Lenovo ThinkCentre M73z Hardware Maintenance Manual page 93

This section provides instructions on how to replace the converter board.
To replace the converter 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. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer stand. See "Removing and installing the computer stand" on page 73.
4. Remove the computer cover. See "Removing the computer cover" on page 76.
5. Remove the optical drive. See "Replacing the optical drive" on page 85.
6. Remove the two screws
Figure 23. Removing the two screws that secure the converter board
7. Disconnect the two converter-board cables from the converter board, and then remove the converter
board from the chassis.
8. To install the new converter board, connect the two converter-board cables to the new converter board.
9. Position the converter board so that the two screw holes in the converter board align with the
corresponding holes in the chassis, and then install the two screws to secure the converter board to
the chassis.
10. Install the optical drive. See "Replacing the optical drive" on page 85.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to "Completing the parts replacement" on page 118.
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Chapter 8 Replacing FRUs
87