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Vostro 3405 Service Manual

PDF

Removing the system board

Prerequisites

  1. Follow the procedure in Before working inside your computer.
  2. Remove the SD card.
  3. Remove the base cover.
  4. Remove the battery.
  5. Remove the M.2 2230 solid-state drive.
  6. Remove the M.2 2280 solid-state drive.
  7. Remove the memory modules.
  8. Remove the fan.
  9. Remove the heat sink.
  10. Remove the wireless card.
  11. Remove the display assembly.

About this task

The following images indicate the location of the system board and provides a visual representation of the removal procedure.

Removing the system board

Removing the system board

Steps

  1. Remove the two (M2.5x5) screws from the right hinge.
  2. Fold the right hinge up.
  3. Disconnect the following cables from the system board:
    1. Speaker cable
    2. Keyboard FFC
    3. Power adapter port cable
    4. Keyboard backlight FFC
    5. Touchpad FFC
    6. Hard drive FFC
    7. IO board FFC
    8. fingerprint reader FFC
    9. power button FFC from the system board
  4. Remove the single (M2x4) screw that secures the system board to the palmrest.
  5. Carefully lift the system board away from the chassis.
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