Installing the coin cell battery1 Hold the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the connector.2 Press the battery into the connector until it locks into place.3 Close the front panel door.4 Follow the procedure in After working inside your computer.Heat sinkRemoving the heat sink assembly1 Follow the procedure in Before working inside your computer.2 Remove the:a coverb 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 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].c Lift the heat sink assembly away from the computer [6].Installing the heat sink assembly1 Align the screws of the heat sink assembly with the holders on the system board.2 Place the heat sink assembly on the processor.3 Tighten the captive screws to secure the heat sink assembly to the system board.NOTE: Tighten the screws on the system board in the order of the callout numbers as indicated in the removalinstructions.4 Connect the heat sink assembly cable to the connector on the system board.5 Close the front panel door.Removing and installing components 19