Lenovo ThinkStation 2551, Hardware Maintenance Manual, Page: 161 / 188

8. Install the screw to secure the cover presence switch to the chassis.
Figure 92. Installing the new cover presence switch
9. Reconnect the cover presence switch cable to the system board. See “Locating parts on the system
board” on page 84.
10. Reinstall the front bezel. See “Removing and reinstalling the front bezel” on page 122.
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 167.
Replacing the internal speaker
Attention:
Do not open your computer or attempt any repair before reading and understanding “Important Safety Information”
on page 1.
This section provides instructions on how to replace the internal speaker.
Note: The internal speaker is only available in some models.
To replace the internal speaker, do the following:
Chapter 11
.
Replacing FRUs (for machine types: 3688, 3690, 3691, 3693, and 3695)
155