When to use the Embedded System Diagnostics................................................................................................ 157
Running the Embedded System Diagnostics from Boot Manager.....................................................................157
Running the Embedded System Diagnostics from the Dell Lifecycle Controller.............................................. 157
System diagnostic controls..................................................................................................................................... 158
8 Jumpers and connectors............................................................................................................................ 159
System board jumper settings...................................................................................................................................... 159
System board jumpers and connectors.......................................................................................................................160
Disabling forgotten password........................................................................................................................................162
9 Getting help............................................................................................................................................... 163
Contacting Dell............................................................................................................................................................... 163
Documentation feedback.............................................................................................................................................. 163
Accessing system information by using QRL..............................................................................................................163
Quick Resource Locator for PowerEdge T640.....................................................................................................164
Contents 7
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