Dell Pro 14 PC14250 Owner's Manual

Installing the system board (For computers shipped with smart card reader)

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

Prerequisites

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

About this task

The following image indicates the connectors on your system board.
Figure 1. System-board connectors
Image: System-board connectors
  1. Fan-cable connector (FAN1)
  2. Display-cable connector (LCD1)
  3. DC-in port connector (DCIN1)
  4. Speaker-cable connector (SPK1)
  5. Memory-module connectors (DM1 AND DM2)
  6. Battery-cable connector (BATT1)
  7. Wireless-card connector (WLAN1)
  8. Touchpad-cable connector (TPAD1)
  9. USH board FPC connector
  10. SSD slot (SSD1)
  11. vPro cable connector
  12. I/O-board cable connector (IO)
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
Figure 2. Installing the system board
Image: Installing the system board
Figure 3. Installing the system board
Image: Installing the system board

Steps

  1. Align the screw holes on the system board with the screw holes on the palm-rest assembly.
  2. Replace the three screws (M2x3) that secure the system board to the palm-rest assembly.
  3. Replace the two screws (M2x5) that secure the Type-C module to the system board.
  4. Connect the following cables to the respective connectors on the system board:
    • I/O-board cable
    • vPro cable
    • USH board FPC
    • Touchpad cable
    • Speaker cable
    • Display cable (EDP)
    • Power-adapter port cable
  5. Gently press the left display-hinge in a downward direction towards the system board.
  6. Replace the two screws (M2.5x5) that secure the left display-hinge to the palm-rest assembly.
    NOTE:When replacing the system board, ensure that the USB Type-C module is removed and transferred to the replacement system board.

Next steps

  1. Install the display assembly.
  2. Install the heat sink.
  3. Install the fan.
  4. Install the wireless card.
  5. Install the SSD.
  6. Install the memory module.
  7. Install the battery.
  8. Install the base cover.
  9. Follow the procedure in After working inside your computer.

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