Removing the power-supply unit.............................................................................................................................33
Installing the power-supply unit...............................................................................................................................35
Removing the heatsink assembly.............................................................................................................................37
Installing the heatsink assembly...............................................................................................................................38
Removing the processor............................................................................................................................................39
Installing the processor.............................................................................................................................................. 40
System board layout................................................................................................................................................... 42
Removing the system board..................................................................................................................................... 42
Installing the system board....................................................................................................................................... 46
Boot Sequence...................................................................................................................................................................52
System setup options.......................................................................................................................................................52
Updating the BIOS.............................................................................................................................................................61
Updating the BIOS in Windows.................................................................................................................................61
Updating the BIOS using the USB drive in Windows..........................................................................................62
Updating the BIOS from the F12 One-Time boot menu.....................................................................................62
Assigning a system setup password....................................................................................................................... 63
Deleting or changing an existing system setup password.................................................................................64
Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0...............................................................65
System diagnostic lights..................................................................................................................................................66
Diagnostic error messages.............................................................................................................................................. 67
Real-Time Clock (RTC Reset)........................................................................................................................................70
Updating the BIOS in Windows......................................................................................................................................70
Updating the BIOS using the USB drive in Windows................................................................................................ 71
Backup media and recovery options..............................................................................................................................71
WiFi power cycle................................................................................................................................................................ 71
Drain residual flea power (perform hard reset).......................................................................................................... 71
4
Contents
Summary of Contents for Vostro 5890
Page 1: ...Vostro 5890 Service Manual Regulatory Model D28M Regulatory Type D28M004 August 2021 Rev A01 ...
Page 36: ...36 Disassembly and reassembly ...
Page 44: ...44 Disassembly and reassembly ...
Page 45: ...Disassembly and reassembly 45 ...
Page 47: ...Disassembly and reassembly 47 ...
Page 48: ...48 Disassembly and reassembly ...
Page 49: ...Disassembly and reassembly 49 ...