- Notes, cautions, and warnings
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw list
- Major components of Latitude 9430
- Secure Digital (SD) Card
- SIM card tray
- Base cover
- Solid-state drive
- Wireless Wide Area Network (WWAN) Card
- System fan
- Heat sink
- Display assembly
- Battery
- Speakers
- Wireless Local Area Network (WLAN) Antenna module
- I/O daughter board
- Power button with fingerprint reader assembly
- System board
- USH daughter board
- Wireless Wide Area Network (WWAN) Antenna module
- Palm-rest assembly
- Drivers and downloads
- BIOS setup
- Keyboard shortcuts
- Troubleshooting
- Getting help and contacting Dell
Latitude 9430/Latitude 9430 2-in-1 Service Manual
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 the system board and provides a visual representation of the installation procedure.
NOTE For WWAN configurations, transfer the SIM card tray when replacing the system board.
NOTE Replacement system boards are pre-attached with four thermal pads on the underside of the heatsink shielding cover. Before installing the cover back to the system board, make sure the four thermal pads are attached to the correct locations.
Steps
- Align and place the system board on the palm-rest assembly.
- Replace the four (M1.6x2.5) screws that secure the system board to the palm-rest assembly.
- Replace the three (M2x4) screws that secure the USB Type-C bracket to the system board.
- Connect the two WWAN Darwin cables to the connectors on the system board.
- Route the white/gray WWAN main antenna cable and black/gray WWAN antenna cable in the metal clips on the system board.
- Align and place the WWAN Darwin cable bracket on the system board.
- Tighten the single captive screw that secures the WWAN Darwin cable bracket to the system board.
- Connect the system fan cable to the connector on the system board.
- Connect the LED board FPC cable to the connector on the system board.
- Connect the touchpad FPC cable to the connector on the system board.
- Connect the Proximity sensor RF board FPC cable to the connector on the system board.
- Connect the left speaker cable to the connector on the system board.
- Connect the display cable and camera cable to the connector on the system board.
- Connect the display cable, and camera cable to the system board.
- Connect the power button with fingerprint reader FPC cable to the connector on the system board (For the systems shipped with power button with fingerprint reader assembly).
- Connect the USH daughter board FPC cable to the connector on the system board (For the systems shipped with USH daughter board).
- Connect the I/O daughter board FPC cable to the connector on the system board.
Next steps
- Install the battery.
- Install the heat sink.
- Install the WWAN card.
- Install the solid-state drive.
- Install the base cover.
- Install the SIM card tray.
- Install the SD card.
- Follow the procedure in After working inside your computer.
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