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Inspiron 3505 Service Manual

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Removing the system board (Realtek audio controller)

Prerequisites

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

About this task

NOTE:The following procedure only applies to computers shipped with a Realtek ALC3204 audio controller.

The following images indicate the connectors on the system board.

Image: System board cables

  1. Power-adapter port cable
  2. Speaker cable
  3. Keyboard cable
  4. Keyboard-backlight cable
  5. Touchpad cable
  6. Battery cable
  7. Hard-drive cable
  8. I/O-board cable
  9. Fingerprint-reader cable
  10. Power-button cable

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

Image: Removing the system board

Steps

  1. Disconnect the power-adapter port cable from the system board.
  2. Disconnect the fan cable from the system board.
  3. Open the latch and disconnect the fingerprint-reader cable from the system board, if applicable.
  4. Open the latch and disconnect the I/O-board cable from the system board.
  5. Open the latch and disconnect the hard-drive cable from the system board, if applicable.
  6. Open the latch and disconnect the touchpad cable from the system board.
  7. Open the latch and disconnect the keyboard-backlight cable from the system board, if applicable.
  8. Open the latch and disconnect the keyboard cable from the system board.
  9. Disconnect the speaker cable from the system board.
  10. Remove the screw (M2x4) that secures the system board to the palm-rest and keyboard assembly.
  11. Lift the system board off the palm-rest and keyboard assembly.

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