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Inspiron 5391 Service Manual

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Installing the system board

Prerequisites

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

About this task

The following image indicates the location of system board and provides a visual representation of the installation procedure.

Image: Installing the system board

Steps

  1. Slide the ports on the system board into the slots on the palm-rest and keyboard assembly and align the screw holes on the system board with the screw holes on the palm-rest and keyboard assembly.
  2. Replace the screw (M2x4) that secures the system board to palm-rest and keyboard assembly.
  3. Connect the display cable on to the connector on the system board6
  4. Connect the power-adapter port cable to the system board.
  5. Connect the coin-cell battery cable to the system board.
  6. Connect the keyboard backlit cable to the system board and close the latch to secure the cable.
  7. Connect the keyboard cable to the system board and close the latch to secure the cable.
  8. Connect the touchpad cable to the system board and close the latch to secure the cable.
  9. Connect the fingerprint-reader cable to the system board and close the latch to secure the cable.
  10. Connect the speaker cable to the system board.
  11. Connect the I/O-board cable to the system board and close the latch to secure the cable.
  12. Adhere the tape that secures the I/O-board cable to the system board.
  13. Replace the screw (M2x4) screw that secures the right display hinge to the system board.
  14. Replace the screw (M2x4) that secures the display-cable bracket to the system board.
  15. Replace the screw (M2.5x3.5) screw that secures the USB Type-C port bracket to the system board.

Next steps

  1. Install the power-adapter port.
  2. Install the display assembly.
  3. Install the heat sink.
  4. Install the fan.
  5. Install the WLAN card.
  6. Install the M.2 2280 solid-state drive or M.2 2230 solid-state drive, whichever applicable.
  7. Install the battery.
  8. Install the base cover.
  9. Follow the procedure in After working inside your computer.

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