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Inspiron 15 3520 Service Manual

PDF

Installing the system board

Prerequisites

If you are replacing a component, remove the existing component before performing the installation process.

About this task

The following image indicates the connectors on your system board.

System board callout
  1. Fan connector
  2. I/O board FFC connector
  3. eDP connector
  4. DC-in port connector
  5. Keyboard FFC connector
  6. Keyboard-backlight FFC connector
  7. Battery connector
  8. Memory modules
  9. Touchpad FFC connector
  10. Hard drive FFC connector
  11. Wireless connector
  12. Speaker cable connector
  13. Solid-state drive connector

The following images indicate the location of the system board and provide a visual representation of the installation procedure.

Installing the system board

Steps

  1. Place the system board on the palm-rest and keyboard assembly.
  2. Align the screw holes on the system board with the screw holes on the palm-rest assembly.
  3. Replace the single (M2x2) screw that secures the system board to the palm-rest assembly.
  4. Replace the three (M2x3.5) screws that secure the system board to the palm-rest assembly.
  5. Connect the following cables to the system board:
    1. I/O board Flexible Flat cable
    2. Speaker cable
    3. Hard drive Flexible Flat cable (for systems with 2.5-inch hard drive)
    4. Touchpad Flexible Flat cable
    5. Keyboard backlight Flexible Printed cable (for systems with backlit keyboard)
    6. Keyboard Flexible Printed cable
    7. Power adapter port cable
    8. eDP cable
  6. Close the right-display hinge and align the screw holes on the right-display hinge with the screw holes on the system board.
  7. Replace the two (M2.5x5) screws to secure it to the palm-rest assembly.

Next steps

  1. Install the display assembly.
  2. Install the heat sink.
  3. Install the fan.
  4. Install the wireless card.
  5. Install the memory modules.
  6. Install the M.2 2230 solid-state drive or M.2 2280 solid-state drive (whichever applicable).
  7. Install the 3-cell battery or 4-cell battery (whichever applicable).
  8. Install the base cover.
  9. Install the SD card.
  10. Follow the procedure in After working inside your computer.

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