Heat sink assemblyRemoving heat sink assembly1 Follow the procedure in Before working inside your computer.2 Remove the:a Back coverb Front bezel3 Open the Front panel door.4 To remove the heat sink assembly:a Disconnect the heat sink assembly cable from the connector on the system board [1].b Loosen the captive screws(6+/-1) that secure the heat sink assembly to the system board [2].NOTE: Loosen the screws based on the numbers available on the system board.c Lift the heat sink assembly away from the computer [3].36 Disassembly and reassembly

Dell OptiPlex 5055 Tower Owner's Manual