Dell R420xr owner manual Power Supplies, Hot Spare Feature, Removing a Power Supply

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Power Supplies

Your system supports 550 W power supply.

When two identical power supplies are installed, the power supply configuration is redundant (1 + 1). In redundant mode, power is supplied to the system equally from both power supplies to maximize efficiency.

CAUTION: If two power supplies are used, they must be of the same type and have the same maximum output power.

Hot Spare Feature

Your system supports the Hot Spare feature that significantly reduces the power overhead associated with power supply redundancy.

When the Hot Spare feature is enabled, a redundant power supply is switched to a sleep state. The active power supply supports 100% of the load, thus operating at higher efficiency. The redundant power supply in the sleep state monitors output voltage of the active power supply. If the output voltage of the active power supply drops, the redundant power supply in the sleep state returns to an active output state.

The active power supply can also activate a sleeping power supply if having both power supplies active is more efficient than having the redundant power supply in a sleep state. The power supply defaults are to wake both power supplies if the load on the active power supply is greater than 50% and to sleep the redundant power supply if the load falls below 20%.

You can configure the Hot Spare feature using the iDRAC settings. For more information on iDRAC

settings, see the iDRAC7 User's Guide under Remote Access Controller, at dell.com/esmmanuals.

Removing A Power Supply

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

CAUTION: The system requires one power supply for normal operation. On power-redundant systems, remove and replace only one power supply at a time in a system that is powered on.

1.Disconnect the power cable from the power source.

2.Disconnect the power cable from the power supply and remove the straps that bundle and secure the system cables.

NOTE: You may have to unlatch and lift the optional cable management arm if it interferes with power-supply removal. For information about the cable management arm, see the system’s rack documentation.

