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Dell Precision Tower 3420 - Installing the Heat Sink Fan Cover; Removing the Heat Sink Assembly

Dell Precision Tower 3420
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Installing the heat sink fan cover
1. Align the slots on the fan duct, with the screws on the heat sink.
2. Insert the fan duct until it clicks into place.
3. Install the cover.
4. Follow the procedure in After Working Inside Your Computer.
Removing the heat sink assembly
1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the:
a. cover
b. front bezel
c. hard drive
d. optical drive
e. heat sink fan cover
3. To remove the heat sink assembly:
a. Disconnect the heat sink cable from the system board [1].
b. Loosen the captive screws that secure the heat sink assembly and lift it away from the computer
[2, 3].
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