Dell OptiPlex 7080 Tower Service Manual page 5

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
5 Troubleshooting......................................................................................................................... 93
Dell SupportAssist Pre-boot System Performance Check diagnostics........................................................................93
Running the SupportAssist Pre-Boot System Performance Check....................................................................... 93
Diagnostic LED behavior.....................................................................................................................................................93
Diagnostic error messages................................................................................................................................................. 95
System error messages...................................................................................................................................................... 97
WiFi power cycle................................................................................................................................................................. 98
6 Getting help...............................................................................................................................99
Contacting Dell.................................................................................................................................................................... 99
Contents 5