Dell Precision 5520 Owner's Manual page 4

Installing the Heatsink................................................................................................................................................ 26
Power connector port......................................................................................................................................................26
Removing the DC-in Connector...............................................................................................................................26
Installing the DC-in Adapter Port............................................................................................................................ 27
Antenna cover.................................................................................................................................................................... 27
Removing the antenna cover....................................................................................................................................27
Installing the antenna cover......................................................................................................................................28
Display Assembly............................................................................................................................................................... 29
Removing the Display Assembly.............................................................................................................................. 29
Installing the Display Assembly................................................................................................................................ 30
System board..................................................................................................................................................................... 30
Removing the System Board.................................................................................................................................... 30
Installing the System Board...................................................................................................................................... 32
Palm rest............................................................................................................................................................................. 33
Removing the Palmrest Assembly........................................................................................................................... 33
Installing the Palm rest Assembly............................................................................................................................ 33
Chapter 4: System Setup............................................................................................................ 35
BIOS overview................................................................................................................................................................... 35
Entering BIOS setup program........................................................................................................................................ 35
Navigation keys..................................................................................................................................................................35
One time boot menu......................................................................................................................................................... 35
System Setup Options..................................................................................................................................................... 36
Updating the BIOS............................................................................................................................................................ 40
Updating the BIOS in Windows................................................................................................................................40
Updating the BIOS in Linux and Ubuntu................................................................................................................ 40
Updating the BIOS using the USB drive in Windows..........................................................................................40
Updating the BIOS from the F12 One-Time boot menu..................................................................................... 41
System and setup password...........................................................................................................................................42
Assigning a system setup password....................................................................................................................... 42
Deleting or changing an existing system setup password.................................................................................42
Clearing CMOS settings.................................................................................................................................................. 43
Clearing BIOS (System Setup) and System passwords.......................................................................................... 43
Chapter 5: Troubleshooting......................................................................................................... 44
Handling swollen Lithium-ion batteries........................................................................................................................ 44
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................44
Running the SupportAssist Pre-Boot System Performance Check................................................................45
Built-in self-test (BIST)................................................................................................................................................... 45
M-BIST...........................................................................................................................................................................45
LCD Power rail test (L-BIST)................................................................................................................................... 46
LCD Built-in Self Test (BIST)................................................................................................................................... 46
Beep codes......................................................................................................................................................................... 46
Recovering the operating system................................................................................................................................. 46
Real-Time Clock (RTC Reset)........................................................................................................................................ 47
Backup media and recovery options............................................................................................................................. 47
WiFi power cycle................................................................................................................................................................47
Drain residual flea power (perform hard reset)......................................................................................................... 47
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