Lenovo ThinkStation 2551 Hardware Maintenance Manual page 129

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. Open the computer cover. See "Opening the computer cover" on page 122.
3. Remove the front bezel by releasing the three plastic tabs on the top of the front bezel and pivoting the
front bezel outward to remove it from the computer.
Figure 54. Removing the front bezel
.
Chapter 11 Replacing FRUs (for machine types: 3688, 3690, 3691, 3693, and 3695)
123