Owner's Manual
Table Of Contents
- Dell PowerEdge R920 System Owner's Manual
- About Your System
- Using The System Setup and Boot Manager
- Installing System Components
- Recommended Tools
- Front Bezel (Optional)
- Opening And Closing The System
- Inside The System
- Cable Management Tray
- System Memory
- General Memory Module Installation Guidelines
- Mode-Specific Guidelines
- Advanced ECC (Lockstep)
- Memory Optimized (Independent Channel) Mode
- Memory Sparing
- Memory Mirroring
- Fault Resilient Memory
- Sample Memory Configurations
- Removing A Memory-Riser Blank
- Installing A Memory-Riser Blank
- Removing A Memory Riser
- Installing A Memory Riser
- Removing Memory Modules From The Memory Riser
- Installing Memory Modules
- Memory Riser And Fan Cage
- Hard Drives
- Optical Drive (Optional)
- Cooling Fans
- Internal USB Memory Key (Optional)
- Expansion Cards And Expansion-Card Risers
- Expansion Card Installation Guidelines
- Removing The Left Expansion Card Riser Blank
- Installing The Left Expansion Card Riser Blank
- Removing The Right Expansion Card Riser Blank
- Removing An Expansion Card From Expansion-Card Risers 2 and 3
- Installing An Expansion Card Into The Expansion-Card Riser 2 and 3
- NDC Riser (I/O Riser 1)
- Network Daughter Card
- SD vFlash Card
- Internal Dual SD Module
- Internal SD Card
- Integrated Storage Controller Card
- RAID Battery
- Processors
- Power Supplies
- Hot Spare Feature
- Removing An AC Power Supply
- Installing An AC Power Supply
- Wiring Instructions For A DC Power Supply
- Assembling And Connecting The Safety Ground Wire
- Assembling The DC Input Power Wires
- Removing A DC Power Supply
- Installing A DC Power Supply
- Removing The Power Supply Blank
- Installing The Power Supply Blank
- Power Distribution Board
- System Battery
- Hard-Drive Backplane
- SAS Expander Daughter Card
- Control Panel Board
- System Board
- Troubleshooting Your System
- Safety First—For You And Your System
- Troubleshooting System Startup Failure
- Troubleshooting External Connections
- Troubleshooting The Video Subsystem
- Troubleshooting A USB Device
- Troubleshooting A Serial I/O Device
- Troubleshooting A Wet System
- Troubleshooting A Damaged System
- Troubleshooting The System Battery
- Troubleshooting Power Supplies
- Troubleshooting Cooling Problems
- Troubleshooting Cooling Fans
- Troubleshooting System Memory
- Troubleshooting An Internal USB Key
- Troubleshooting An SD Card
- Troubleshooting An Optical Drive
- Troubleshooting A Hard Drive
- Troubleshooting A Storage Controller
- Troubleshooting Expansion Cards
- Troubleshooting Processors
- Using System Diagnostics
- Jumpers And Connectors
- Technical Specifications
- System Messages
- Getting Help

Error Code Message Information
PSU1201
Message Power supply redundancy is lost.
Details The power supply tries to operate in a degraded state. System
Performance and power redundancy may be degraded or lost.
Action Check input power. Reinstall the power supply. If the issue persists,
see Getting Help.
PSU1204
Message The power supplies are not redundant. Insufficient resources to
maintain normal operations.
LCD Message PSU redundancy degraded. Check PSU cables.
Details The current power operational mode is non-redundant because of a
power supply exception, a power supply inventory change, or a
system power inventory change.
Action Check the event log for power supply failures. Review system
configuration and power consumption.
PWR1004
Message The system performance degraded because power capacity has
changed.
Details The system may power down or operate in a performance degraded
state.
Action Check the event log for power supply failures. Review system
configuration and power consumption and upgrade or install power
supplies accordingly.
PWR1005
Message The system performance degraded because the user-defined power
capacity has changed.
Details The user-defined power settings have affected system operation.
Action If unintended, review system configuration changes and power
policy.
PWR1006
Message The system halted because system power exceeds capacity.
LCD Message System power demand exceeds capacity. System halted.
Details The system halted because system power exceeds capacity.
Action Review system configuration, upgrade power supplies or reduce
system power consumption.
RFM1008
Message Failure detected on Removable Flash Media <
name
>.
LCD Message Removable Flash Media <
name
> failed. Check SD Card.
151