Lenovo ThinkCentre E73 Hardware Maintenance Manual page 141

To replace an optical drive, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See "Removing the computer cover" on page 126.
3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 127.
4. Pivot the drive bay assembly upward. See "Accessing the system board components and drives" on
page 128
5. Disconnect the signal cable and the power cable from the optical drive.
6. Hold the optical drive and remove the two screws that secure the optical drive.
Figure 75. Removing the optical drive
.
Chapter 10 Replacing FRUs (machine types: 10AU, 10AW, 10BF, and 10BG)
137