the system board.
14. Install the heat sink and fan assembly and connect the heat sink and fan assembly cable to the new
system board. See “Replacing the heat sink and fan assembly” on page 97.
15. Install the hard disk drive . See “Replacing the primary hard disk drive” on page 90.
16. Install the power supply assembly. See “Replacing the power supply assembly” on page 95.
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ThinkCentre Edge Hardware Maintenance Manual