Dell OptiPlex 9020 (Mid 2013) - Manual (Page 25)

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 Heat Sink 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. Disconnect the fan cable from the system board. Loosen the captive screws, lift the heat sink assembly and then
remove it from the computer.
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