Service Manual
Table Of Contents
- Latitude 3420 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
2. Lift the hinge in upward direction away from the palmrest assembly.
3. Remove the (M2x5) screw that secures the ethernet on the I/O board.
4. Lift and remove the ethernet from the I/O board.
Installing the ethernet port
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 ethernet port and provides a visual representation of the installation procedure.
Steps
1. Align and place the ethernet on the I/O board.
2. Install the (M2x5) screw to secure the ethernet on the I/O board.
3. Press the hinge in downward direction toward the palmrest assembly.
4. Install the (M2.5x4) and two (M2.5x6) screws to secure the hinge bracket on the palmrest assembly.
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.
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Removing and installing components