Dell EMC PowerEdge R620 Owner's Manual page 6

Troubleshooting external connections........................................................................................................................... 97
Troubleshooting the video subsystem........................................................................................................................... 97
Troubleshooting a USB device........................................................................................................................................97
Troubleshooting a serial I/O device................................................................................................................................97
Troubleshooting a NIC..................................................................................................................................................... 97
Troubleshooting a wet system........................................................................................................................................98
Troubleshooting a damaged system.............................................................................................................................. 99
Troubleshooting the system battery..............................................................................................................................99
Troubleshooting power supplies..................................................................................................................................... 99
Troubleshooting cooling problems................................................................................................................................ 100
Troubleshooting cooling fans........................................................................................................................................ 100
Troubleshooting system memory..................................................................................................................................100
Troubleshooting an internal USB key............................................................................................................................ 101
Troubleshooting an SD card........................................................................................................................................... 101
Troubleshooting an optical drive................................................................................................................................... 102
Troubleshooting a tape backup unit............................................................................................................................. 102
Troubleshooting a hard drive......................................................................................................................................... 103
Troubleshooting a storage controller............................................................................................................................103
Troubleshooting expansion cards................................................................................................................................. 104
Troubleshooting processors.......................................................................................................................................... 104
5 Using system diagnostics........................................................................................................................... 105
Dell Online Diagnostics.................................................................................................................................................. 105
Dell Embedded System Diagnostics.............................................................................................................................105
When to use the Embedded System Diagnostics................................................................................................ 105
Running the Embedded System Diagnostics........................................................................................................105
System diagnostics controls................................................................................................................................... 106
6 Jumpers and connectors............................................................................................................................ 107
System board jumper settings...................................................................................................................................... 107
System board connectors............................................................................................................................................. 108
Disabling forgotten password....................................................................................................................................... 109
7 Technical specifications............................................................................................................................... 111
8 System messages....................................................................................................................................... 116
LCD Messages.................................................................................................................................................................116
Viewing LCD messages............................................................................................................................................ 116
Removing LCD Messages........................................................................................................................................ 116
System Error Messages................................................................................................................................................. 116
Warning messages......................................................................................................................................................... 129
Diagnostic messages......................................................................................................................................................129
Alert messages............................................................................................................................................................... 130
9 Getting help................................................................................................................................................ 131
Contacting Dell................................................................................................................................................................ 131
6 Contents