Running the Embedded System Diagnostics from the Dell Lifecycle Controller..............................................129
System diagnostic controls..................................................................................................................................... 130
8 Jumpers and connectors ............................................................................................................................ 131
System board jumper settings....................................................................................................................................... 131
System board connectors..............................................................................................................................................132
Disabling forgotten password........................................................................................................................................133
9 Getting help............................................................................................................................................... 134
Contacting Dell EMC......................................................................................................................................................134
Documentation feedback.............................................................................................................................................. 134
Accessing system information by using QRL..............................................................................................................134
Quick Resource Locator for C6400 and C6420 systems....................................................................................135
Receiving automated support with SupportAssist ....................................................................................................135
Recycling or End-of-Life service information..............................................................................................................135
6 Contents