Lenovo ThinkCentre M91p (English) User Guide - Page 59

Replacing the front audio and USB assembly

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5. Press the internal speaker lock latch 1 , slide the internal speaker downwards to remove it from the chassis. Figure 30. Removing the internal speaker 6. Position the new internal speaker into the metal clips 2 and push the internal speaker upwards until it is secured by the lock latch 1 . 7. Connect the new internal speaker cable to the system board. See "Locating parts on the system board" on page 10. 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 51. Replacing the front audio and USB assembly 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 front audio and USB assembly. To replace the front audio and USB assembly, 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. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 28. 4. Disconnect the front audio and USB assembly cables from the system board and note the cables routing. See "Locating parts on the system board" on page 10. Chapter 5. Installing or replacing hardware 45

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5. Press the internal speaker lock latch
1
, slide the internal speaker downwards to remove it from the
chassis.
Figure 30. Removing the internal speaker
6. Position the new internal speaker into the metal clips
2
and push the internal speaker upwards until it is
secured by the lock latch
1
.
7. Connect the new internal speaker cable to the system board. See “Locating parts on the system
board” on page 10.
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 51.
Replacing the front audio and USB assembly
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 front audio and USB assembly.
To replace the front audio and USB assembly, 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. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 28.
4. Disconnect the front audio and USB assembly cables from the system board and note the cables
routing. See “Locating parts on the system board” on page 10.
Chapter 5
.
Installing or replacing hardware
45