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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 76.
Replacing the system fan assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the
"Important safety information" on page v.
This section provides instructions on how to replace the system fan assembly.
To replace the system fan 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 35.
3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 36.
4. Pivot the drive bay assembly upward to gain access to the system fan assembly. See "Accessing the
system board components and drives" on page 37.
5. Remove the hard disk drive for easier access to the system fan assembly. See "Replacing the hard
disk drive" on page 43.
6. Remove the heat sink fan duct. See "Replacing the heat sink and fan assembly" on page 58.
7. Note the cable routing and disconnect the system fan assembly cable from the power fan connector on
the system board. See "Locating parts on the system board" on page 13.
8. The system fan assembly is attached to the chassis by four rubber mounts. Remove the system fan
assembly by cutting the four rubber mounts
Note: The new system fan assembly will have four new rubber mounts attached.
Figure 47. Removing the system fan assembly
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ThinkCentre E73 User Guide
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and lifting the system fan assembly out of the chassis.
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