Latitude 7420/Latitude 7420 2-in-1 Service Manual

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Removing the keyboard

Prerequisites

  1. Follow the procedure in before working inside your computer.
  2. Remove the microSD card.
  3. Remove the base cover.
  4. Remove the solid-state drive.
  5. Remove the WWAN card.
  6. Remove the battery.
  7. Remove the heatsink assembly.
  8. Remove the audio board.
  9. Remove the system board.
  10. Remove the I/O board.

About this task

The following images indicate the location of the keyboard and provide a visual representation of the removal procedure.

Removing the keyboard

Separate the keyboard from keyboard support plate

Steps

  1. Peel the LED board FFC, USH board FFC, touchpad FFC and SmartCard reader FFC from the back of the keyboard.
  2. Disconnect the keyboard FPC and keyboard backlight FPC from the touchpad module.
  3. Remove the 26 (M1.6x1.7) screws that secure the keyboard assembly to the computer.
  4. Carefully lift the keyboard assembly to remove it from the computer.
  5. Remove the two (M2x2) screws securing the keyboard to the keyboard support plate.
  6. Separate the keyboard from the keyboard support plate.
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