Dell Latitude 5520 - Page 5

Installing the eDP/display cable...............................................................................................................................84
Sensor board...................................................................................................................................................................... 85
Removing the sensor board...................................................................................................................................... 85
Installing the sensor board........................................................................................................................................ 86
Display hinges.....................................................................................................................................................................87
Removing the display hinges.....................................................................................................................................87
Installing the display hinges.......................................................................................................................................88
Display back cover............................................................................................................................................................ 90
Removing the display back cover............................................................................................................................90
Installing the display back cover..............................................................................................................................90
Dummy SIM-card slot filler.............................................................................................................................................. 91
Removing the dummy SIM-card slot filler..............................................................................................................91
Installing the dummy SIM-card slot filler............................................................................................................... 92
Palm-rest assembly...........................................................................................................................................................93
Removing the palm-rest assembly.......................................................................................................................... 93
Installing the palm-rest assembly............................................................................................................................ 94
Chapter 4: Software....................................................................................................................96
Operating system.............................................................................................................................................................. 96
Downloading the drivers..................................................................................................................................................96
Chapter 5: BIOS setup.................................................................................................................97
BIOS overview....................................................................................................................................................................97
Entering BIOS setup program........................................................................................................................................ 97
Navigation keys..................................................................................................................................................................97
One time boot menu.........................................................................................................................................................98
System setup options.......................................................................................................................................................98
Updating the BIOS.......................................................................................................................................................... 108
Updating the BIOS in Windows.............................................................................................................................. 108
Updating the BIOS in Linux and Ubuntu.............................................................................................................. 109
Updating the BIOS using the USB drive in Windows........................................................................................ 109
Updating the BIOS from the F12 One-Time boot menu...................................................................................109
System and setup password..........................................................................................................................................110
Assigning a system setup password...................................................................................................................... 110
Deleting or changing an existing system setup password.................................................................................111
Clearing BIOS (System Setup) and System passwords.......................................................................................... 111
Chapter 6: Troubleshooting........................................................................................................ 112
Handling swollen Lithium-ion batteries....................................................................................................................... 112
Dell SupportAssist Pre-boot System Performance Check diagnostics...............................................................113
Running the SupportAssist Pre-Boot System Performance Check............................................................... 113
Built-in self-test (BIST).................................................................................................................................................. 113
M-BIST.......................................................................................................................................................................... 113
LCD Power rail test (L-BIST).................................................................................................................................. 114
LCD Built-in Self Test (BIST).................................................................................................................................. 114
System diagnostic lights................................................................................................................................................. 115
Recovering the operating system.................................................................................................................................116
Backup media and recovery options............................................................................................................................116
WiFi power cycle.............................................................................................................................................................. 116
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