Replacing The Heat-Sink - Lenovo IdeaCentre A520 Hardware Maintenance Manual

Step 5. Remove the 3 screws that secure the system fan to the heat-sink.
Step 6. Disconnect the power cable from the motherboard.
Step 7. Lift up the system fan to remove it.
Step 8. To install the new system fan:
a. Line up the new system fan with the mounting holes on the heat-sink and place it into position.
b. Secure the new system fan to the heat-sink with the 3 screws.
c. Connect the new power cable to the connector on motherboard.
Step 9. Reattach the base cover and secure it with the screws.

Replacing the heat-sink

Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover.
To replace the heat-sink:
Step 1. Remove any media (disks, CDs, DVDs or memory cards) 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 "Left and right view"
and "Rear view" for help with locating the various connectors.
Step 4. Remove the base cover. Refer to "Removing the base cover".
Step 5. Remove the system fan. Refer to "Replacing the system fan".
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IdeaCentre A520 All-In-One PCHardware Maintenance Manual
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