Installing The Coin-Cell Battery; Removing The Heatsink Assembly - Dell OptiPlex 3020 Owner's Manual

a) cover
b) front bezel
c) drive cage
3. Press the release latch away from the battery to allow it to pop-up from the socket and then lift the coin-cell battery out of the
computer.

Installing the Coin-Cell Battery

1. Place the coin-cell battery into its slot on the system board.
2. Press the coin-cell battery downward until the release latch springs back into place and secures it.
3. Install the:
a) drive cage
b) front bezel
c) cover
4. Follow the procedures in After Working Inside Your Computer.

Removing the Heatsink Assembly

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the cover
3. Using both hands, push away the two release handles while lifting the fan shroud upward and off the computer.
4. Perform the following steps as shown in the illustration:
a) Press the fan cable [1].
b) Disconnect the fan cable from the system board [2].
c) Loosen the captive screws, lift the heat sink assembly and then remove it from the computer.
22 Disassembly and reassembly