Inspiron 14 Plus 7440 Owner's Manual

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Installing the system board

CAUTION:The information in this section is intended for authorized service technicians only.

Prerequisites

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

About this task

NOTE:If either the system board or the heat sink is replaced, use the thermal grease that is provided in the kit to ensure that thermal conductivity is achieved.
The following image indicates the connectors and M.2 card slots on your system board.
Figure 1. System board callouts
Image: System board callouts
  1. Fan cable connector
  2. Display-assembly cable connector
  3. Power-adapter port cable connector
  4. I/O-board and USB-board cable connector
  5. M.2 wireless-card slot
  6. Touchpad cable connector
  7. Keyboard cable connector
  8. Speaker cables connector
  9. Keyboard-backlight cable connector
  10. Battery cable connector
  11. M.2 solid-state drive slot

The following image(s) indicate the location of the system board and provides a visual representation of the installation procedure.

Figure 2. Installing the system board
Image: Installing the system board

Steps

  1. Place the system board on the palm-rest and keyboard assembly.
  2. Align the ports on the system board with the ports on the palm-rest and keyboard assembly.
  3. Align the screw holes on the system board with the screw holes on the palm-rest and keyboard assembly.
  4. Replace the two screws (M2x1.8) that secure the system board to the palm-rest and keyboard assembly.
  5. Place the Type-C port-bracket on the system board and align the screw holes of the Type-C port-bracket with the screw holes on the system board.
  6. Replace the two screws (M2x4) that secure the Type-C port-bracket to the system board.
    NOTE:Do not secure the two screws (M2x4) into the system board without the Type-C port-bracket.
  7. Connect the power-adapter port cable to its connector on the system board.
  8. Replace the tape that secures the power-adapter port cable to its connector of the system board.
  9. Connect the battery cable to its connector on the system board.
  10. Connect the keyboard cable to its connector on the system board and close the latch.
  11. Connect the touchpad cable to its connector on the system board and close the latch.
  12. Connect the I/O-board and USB-board cable to its connector and secure the latch.

Next steps

  1. Install the display assembly.
  2. Install the heat sink.
    NOTE:If either the system board or the heat sink is replaced, use the thermal grease that is provided in the kit to ensure that thermal conductivity is achieved.
  3. Install the wireless card.
  4. Install the M.2 2230 solid-state drive or the M.2 2280 solid-state drive, whichever is applicable.
  5. Install the battery.
  6. Install the base cover.
  7. Follow the procedure in After working inside your computer.
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