Replacing the rear I/O assembly. Lenovo E73z, 10Bl

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 other flat 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 75.

4. Locate the system board shield in the computer. See “Locating major FRUs and CRUs” on page 66.

5. Remove the two screws 1 that secures the system board shield, and then slide the system board shield out of the computer.

Figure 21. Removing the system board shield

6. To reinstall the system board shield, slide the system board shield into the system board shield slot so that the screw holes aligns with that in the computer.

7. Reinstall the two screws to secure the system board shield to the computer.

8. Go to “Completing the parts replacement” on page 108.

Replacing the rear I/O assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the

“Important safety information” on page 1

This section provides instructions on how to replace the rear I/O assembly.

84 ThinkCentre E73z Hardware Maintenance Manual

To replace the rear 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 other flat 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 75.

4. Remove the system board shield. See “Removing and reinstalling the system board shield” on page 83.

5. Locate the rear I/O assembly. See “Locating major FRUs and CRUs” on page 66.

6. Remove the five screws 1 that secure the rear I/O assembly. Remove the rear I/O assembly from the computer.

Figure 22. Removing the power cord connector

Chapter 9 .

Replacing FRUs

85