Dell OptiPlex 990 (Early 2011) - Manual (Page 5)

16 System Board..........................................................................................45
Removing the System Board ...........................................................................................45
Installing The System Board ...........................................................................................47
17 Drive Cage...............................................................................................49
Removing the Drive Cage ................................................................................................49
Installing The Drive Cage ................................................................................................50
18 Fan Shelter..............................................................................................53
Removing the Fan Shelter ...............................................................................................53
Installing The Fan Shelter ................................................................................................53
19 System Setup..........................................................................................55
System Setup ..................................................................................................................55
Boot Menu .......................................................................................................................55
Boot Menu Enhancements ..............................................................................................55
Timing Key Sequences ....................................................................................................56
Beep Codes and Text Error Messages ............................................................................57
Navigation .......................................................................................................................57
System Setup Options .....................................................................................................57
20 Troubleshooting......................................................................................69
Diagnostic LEDs ..............................................................................................................69
Beep Codes .....................................................................................................................76
Error Messages ...............................................................................................................79
21 Specifications.........................................................................................89
Technical Specifications .................................................................................................89
22 Contacting Dell.......................................................................................99
Contacting Dell ...............................................................................................................99