Removing The Control-Panel Assembly
...........................................................................................................98
Installing The Control-Panel Assembly
............................................................................................................ 99
System Board
..........................................................................................................................................................99
Removing The System Board
........................................................................................................................... 99
Installing The System Board
.......................................................................................................................... 101
4 Troubleshooting Your System............................................................................................... 103
Safety First—For You And Your System
............................................................................................................... 103
Troubleshooting System Startup Failure
.............................................................................................................. 103
Troubleshooting External Connections
.................................................................................................................103
Troubleshooting The Video Subsystem
................................................................................................................ 103
Troubleshooting A USB Device
............................................................................................................................ 103
Troubleshooting A Serial I/O Device
.................................................................................................................... 104
Troubleshooting A NIC
..........................................................................................................................................104
Troubleshooting A Wet System
............................................................................................................................105
Troubleshooting A Damaged System
................................................................................................................... 105
Troubleshooting The System Battery
................................................................................................................... 106
Troubleshooting Power Supplies
..........................................................................................................................106
Troubleshooting Cooling Problems
.......................................................................................................................106
Troubleshooting Cooling Fans
.............................................................................................................................. 107
Troubleshooting System Memory
.........................................................................................................................107
Troubleshooting An Internal USB Key
..................................................................................................................108
Troubleshooting An SD Card
................................................................................................................................ 108
Troubleshooting An Optical Drive
.........................................................................................................................109
Troubleshooting A Tape Backup Unit
...................................................................................................................109
Troubleshooting A Hard Drive
.............................................................................................................................. 110
Troubleshooting A Storage Controller
..................................................................................................................110
Troubleshooting Expansion Cards
........................................................................................................................111
Troubleshooting Processors
.................................................................................................................................112
5 Using System Diagnostics..................................................................................................... 113
Dell Online Diagnostics
.........................................................................................................................................113
Dell Embedded System Diagnostics
..................................................................................................................... 113
When To Use The Embedded System Diagnostics
........................................................................................113
Running The Embedded System Diagnostics
.................................................................................................113
System Diagnostic Controls
........................................................................................................................... 114
6 Jumpers And Connectors...................................................................................................... 115
System Board Jumper Settings
............................................................................................................................115
System Board Connectors
....................................................................................................................................116
Disabling A Forgotten Password
.......................................................................................................................... 118
Summary of Contents for PowerEdge R820
Page 1: ...Dell PowerEdge R820 Owner s Manual Regulatory Model E21S Series Regulatory Type E21S001 ...
Page 8: ...8 ...
Page 32: ...32 ...
Page 42: ...Figure 15 Memory Socket Locations on the System Board 42 ...
Page 124: ...124 ...
Page 142: ...142 ...