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Latitude 3520 Service Manual

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Removing the coin-cell battery

Prerequisites

  1. Follow the procedure in before working inside your computer.
  2. Remove the microSD-card.
  3. Remove the SIM card tray for 4G LTE enabled systems.
  4. Enter the service mode.
  5. Remove the base cover.
  6. Remove the WWAN card for 4G LTE enabled systems.
  7. Remove the hard-disk drive for systems shipped with hard-disk drive.

About this task

NOTE:If the CMOS battery is disconnected from system board for service, there will be a delay during system boot as the system undergoes RTC battery reset.

The following image indicates the location of the coin-cell battery and provides a visual representation of the removal procedure.

Image: Removing the screws that secure the base cover to the palm-rest and keyboard assembly

Steps

  1. Open the mylar sheet that covers the coin-cell battery cable.
  2. Disconnect the coin-cell battery cable from the connector on the I/O board.
  3. Lift and remove the coin-cell battery from the palmrest assembly.

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