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Replacing the system fan
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
To replace the system fan
Step 1.
Remove any media from the drives, shut down the operating system, and turn off the computer
and all attached devices.
Step 2.
Unplug all power cords from electrical outlets.
Step 3.
Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to Locating connectors,
controls and components to locate the various connectors.
Step 4.
Remove the stand base. Refer to Removing the stand base.
Step 5.
Remove the rear cover. Refer to Removing the rear cover.
Step 6.
Remove the screw that secures the system fan to the chassis.
Step 7.
Disconnect the system fan power cable from the motherboard.
Step 8.
Lift the system fan up to remove it.
Step 9.
To install the new system fan:
a.
Place the new system fan into position, and then secure it to the chassis with one screw.
b.
Connect the system fan power cable to the connector on the motherboard.
Step 10. Reattach the rear cover and stand base.
.
Chapter 8
Replacing hardware
43
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