Lenovo ThinkCentre M91p Hardware Maintenance Manual - Page 97
Replacing the internal speaker, To install the new system fan assembly into the chassis
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11. To install the new system fan assembly into the chassis, align the other two holes in the system fan assembly with the long rubber mounts in the chassis. Pull the rubber mounts through the holes in the system fan assembly until the system fan is in place. Figure 27. Installing the system fan assembly 12. Slide the system board to the rear of the chassis and then pivot the system board until it snaps into position. 13. Reconnect all cables that were disconnected from the system board. 14. Go to "Completing the parts replacement" on page 98. Replacing the internal speaker Attention: Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkCentre User Guide. To obtain a copy of the ThinkCentre User Guide, go to: http://www.lenovo.com/ThinkCentreUserGuides This section provides instructions on how to replace the internal speaker. To replace the internal speaker, 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. Open the computer cover. See "Opening the computer cover" on page 72. 3. Locate the internal speaker. See "Locating components" on page 71. 4. Disconnect the internal speaker cable from the system board. See "Locating parts on the system board" on page 71. Chapter 8. Replacing FRUs 91