Lenovo ThinkCentre M91p (English) User Guide - Page 58

Replacing the internal speaker

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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 29. 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. What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the replacement, go to "Completing the parts replacement" on page 51. Replacing the internal speaker Attention: Do not open your computer or attempt any repair before reading and understanding the "Important safety information" on page vii. 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 28. 3. Locate the internal speaker. See "Locating components" on page 10. 4. Disconnect the internal speaker cable from the system board. See "Locating parts on the system board" on page 10. 44 ThinkCentre User Guide

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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 29. 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.
What to do next:
•
To work with another piece of hardware, go to the appropriate section.
•
To complete the replacement, go to “Completing the parts replacement” on page 51.
Replacing the internal speaker
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
on page vii.
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 28.
3. Locate the internal speaker. See “Locating components” on page 10.
4. Disconnect the internal speaker cable from the system board. See “Locating parts on the system
board” on page 10.
44
ThinkCentre User Guide