Dell Latitude 7400 2-in-1 Service Manual

Assigning a system setup password...................................................................................................................... 110
Deleting or changing an existing system setup password................................................................................110
Clearing BIOS (System Setup) and System passwords.......................................................................................... 111
ExpressSign-in................................................................................................................................................................... 111
Chapter 6: Troubleshooting........................................................................................................ 115
Handling swollen Lithium-ion batteries....................................................................................................................... 115
Enhanced Pre-Boot System Assessment (ePSA) diagnostics.............................................................................. 116
Running the ePSA diagnostics................................................................................................................................ 116
Built-in self-test (BIST).................................................................................................................................................. 116
M-BIST.......................................................................................................................................................................... 116
LCD Power rail test (L-BIST).................................................................................................................................. 117
LCD Built-in Self Test (BIST)...................................................................................................................................117
System diagnostic lights................................................................................................................................................. 118
Recovering the operating system.................................................................................................................................118
Real-Time Clock (RTC Reset).......................................................................................................................................119
Backup media and recovery options............................................................................................................................119
WiFi power cycle.............................................................................................................................................................. 119
Drain residual flea power (perform hard reset)........................................................................................................ 119
Chapter 7: Getting help.............................................................................................................. 121
Contacting Dell..................................................................................................................................................................121
Contents
5

Dell Latitude 7400 2-in-1 Specifications

General

Storage	Up to 1TB PCIe NVMe SSD
Graphics	Intel UHD Graphics 620
Operating System	Windows 10 Pro
Processor	8th Generation Intel Core i5/i7
Display	14.0-inch FHD (1920 x 1080) Touchscreen
RAM	Up to 16GB
Battery	4-cell 52 Whr Integrated Battery
Weight	Starting at 1.36 kg (3.0 lbs)
Ports	1 x HDMI, 1 x microSD card reader, 1 x headphone/microphone combo jack
Wireless	Bluetooth 5.0
Dimensions	0.59 inches (14.89 mm)