Dell 14 Plus 2-in-1 DB04255 Owner's Manual

PDF

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

The following image indicates the connectors on your system board.
Figure 1. Connectors on the system board
Image: Connectors on the system board
  1. Fan-cable connector (FAN)
  2. Display-cable connector (LCD)
  3. Keyboard-backlight cable connector (KBBL)
  4. Battery-cable connector (BATT)
  5. Keyboard-cable connector (KB)
  6. Touchpad-cable connector (TP)
  7. Speaker-cable connector (SPK)
  8. Wireless-card connector (WLAN)
  9. M.2 solid state drive connector (SSD)
  10. I/O-board cable connector (IOBD)

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

Figure 2. Installing the system board
Installing the system board
Figure 3. Connecting the cables to the system board
Connecting the cables to the system board
Figure 4. Connecting the screws
Connecting the screws

Steps

  1. Align the screw holes on the system board with the screw holes on the palm-rest and keyboard assembly.
    NOTE:Place the system board carefully at an angle to clear the positioning pin so that it does not damage the system board-printed circuit board (PCB).
    Figure 5. System board pin
    System board pin
    Figure 6. System board pin
    System board pin
  2. Replace the two screws (M2x1.8) that secure the system board to the palm-rest and keyboard assembly.
  3. Connect the fan cable to the fan cable connector (FAN) on the system board and close the latch.
  4. Connect the I/O-board cable to the I/O-board cable connector (IOBD) on the system board.
  5. Connect the speaker cable to the speaker-cable connector (SPK) on the speaker board.
  6. Connect the touchpad cable to the touchpad-cable connector (TP) on the system board and close the latch.
  7. Connect the keyboard cable to the keyboard-cable connector (KB) on the system board and close the latch.
  8. Connect the keyboard-backlight cable to the keyboard-backlight cable connector (KBBL) on the system board and close the latch.
  9. Connect the display cable to the display-cable connector (LCD) on the system board.
  10. Align the screw holes on the USB Type-C bracket to the screw holes on the system board.
  11. Replace the two screws (M2x4) that secure the USB Type-C bracket to the system board.
  12. Align the left display hinge screws with the screw holes on the palm-rest.
  13. Replace the three screws (M2.5x4) that secure the left display hinge to the palm-rest and keyboard assembly.

Next steps

  1. Install the display assembly.
  2. Install the USB Type-C bracket.
  3. Install the heat sink.
  4. Install the M.2 2230 solid-state drive.
  5. Install the wireless card.
  6. Install the battery.
  7. Install the base cover.
  8. Follow the procedure in After working inside your computer.

Rate this content

Accurate
Useful
Easy to understand
Was this article helpful?
0/3000 characters
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please select whether the article was helpful or not.
  Comments cannot contain these special characters: <>()\