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To replace the system board, do the following:
1. 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.
2. Remove the computer cover. See “Removing the computer cover” on page 159.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 160
4. Press the retaining clip
1
in the direction as shown and pivot the drive bay assembly upward at the
same time.
Figure 161. Pivoting the drive bay assembly upward
5. Remove all memory modules and PCI cards that are currently installed. See “Installing or replacing a
memory module” on page 164 and “Installing or replacing a PCI card” on page 162.
6. Remove the heat sink and fan assembly from the failing system board. See “Replacing the heat sink and
fan assembly” on page 191.
Note:
Do not let the thermal grease on the bottom of the heat sink and fan assembly get in contact
with anything.
7. Record the cable routing and cable connections and then disconnect all cables from the system board.
8. Remove the eight screws that secure the system board by following the sequence shown in the
following illustration.
Chapter 9
.
Replacing FRUs (machine types: 10A2, 10A3, 10A8, 10A9, 10AH, 10AJ, 10AM, and 10AN)
197
Summary of Contents for ThinkCentre M83
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