Skip to main content
Sign Out

Welcome to Dell

My Account
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Enjoy members-only rewards and discounts
  • Create and access a list of your products
  • Manage your Dell EMC sites, products, and product-level contacts using Company Administration.
Sign In Create an Account Premier Sign In Partner Program Sign In
Contact Us

Your Dell.com Carts

Latitude 3420 Service Manual for computers with discrete graphics

PDF

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 M.2 SSD.
  7. Remove the M.2 SSD thermal plate.
  8. Remove the M.2 SSD conversion bracket.
  9. 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. Disconnect the coin-cell battery cable from the connector on the I/O board.
  2. Lift and remove the coin-cell battery from the palmrest assembly.
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please select whether the article was helpful or not.
  Comments cannot contain these special characters: <>()\