Installing and removing system componentsSafety instructionsWARNING: Whenever you need to lift the system, get others to assist you. To avoid injury, do not attempt to lift the system byyourself.WARNING: Opening or removing the system cover while the system is powered on may expose you to a risk of electric shock.CAUTION: Do not operate the system without the cover for a duration exceeding five minutes. Operating the system without thesystem cover can result in component damage.CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simplerepairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damagedue to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that areshipped with your product.NOTE: It is recommended that you always use an antistatic mat and antistatic strap while working on components inside thesystem.CAUTION: To ensure proper operation and cooling, all bays in the system and system fans must be always populated with acomponent or a blank.Before working inside your systemPrerequisitesFollow the safety guidelines listed in Safety instructions.Steps1 Turn off the system, including any attached peripherals.2 Disconnect the system from the electrical outlet and disconnect the peripherals.3 If applicable, remove the system from the rack.For more information, see the Rack Installation Guide at Dell.com/poweredgemanuals.4 Remove the system cover.After working inside your systemPrerequisitesFollow the safety guidelines listed in Safety instructions.Steps1 Install the system cover.2 If applicable, install the system into the rack.For more information, see the Rack Installation Guide at Dell.com/poweredgemanuals.3 Reconnect the peripherals and connect the system to the electrical outlet.4 Turn on the system, including any attached peripherals.6Dell EMC PowerEdge R640 Installation and Service ManualInstalling and removing system components65
