Replacing The Heat Sink Assembly - Lenovo 53581FU - IdeaCentre K220 Desktop Hardware Replacement Manual

power supply align with those in the chassis.
6. Install the four screws to secure the power supply. Note: Use only the screws
provided by Lenovo.
7. Reconnect the power supply connectors to the system board.
8. Reconnect a power supply connector to each of the drives.
9. Refer to the "Completing the installation".

Replacing the heat sink assembly

Attention
Do not remove the computer cover or attempt any repair before reading the
"Important safety information" in the Safety and Warranty Guide that was
included with your computer or in the Hardware Maintenance Manual (HMM)
for the computer. To obtain copies of the Safety and Warranty Guide or
HMM, go to the Support Web site at:
http://consumersupport.lenovo.com
To replace the heat sink assembly:
1. Remove the computer cover. Refer to "Removing the computer cover".
2. Lay the computer on its side.
3. Locate the heat sink. Refer to "Identifying parts on the system board".
4. Disconnect the heat sink and the fan assembly cable from the system board.
5. Remove the four screws
system board.
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Hardware Replacement Guide
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securing the heat sink and fan assembly to the
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