Installing the left control panel................................................................................................................................164
Removing the right control panel...........................................................................................................................165
Installing the right control panel............................................................................................................................. 166
7 Using system diagnostics........................................................................................................................... 168
Dell Embedded System Diagnostics.............................................................................................................................168
Running the Embedded System Diagnostics from Boot Manager.....................................................................168
Running the Embedded System Diagnostics from the Dell Lifecycle Controller..............................................168
System diagnostic controls..................................................................................................................................... 169
8 Jumpers and connectors ........................................................................................................................... 170
System board jumpers and connectors........................................................................................................................ 171
System board jumper settings...................................................................................................................................... 172
Disabling forgotten password........................................................................................................................................173
9 Getting help................................................................................................................................................174
Contacting Dell EMC......................................................................................................................................................174
Documentation feedback...............................................................................................................................................174
Accessing system information by using QRL.............................................................................................................. 174
Quick Resource Locator for R640..........................................................................................................................175
Receiving automated support with SupportAssist ....................................................................................................175
Recycling or End-of-Life service information..............................................................................................................175
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