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. Align and place the system board into the slot on the palmrest assembly.
2. Install the two (M2x2) screws to secure the system board in place.
3. Align and place the type-c bracket on the system board.
4. Install the two (M2x5) screws to secure the type-c bracket in place.
5. Connect the display cable and I/O cable to the connector on the system board, close the latches and affix the adhesive
tapes.
6. Connect the touchpad cable, keyboard cable, and USB cable to the connector on the system board and close the latches.
7. Connect the speaker cable, power adapter port cable, hard-disk drive cable, and system fan cable to the connector on the
system board.
8. For 4G LTE enabled systems, affix the WWAN I/O board cable on the palmrest assembly.
9. Press the hinge in downward direction toward the palmrest assembly.
10. Install the two (M2.5x6) and the (M2.5x4) screws to secure the hinge to the palmrest assembly.
Next steps
1. Install the heatsink assembly.
2. Install the WLAN card.
3. Install the hard-disk drive for systems shipped with hard-disk drive.
4. Install the M.2 SSD.
5. Install the memory module.
6. Install the battery.
7. Install the base cover.
8. Install the SIM card tray for 4G LTE enabled systems.
9. Install the microSD-card.
10. Follow the procedure in after working inside your computer.
Removing and installing components
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