- Notes, cautions, and warnings
- Working inside your computer
- Major components of your computer
- Removing and installing components
- Recommended tools
- Screw list
- Subscriber Identity Module (SIM) card
- Micro Secure Digital (SD) Card
- Base cover
- WLAN card
- WWAN card
- Solid-state drive
- Memory modules
- Battery
- Battery cable
- Assembly inner frame
- LED board
- System fan
- Heat sink
- Removing the heat sink (for computers shipped with integrated graphics card)
- Installing the heat sink (for computers shipped with integrated graphics card)
- Removing the heat sink (for computers shipped with discrete graphics card)
- Installing the heat sink (for computers shipped with discrete graphics card)
- Speakers
- System board
- Power-button board
- Smart card reader
- Keyboard assembly
- Keyboard bracket
- Display assembly
- Display bezel
- Display panel
- Camera/microphone module
- eDP/display cable
- Sensor board
- Display hinges
- Display back cover
- Dummy SIM-card slot filler
- Palm-rest assembly
- Software
- BIOS setup
- Troubleshooting
- Getting help and contacting Dell
Latitude 5520 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.
Steps
- Flip the system board and connect the coin-cell battery cable to the connector on the system board.
- Flip over and slide the system board to make the USB Type-C connector to toe-in to the hinge saddle and align the screw holes on the system board with the screw holes on the palm-rest assembly and keyboard assembly.
- Replace the three screws (M2x3) to secure the system board to the palm-rest assembly and keyboard assembly.
- Route the coin-cell battery cable through the routing guide on palm-rest assembly and adhere the coin-cell battery on the palm-rest assembly.
- Connect the finger print cable to the connector on the system board.
- Connect the sensor-board cable to the connector on the system board and adhere the tape to secure the cable to the system board.
- Align and place the USB Type-C bracket on the system board.
- Replace the three screws (M2x4) that secure the USB Type-C bracket to the system board.
- Route the display and eDP cable through the routing guide on the system board.
- Connect the eDP cable to the connector on the system board.
- Connect the display cable to the connector on the system board.
- Adhere the tape that secures the display cable to the system board.
- Align the screw holes on the eDP cable bracket with the screw holes on the system board.
- Replace the two screws (M2x3) that secure the eDP cable bracket to the system board.
- Connect the USH board cable to the system board and close the latch to secure the cable to the system board.
- Connect the LED board cable to the system board and close the latch to secure the cable to the system board.
- Connect the clickpad cable to the system board and close the latch to secure the cable to the system board.
Next steps
- Install the assembly inner frame.
- Install the system fan.
- Install the battery.
- Install the heat sink.
- Install the WWAN card.
- Install the WLAN card.
- Install the memory module.
- Install the solid-state drive.
- Install the base cover.
- Install the microSD card.
- Install the SIM card.
- Follow the procedure in After working inside your computer.
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