Step 8.
Remove the three screws that secure the system fan to the chassis.
Step 9.
Disconnect the system fan power cable from the motherboard.
Step 10. Lift the system fan to remove it.
Step 11. To install the new system fan:
a.
Place the new system fan into position, and then secure it to the chassis with three screws.
b.
Connect the system fan power cable to the connector on the motherboard.
Step 12. Reattach the EMI cover, stand holder, rear cover, and stand base.
Replacing the heat-sink
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 heat-sink:
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 stand holder. Refer to Removing the stand holder.
Step 7.
Remove the EMI cover. Refer to Removing the EMI cover.
.
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