Dell Latitude 7340 Service Manual page 4

Display assembly................................................................................................................................................................36
Removing the display assembly .............................................................................................................................. 36
Installing the display assembly ................................................................................................................................ 38
Speakers.............................................................................................................................................................................. 40
Removing the speakers for ultralight..................................................................................................................... 40
Installing the speakers for ultralight........................................................................................................................ 41
Removing the speakers for mainstream................................................................................................................ 42
Installing the speakers for mainstream...................................................................................................................43
Smart card reader............................................................................................................................................................. 44
Removing the smart card reader ............................................................................................................................44
Installing the smart card reader ..............................................................................................................................45
System board..................................................................................................................................................................... 46
Removing the system board ....................................................................................................................................46
Installing the system board ......................................................................................................................................50
WLAN-antenna module....................................................................................................................................................53
Removing the WLAN-antenna module ..................................................................................................................53
Installing the WLAN-antenna module ....................................................................................................................54
Power button with optional fingerprint reader.......................................................................................................... 55
Removing the power button with optional fingerprint reader..........................................................................55
Installing the power button with optional fingerprint reader............................................................................56
Keyboard..............................................................................................................................................................................57
Removing the keyboard ............................................................................................................................................ 57
Installing the keyboard .............................................................................................................................................. 60
Palm-rest assembly...........................................................................................................................................................62
Removing the palm-rest assembly ......................................................................................................................... 62
Installing the palm-rest assembly ........................................................................................................................... 63
Chapter 3: Drivers and downloads............................................................................................... 65
Chapter 4: BIOS setup.................................................................................................................66
Entering BIOS setup program........................................................................................................................................ 66
Navigation keys..................................................................................................................................................................66
One Time Boot menu........................................................................................................................................................66
System setup options.......................................................................................................................................................67
Updating the BIOS.............................................................................................................................................................77
Updating the BIOS in Windows................................................................................................................................ 77
Updating the BIOS in Linux and Ubuntu................................................................................................................ 78
Updating the BIOS using the USB drive in Windows..........................................................................................78
Updating the BIOS from the F12 One-Time boot menu.....................................................................................78
System and setup password...........................................................................................................................................79
Assigning a system setup password....................................................................................................................... 79
Deleting or changing an existing system setup password.................................................................................80
Clearing CMOS settings.................................................................................................................................................. 80
Clearing BIOS (System Setup) and System passwords........................................................................................... 81
Chapter 5: Troubleshooting.........................................................................................................82
Handling swollen Lithium-ion batteries........................................................................................................................ 82
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................82
Running the SupportAssist Pre-Boot System Performance Check................................................................83
4 Contents