Lenovo ThinkStation 2551, Hardware Maintenance Manual, Page: 107 / 188

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 120.
Replacing the front fan assembly
Attention:
Do not open your computer or attempt any repair before reading and understanding “Important Safety Information”
on page 1.
This section provides instructions on how to replace the front fan assembly.
Note: The front fan assembly is only available in some models.
To replace the front 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 88.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 89.
4. Disconnect the front fan assembly cable from the power fan connector on the system board. See
“Locating parts on the system board” on page 76.
5. The front fan assembly is attached to the chassis by four rubber mounts. Remove the front fan assembly
by breaking or cutting the rubber mounts and gently pulling the front fan assembly out of the chassis.
Note: The new front fan assembly will have four new rubber mounts attached.
Figure 28. Removing the front fan assembly
6. Install the new front fan assembly by aligning the new rubber mounts with the corresponding holes in
the chassis and push the rubber mounts through the holes
Chapter 10
.
Replacing FRUs (for machine types: 2551, 2552, 2553, 2554, and 2555)
101