Dell Latitude 3390 2-in-1 Owner's Manual

Removing the power and volume control board

1. Follow the procedure in Before working inside your computer.
2. Remove the:
   1. base cover
   2. battery
   3. coin cell battery
3. To remove the power and volume control board:
   1. Disconnect the power cable from the connector on the system board [1].
      CAUTION: Ensure that you remove the coin cell battery connector on the system board, to avoid damage to the battery cable.
   2. Peel the adhesive tape [2].
   3. Release the volume control board cable from the routing clips .
   4. Remove the M2x3 screw (1) that secures the power and volume control board to the laptop[3].
   5. Remove the plastic power button from the chassis.
   6. Lift the power and volume control board away from the laptop[4].
   
4. To remove the power button:
   1. Undo the power button from the retention hooks on the palmrest [1].
   2. Lift and remove the power button from the palmrest assembly [2].