Dell Powervault NX400 - Manual (Page 6)

Removing The Power Distribution Board .........................................................................................................79
Installing The Power Distribution Board ..........................................................................................................80
System Board ..........................................................................................................................................................81
Removing The System Board ...........................................................................................................................81
Installing The System Board ............................................................................................................................82
4 Troubleshooting Your System.................................................................................................85
Safety First—For You And Your System .................................................................................................................85
Troubleshooting System Startup Failure ................................................................................................................85
Troubleshooting External Connections ...................................................................................................................85
Troubleshooting The Video Subsystem ..................................................................................................................85
Troubleshooting A USB Device ..............................................................................................................................85
Troubleshooting A Serial I/O Device ......................................................................................................................86
Troubleshooting A NIC ............................................................................................................................................86
Troubleshooting A Wet System ..............................................................................................................................86
Troubleshooting A Damaged System .....................................................................................................................87
Troubleshooting The System Battery .....................................................................................................................88
Troubleshooting Redundant Power Supplies .........................................................................................................88
Troubleshooting A Non-Redundant Power Supply .................................................................................................88
Troubleshooting Cooling Problems .........................................................................................................................89
Troubleshooting Cooling Fans ................................................................................................................................89
Troubleshooting System Memory ...........................................................................................................................89
Troubleshooting An Internal USB Key ....................................................................................................................90
Troubleshooting An SD Card ..................................................................................................................................90
Troubleshooting An Optical Drive ...........................................................................................................................91
Troubleshooting A Tape Backup Unit .....................................................................................................................91
Troubleshooting A Hard Drive ................................................................................................................................92
Troubleshooting A Storage Controller ....................................................................................................................92
Troubleshooting Expansion Cards ..........................................................................................................................93
Troubleshooting Processors ...................................................................................................................................94
5 Using System Diagnostics.......................................................................................................95
Dell Online Diagnostics ...........................................................................................................................................95
Dell Embedded System Diagnostics .......................................................................................................................95
When To Use The Embedded System Diagnostics ..........................................................................................95
Running The Embedded System Diagnostics ...................................................................................................95
System Diagnostic Controls .............................................................................................................................96
6 Jumpers And Connectors........................................................................................................97
System Board Jumper Settings ..............................................................................................................................97
System Board Connectors ......................................................................................................................................98
Disabling A Forgotten Password ............................................................................................................................99