Lenovo ThinkCentre M90z, Hardware Maintenance Manual, Page: 105 / 288

Replacing the right I/O assembly
Attention
Do not open your computer or attempt any repair before reading and understanding the “Important safety
information” in the
ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy
of the ThinkCentre Safety and Warranty Guide , go to:http://www.lenovo.com/support
This section provides instructions on how to replace the right I/O assembly.
To replace the right I/O assembly, 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 cover. See “Removing the computer cover” on page 71.
4. Locate the right I/O assembly. See “FRU locations” on page 69.
5. Disconnect the right I/O assembly cable and the intrusion switch cable from the right I/O assembly.
6. Remove the three screws 1 that secure the right I/O assembly and then remove the right I/O assembly
from the computer.
Figure 36. Removing the right I/O assembly
7. To install the new right I/O assembly into the computer, position the new right I/O assembly into place
and then align the screw holes with the corresponding holes in the computer main bracket.
8. Install the three screws to secure the right I/O assembly to the computer main bracket.
9. Connect the right I/O assembly cable and the intrusion switch cable to the new right I/O assembly.
10. Go to “Completing the parts replacement” on page 110.
Chapter 8
.
Replacing FRUs
99