Dell Latitude 3140 User Manual

Chapter 1: Working inside your computer...................................................................................... 5
Safety instructions.............................................................................................................................................................. 5
Before working inside your computer.......................................................................................................................5
Electrostatic discharge—ESD protection............................................................................................................... 6
ESD field service kit ..................................................................................................................................................... 6
Transporting sensitive components.......................................................................................................................... 7
Entering Service Mode................................................................................................................................................. 7
After working inside your computer.......................................................................................................................... 7
Exiting Service Mode.................................................................................................................................................... 8
BitLocker..........................................................................................................................................................................8
Chapter 2: Removing and installing components........................................................................... 9
Recommended tools........................................................................................................................................................... 9
Screw list............................................................................................................................................................................... 9
Major components of Latitude 3140/Latitude 3140 2-in-1...................................................................................... 10
Disassembly and reassembly .......................................................................................................................................... 12
Palm-rest and keyboard..............................................................................................................................................12
Subscriber Identification Module (SIM) card........................................................................................................ 17
Wireless Wide Area Network (WWAN) card......................................................................................................... 18
M.2 solid-state drive...................................................................................................................................................20
Speakers........................................................................................................................................................................ 22
Coin-cell battery.......................................................................................................................................................... 25
Audio board................................................................................................................................................................... 27
Battery........................................................................................................................................................................... 28
Power-adapter port.................................................................................................................................................... 33
World-facing camera (2-in-1)...................................................................................................................................35
Heat sink........................................................................................................................................................................ 37
System board............................................................................................................................................................... 39
Display assembly..........................................................................................................................................................52
Touch-panel assembly (2-in-1)................................................................................................................................ 60
Display bezel (Laptop)............................................................................................................................................... 65
Display panel................................................................................................................................................................. 69
User-facing camera.....................................................................................................................................................72
Display cable................................................................................................................................................................. 73
Display hinges............................................................................................................................................................... 75
Display back-cover...................................................................................................................................................... 79
Base-cover assembly..................................................................................................................................................80
Chapter 3: Drivers and downloads............................................................................................... 82
Chapter 4: System setup............................................................................................................. 83
Entering BIOS setup program........................................................................................................................................ 83
Navigation keys..................................................................................................................................................................83
Boot Sequence...................................................................................................................................................................83
Contents
Contents 3

Dell Latitude 3140 Specifications

General

Graphics	Intel UHD Graphics
Processor	Intel Celeron N4500, Intel Pentium Silver N6000
Display	11.6-inch HD (1366 x 768) Anti-Glare
RAM	4GB, 8GB DDR4
Operating System	Windows 10 Pro, Windows 11 Pro, Ubuntu
Battery	3-cell 42Whr
Wireless	Wi-Fi 6, Bluetooth 5.1
Ports	HDMI 1.4
Security	TPM 2.0
Storage	128GB eMMC, 256GB SSD