Dell Vostro 3660/3669 Owner's Manual

Removing the heat sink assembly

Follow the procedure in Before working inside your computer .
Remove the:
1. cover
2. bezel
Open the front panel door.
To remove the heat sink assembly:
1. Disconnect the heat sink assembly cable from the connector on the system board [1].
2. Loosen the captive screws that secure the heat sink assembly to the system board [2, 3, 4, 5].
  - NOTE: Loosen the screws that secure the heat sink to the system board in the order of the callout numbers [2, 3, 4, 5].
3. Lift the heat sink assembly away from the computer [6].