Troubleshooting power supply unit problems........................................................................................................166
Troubleshooting cooling problems................................................................................................................................ 167
Troubleshooting cooling fans.........................................................................................................................................167
Troubleshooting system memory..................................................................................................................................168
Troubleshooting an internal USB key........................................................................................................................... 169
Troubleshooting an SD card.......................................................................................................................................... 169
Troubleshooting an optical drive................................................................................................................................... 170
Troubleshooting a tape backup unit............................................................................................................................. 170
Troubleshooting a hard drive..........................................................................................................................................171
Troubleshooting a storage controller.............................................................................................................................171
Troubleshooting expansion cards..................................................................................................................................172
Troubleshooting processors...........................................................................................................................................173
System messages........................................................................................................................................................... 173
Warning messages....................................................................................................................................................173
Diagnostic messages................................................................................................................................................173
Alert messages..........................................................................................................................................................174
8 Using system diagnostics........................................................................................................................... 175
Dell Embedded System Diagnostics.............................................................................................................................175
When to use the Embedded System Diagnostics................................................................................................ 175
Running the Embedded System Diagnostics from Boot Manager.....................................................................175
Running the Embedded System Diagnostics from the Dell Lifecycle Controller..............................................175
System diagnostic controls..................................................................................................................................... 176
9 Jumpers and connectors ............................................................................................................................177
System board jumper settings.......................................................................................................................................177
System board connectors..............................................................................................................................................178
Disabling a forgotten password.....................................................................................................................................179
10 Getting help...............................................................................................................................................181
Contacting Dell................................................................................................................................................................ 181
Accessing system information by using QRL...............................................................................................................181
Quick Resource Locator (QRL)...............................................................................................................................182
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