Lenovo ThinkStation 2551 Hardware Maintenance Manual page 162

1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Open the computer cover. See "Opening the computer cover" on page 122.
3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 122.
4. Locate the internal speaker. See "Locating major FRUs and CRUs" on page 81.
5. Disconnect the internal speaker cable from the internal speaker connector on the system board. See
"Locating parts on the system board" on page 84.
6. Remove the cover presence switch (intrusion switch). See "Replacing the cover presence switch" on
page 153.
7. Push the internal speaker outward through the hole
chassis. Then, slide the internal speaker to the right to remove it from the chassis.
Figure 93. Removing the internal speaker
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to disengage it from the two metal tabs on the