Installing The Heat Sink Fan Cover; Removing The Heat Sink Assembly - Dell Precision Tower 3420 Owner's Manual

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

Removing the heat sink assembly

1. Follow the procedure in
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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After Working Inside Your
Before Working Inside Your
Computer.
Computer.