Lenovo ThinkCentre Edge 72 Hardware Maintenance Manual (HMM) for ThinkCentre E - Page 147

To replace the front audio and USB assembly, do the following

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9. Install the new system fan assembly by aligning the new rubber mounts that came with the new system fan assembly with the corresponding holes in the chassis, and then push the rubber mounts through the holes. Then, carefully pull on the tips of the rubber mounts from the bottom until the new system fan assembly is secured in place. Figure 84. Installing the system fan assembly 10. Connect the new system fan assembly cable to the system fan connector on the system board. See "Locating parts on the system board" on page 79. 11. Reinstall the heat sink fan duct. See "Replacing the heat sink and fan assembly" on page 133. 12. Reinstall the hard disk drive. See "Replacing the hard disk drive" on page 123. 13. To complete the installation or replacement, go to "Completing the parts replacement" on page 154. 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" 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 front audio and USB assembly. To replace the front audio and USB assembly, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See "Removing the computer cover" on page 116. 3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 117. Chapter 10. Replacing FRUs (Machine Types: 3493, 3496, and 3497) 143

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9. Install the new system fan assembly by aligning the new rubber mounts that came with the new system
fan assembly with the corresponding holes in the chassis, and then push the rubber mounts through the
holes. Then, carefully pull on the tips of the rubber mounts from the bottom until the new system fan
assembly is secured in place.
Figure 84. Installing the system fan assembly
10. Connect the new system fan assembly cable to the system fan connector on the system board. See
“Locating parts on the system board” on page 79.
11. Reinstall the heat sink fan duct. See “Replacing the heat sink and fan assembly” on page 133.
12. Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 123.
13. To complete the installation or replacement, go to “Completing the parts replacement” on page 154.
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”
in the
ThinkCentre User Guide
. To obtain a copy of the
ThinkCentre User Guide
, go to:
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. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 116.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 117.
Chapter 10
.
Replacing FRUs (Machine Types: 3493, 3496, and 3497)
143