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
Steps
1. Remove the two (M2.5x6) and the (M2.5x4) screws that secure the hinge to the palmrest assembly.
2. Lift the hinge in upward direction away from the palmrest assembly.
3. For 4G LTE enabled systems, peel the WWAN I/O board cable from the palmrest assembly.
4. Disconnect the speaker cable, power adapter port cable, hard-disk drive cable, and system fan cable from the connector on
the system board.
5. Open the latch and disconnect the touchpad cable, keyboard cable, and USB cable from the connector on the system board.
6. Peel the adhesive, open the latch, and disconnect the display cable and I/O cable from the connector on the system board.
7. Remove the two (M2x5) screws that secure the type-c bracket in place.
8. Lift and remove the type-c bracket from the system board.
9. Remove the two (M2x2) screws that secure the system board in place.
10. Lift and remove the system board from the palmrest assembly.
Installing the system board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
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Removing and installing components