Dell Vostro 2420 (Mid 2012) - Manual (Page 21)

Installing the Coin-Cell Battery
1. Install the coin-cell battery to the coin-cell battery compartment.
2. Connect the coin-cell battery cable to the system board.
3. Install:
a) palmrest
b) keyboard
c) battery
4. Follow the procedures in After Working Inside Your Computer .
Removing the Audio Board
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove:
a) battery
b) keyboard
c) palmrest
3. Disconnect the WLAN card antennae hindering access to the audio-board cable.
4. Lift up and remove the coin-cell battery from its compartment.
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