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Contents Dell PowerEdge R420xr Page Contents Installing System Components Troubleshooting Your System Getting Help 128 Front-Panel Features And Indicators About Your SystemLCD Panel Features Hard-Drive Indicator Patterns LCD Panel FeaturesBack-Panel Features And Indicators Drive-Status Condition Indicator Pattern RAID OnlyNIC Indicator Codes Indicator Indicator Code Link and activityIndicators are off Link indicator is GreenPower Indicator Codes Indicator Indicator CodePower Indicator Condition Pattern Not lit Flashing amberPower Indicator Condition Pattern Power supplyOther Information You May Need Using The System Setup and Boot Manager Choosing The System Boot Mode Entering System SetupResponding To Error Messages Using The System Setup Navigation KeysSystem Setup Options System Setup Main ScreenSystem Bios Screen Memory Settings Screen System Information ScreenProcessor Settings Screen Sata Settings Screen Boot Settings Screen Integrated Devices ScreenSerial Communications Screen System Profile Settings Screen System Security Screen System And Setup Password Features Miscellaneous SettingsAssigning a System And/Or Setup Password Password Or Uefi settings of your systemDeleting Or Changing An Existing Setup Password Using Your System Password To Secure Your SystemOperating With a Setup Password Enabled Entering The Uefi Boot Manager Using The Boot Manager Navigation KeysBoot Manager Screen Uefi Boot MenuMenu Item Description Select Uefi Boot Embedded System ManagementIDRAC Settings Utility Entering The iDRAC Settings UtilityChanging The Thermal Settings Recommended Tools Front Bezel OptionalInstalling The Front Bezel Bezel Filter OptionalRemoving The Front Bezel Removing the Bezel FilterInstalling The Bezel Filter Opening And Closing The SystemOpening The System Closing The System Opening and Closing the SystemInside The System Inside the SystemCooling Shroud Removing The Cooling ShroudInstalling The Cooling Shroud Removing and Installing the Cooling ShroudSystem Memory RdimmProcessor Memory Socket LocationsGeneral Memory Module Installation Guidelines Mode-Specific GuidelinesSample Memory Configurations Memory Optimized Independent Channel ModeMT/s A1, B1 1600 MT/s 1333 A1, A2, B1, B2 Removing Memory Modules Memory module Memory-module socket ejectors Installing Memory Modules Removing The Memory ModuleInstalling The Memory Module Hard Drives Removing a Hot-Swap Hard DriveInstalling a Hot-Swap Hard Drive Removing and Installing a Hot-Swap Hard DriveInstalling a Hard Drive Into a Hard-Drive Carrier Removing a Hard Drive From a Hard-Drive CarrierCooling Fans Location of the Spare Hard-Drive ScrewsRemoving and Installing a Cooling Fan Removing a Cooling FanInstalling a Cooling Fan Internal USB Memory Key OptionalReplacing The Internal USB Key Expansion Card Installation Guidelines Expansion Cards And Expansion-Card RisersRemoving An Expansion Card Page Expansion card Expansion-card latch Riser touch points Installing An Expansion Card Removing Expansion-Card Risers 1Removing and Installing the Expansion-Card Riser Installing Expansion-Card Risers 1 IDRAC Enterprise Card OptionalRemoving The iDRAC Enterprise Card Installing The iDRAC Enterprise Card Removing and Installing the iDRAC Enterprise CardSD vFlash Card Internal Dual SD ModuleReplacing An SD vFlash Card Removing The Internal Dual SD Module Installing The Internal Dual SD Module Removing and Installing the Internal Dual SD ModuleInstalling An Internal SD Card Internal SD CardIntegrated Storage Controller Card Removing An Internal SD CardRemoving The Integrated Storage Controller Card Installing The Integrated Storage Controller Card Processors Removing a ProcessorRemoving and Installing the Processor Heat Sink Installing a Processor Removing and Installing a ProcessorPage Power Supplies Hot Spare FeatureRemoving a Power Supply System Battery Installing a Power SupplyReplacing The System Battery Replacing the System Battery Hard-Drive BackplaneRemoving The Hard-Drive Backplane Press the release tabs and slide the backplane upward Release tabs Hard-drive backplane Guide pins Chassis hooks Installing The Hard-Drive Backplane Cabling DiagramControl Panel Assembly Removing The Control PanelInstalling The Control Panel Removing The Control-Panel ModuleInstalling The Control-Panel Module Removing and Installing the Control-Panel ModulePower Distribution Board Shroud Removing The Power Distribution Board ShroudInstalling The Power Distribution Board Shroud Removing and Installing the PDB ShroudPower Distribution Board Removing The Power Distribution BoardInstalling The Power Distribution Board Removing and Installing the Power Distribution BoardSystem Board Removing The System BoardInstalling The System Board Removing and Installing the System BoardPage Troubleshooting External Connections Troubleshooting The Video SubsystemTroubleshooting a USB Device Troubleshooting a Serial I/O Device Troubleshooting a NICTroubleshooting a Wet System Troubleshooting a Damaged SystemTroubleshooting The System Battery Troubleshooting Power SuppliesTroubleshooting Cooling Problems Troubleshooting Cooling FansTroubleshooting System Memory Troubleshooting An Internal USB Key Troubleshooting An SD Card Troubleshooting a Hard DriveTroubleshooting a Storage Controller Troubleshooting Expansion Cards Troubleshooting Processors Dell Embedded System Diagnostics When To Use The Embedded System DiagnosticsRunning The Embedded System Diagnostics System Diagnostic ControlsDisplayed if at least one event description is recorded Jumpers And Connectors System Board Jumper SettingsSystem Board Connectors FAN5Disabling a Forgotten Password Page Technical Specifications NIC For temperatures between 40 C and 45 C, de Page Page System Error Messages LCD MessagesViewing LCD Messages Removing LCD MessagesError Code AMP0302 MessageDetails ActionASR0003 Message BAT0002 MessageBAT0017 Message CPU0000 MessageCPU0005 Message CPU0010 MessageCPU0023 Message CPU0204 MessageCPU0701 Message CPU0702 MessageCPU0703 Message CPU0704 Message FAN0000 MessageFAN0001 Message FAN1201 MessageHWC1001 Message HWC2003 MessageHWC2005 Message MEM0000 MessageMEM0007 Message MEM0701 MessageMEM0702 Message MEM1205 MessageMEM8000 Message PCI1302 MessagePCI1304 Message PCI1308 MessagePCI1342 Message PCI1348 MessagePCI1360 Message PDR0001 MessagePST0128 Message PST0129 MessagePSU0001 Message PSU0002 MessagePSU0016 Message PSU0031 MessagePSU0032 Message PSU0033 MessagePSU0034 Message PSU0035 MessagePSU0036 Message PSU0037 MessagePSU1201 Message PSU1204 MessagePWR1004 Message PWR1005 MessageRFM1008 Message RFM1014 MessageRFM1201 Message RFM2001 MessageRFM2006 Message SEC0031 MessageSEC0033 Message SEL0006 MessageSEL1204 Message TMP0118 MessageTMP0119 Message TMP0120 MessageDiagnostic Messages Alert MessagesVLT0204 Message Locating Your System Service Tag Contacting DellDocumentation Feedback
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