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Dell Latitude 7400 2-in-1 Service Manual
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Notes, cautions, and warnings
Working on your computer
Safety instructions
Turning off your computer — Windows 10
Before working inside your computer
After working inside your computer
Technology and components
USB features
USB Type-C
HDMI 1.4a
Corning Gorilla Glass
Major components of your system
Removing and installing components
Recommended tools
Screw List
SD memory card
Removing the SD memory card
Installing the SD memory card
SIM card tray
Removing the SIM card tray
Installing the SIM card tray
Base cover
Removing the base cover
Installing the base cover
Battery cable
Disconnecting the battery cable
Connecting the battery cable
Coin cell
Removing the coin cell battery
Installing the coin-cell battery
Solid state drive
Removing the solid state drive
Installing the solid state drive
WLAN card
Removing the WLAN card
Installing the WLAN card
WWAN card
Removing the WWAN card
Installing the WWAN card
Fan
Removing the fan
Installing the fan
Speakers
Removing the speakers
Installing the speakers
Heatsink
Removing the heatsink
Installing the heatsink
Display assembly
Removing the display assembly
Installing the display assembly
Battery
Lithium-ion battery precautions
Removing the battery
Installing the battery
System board
Removing the system board
Installing the system board
Keyboard
Removing the keyboard
Installing the keyboard
Palmrest assembly
System setup
BIOS overview
Entering BIOS setup program
Boot menu
Navigation keys
One time boot menu
Boot Sequence
System setup options
General options
System configuration
Video screen options
Security
Secure boot
Intel Software Guard Extensions options
Performance
Power management
Post behavior
Manageability
Virtualization support
Wireless options
Maintenance
System logs
Updating the BIOS
Updating the BIOS in Windows
Updating the BIOS in Linux and Ubuntu
Updating the BIOS using the USB drive in Windows
Updating the BIOS from the F12 One-Time boot menu
System and setup password
Assigning a system setup password
Deleting or changing an existing system setup password
Clearing BIOS (System Setup) and System passwords
ExpressSign-in
Troubleshooting
Handling swollen Lithium-ion batteries
Enhanced Pre-Boot System Assessment (ePSA) diagnostics
Running the ePSA diagnostics
Built-in self-test (BIST)
M-BIST
LCD Power rail test (L-BIST)
LCD Built-in Self Test (BIST)
System diagnostic lights
Recovering the operating system
Real-Time Clock (RTC Reset)
Backup media and recovery options
WiFi power cycle
Drain residual flea power (perform hard reset)
Getting help
Contacting Dell
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