Dell OptiPlex 390 (Mid 2011) - Manual (Page 5)

16 Power Supply..........................................................................................47
Removing The Power Supply ..........................................................................................47
Installing the Power Supply ............................................................................................49
17 System Board..........................................................................................51
Removing The System Board ..........................................................................................51
Installing the System Board ............................................................................................56
18 System Setup..........................................................................................57
System Setup ..................................................................................................................57
Boot Menu .......................................................................................................................57
Boot Menu Enhancements ..............................................................................................57
Timing Key Sequences ....................................................................................................58
Beep Codes and Text Error Messages ............................................................................59
Navigation .......................................................................................................................59
System Setup Options .....................................................................................................59
19 Troubleshooting......................................................................................69
Diagnostic LEDs ..............................................................................................................69
Beep Codes .....................................................................................................................76
Error Messages ...............................................................................................................79
20 Specifications.........................................................................................83
Specification ...................................................................................................................83
21 Contacting Dell.......................................................................................91
Contacting Dell ................................................................................................................91