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
3. Remove the SIM card tray for 4G LTE enabled systems.
4. Enter the service mode.
5. Remove the base cover.
About this task
The following image indicates the location of the M.2 solid-state drive conversion bracket and provides a visual representation
of the removal procedure.
NOTE: The following is applicable only for systems shipped with discrete graphic card.
Steps
1. Remove the two (M2x3) screws that secures the solid-state drive conversion bracket to the system board.
2. Lift and remove the solid-state drive conversion bracket from the solid-state drive slot on the system board.
Installing the M.2 solid-state drive conversion bracket
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 M.2 solid-state drive conversion bracket and provides a visual representation
of the installation procedure.
NOTE: The following is applicable only for systems shipped with discrete graphic card.
32 Removing and installing components