Service Manual
Table Of Contents
- Latitude 3520 Service Manual
- 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
- Battery
- Memory module
- M.2 solid-state drive thermal plate
- M.2 solid-state drive conversion bracket
- M.2 solid-state drive
- Hard-disk drive
- WLAN card
- WWAN card
- I/O cable
- Display assembly
- System fan
- Heatsink assembly
- Power adapter port
- Coin-cell battery
- USB cable
- Ethernet port
- I/O board
- Power-button board
- System board
- Speakers
- Touchpad
- WWAN I/O board
- Palmrest assembly
- Display bezel
- Display panel
- Camera
- Display cable
- Display back-cover
- Drivers and downloads
- System setup
- Troubleshooting
- Built-in self-test (BIST)
- LCD Built-in Self Test (BIST)
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Diagnostic LED behavior
- Diagnostic error messages
- System error messages
- Recovering the operating system
- Real-Time Clock (RTC Reset)
- Flashing the BIOS
- Backup media and recovery options
- WiFi power cycle
- Flea power release
- Getting help and contacting Dell
Table 3. Antenna cable guide
Cable color Connector
White cable (Main) White triangle (△) on the WLAN module of the system
board
Black cable (Aux) Solid triangle (▲) on the WLAN module of the system board
2. Align the notch on the WWAN card with the tab on the WWAN card slot.
3. Slide the WWAN card at an angle into the WWAN card slot.
4. Align and place the WLAN card bracket on the WLAN card.
5. Install the screw (M2x3) to secure the WLAN card bracket on the WLAN card to the system board.
Next steps
1. Install the base cover.
2. Exit the service mode
3. Install the SIM card tray for 4G LTE enabled systems.
4. Install the microSD-card.
5. Follow the procedure in after working inside your computer.
I/O cable
Removing the I/O cable
Prerequisites
1. Follow the procedure in before working inside your computer.
2. Remove the SIM card tray for 4G LTE enabled systems.
3. Enter the service mode.
4. Remove the base cover.
About this task
The following image indicates the location of the I/O cable and provides a visual representation of the removal procedure.
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Removing and installing components