Removing the power-supply unit
.............................................................................................................................
69
Installing the power-supply unit
................................................................................................................................
71
Removing the power-supply unit (For systems with powered GPU)
.............................................................
73
Installing the power-supply unit (For systems with powered GPU)
...............................................................
76
Intrusion switch
..................................................................................................................................................................
79
Removing the intrusion switch
.................................................................................................................................
79
Installing the intrusion switch
...................................................................................................................................
80
Optional I/O modules (Type C/ HDMI/VGA/DP/Serial)
........................................................................................
80
Removing optional I/O modules (Type C/ HDMI/VGA/DP/Serial)
................................................................
80
Installing optional I/O modules (Type-C/HDMI/VGA/DP/Serial)
...................................................................
81
System board
.....................................................................................................................................................................
85
Removing the system board
.....................................................................................................................................
85
Installing the system board
.......................................................................................................................................
88
Chapter 5: Troubleshooting
.........................................................................................................
93
Dell SupportAssist Pre-boot System Performance Check diagnostics
................................................................
93
Running the SupportAssist Pre-Boot System Performance Check
................................................................
93
Power-Supply Unit Built-in Self-Test
..........................................................................................................................
93
Diagnostic LED behavior
..................................................................................................................................................
94
Recovering the operating system
.................................................................................................................................
95
Real-Time Clock (RTC Reset)
........................................................................................................................................
95
Backup media and recovery options
.............................................................................................................................
95
Diagnostic error messages
..............................................................................................................................................
95
System error messages
...................................................................................................................................................
98
WiFi power cycle
...............................................................................................................................................................
99
Contents
5