- Notes, cautions, and warnings
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw List
- Major components of your system
- MicroSD-card
- SIM card tray
- Base cover
- Battery cable
- Memory module
- M.2 solid state drive
- M.2 solid-state drive conversion bracket
- M.2 solid-state drive conversion plate
- Hard-disk drive assembly
- WLAN card
- Wireless Wide Area Network (WWAN) card
- System fan
- Battery
- I/O cable
- Display assembly
- Heat sink
- Removing the heatsink assembly - for computers with discrete graphics card
- Installing the heatsink assembly - for computers with discrete graphics card
- Removing the heatsink assembly - for computers with integrated graphics card
- Installing the heatsink assembly - for computers with integrated graphics card
- Power adapter port
- Coin-cell battery
- USB cable
- Ethernet port
- I/O board
- Power button
- System board
- Speakers
- Touchpad
- WWAN I/O board
- Palmrest assembly
- Display bezel
- Display panel
- Camera
- Display cable
- Display back-cover
- Drivers and downloads
- BIOS Setup
- Troubleshooting
- Handling swollen rechargeable Li-ion batteries
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Built-in self-test (BIST)
- System-diagnostic lights
- Recovering the operating system
- Real-Time Clock (RTC Reset)
- Backup media and recovery options
- Wi-Fi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell Technologies
Latitude 3520 Service Manual
Installing the WWAN card
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 WWAN card and provides a visual representation of the installation procedure.
NOTE:The following steps are applicable only for 4G LTE enabled systems.
Steps
- Connect the two antenna cables to the connectors on the WWAN card.
NOTE:The antenna cable connectors are fragile and utmost care should be taken while replacing them.
Table 1. Antenna cable guideAntenna cable guide Cable color Connector White cable (Main) White triangle (△) on the WWAN module of the system board Black cable (Aux) Solid triangle (▲) on the WWAN module of the system board - Align the notch on the WWAN card with the tab on the WWAN card slot.
- Slide the WWAN card at an angle into the WWAN card slot.
- Align and place the WWAN card bracket on the WWAN card.
- Install the screw (M2x3) to secure the WWAN card bracket on the WWAN card to the system board.
- Close the mylar sheet to cover the WWAN card.
Next steps
- Install the base cover.
- Exit the service mode
- Install the SIM card tray for 4G LTE enabled systems.
- Install the microSD-card.
- Follow the procedure in after working inside your computer.
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