User Guide
Table Of Contents
- Dell PowerEdge R720 and R720xd 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
- Cooling Shroud
- System memory
- Hard Drives
- Removing A 2.5 Inch Hard-Drive Blank
- Installing A 2.5 Inch Hard-Drive Blank
- Removing A 2.5 Inch Hard-Drive Blank (Back)
- Installing A 2.5 Inch Hard-Drive Blank (Back)
- Removing A 3.5 Inch Hard-Drive Blank
- Installing A 3.5 Inch Hard-Drive Blank
- Removing A Hot-Swap Hard Drive
- Installing A Hot-Swap Hard Drive
- Removing A Hard Drive From A Hard-Drive Carrier
- Installing A Hard Drive Into A Hard-Drive Carrier
- Optical Drive (Optional)
- Cooling Fans
- Internal USB Memory Key (Optional)
- PCIe Card Holder
- Top Cover Lock Latch
- Cable Retention Bracket
- Expansion Cards And Expansion-Card Risers
- Expansion Card Installation Guidelines
- Removing An Expansion Card From The Expansion-Card Riser 2 Or 3
- Installing An Expansion Card Into The Expansion-Card Riser 2 Or 3
- Removing An Expansion Card From The Expansion-Card Riser 1
- Installing An Expansion Card Into The Expansion-Card Riser 1
- Removing Expansion-Card Risers
- Installing Expansion-Card Risers
- GPU Card Installation Guidelines
- Installing A GPU Card
- Removing A GPU Card
- SD vFlash Card
- Internal Dual SD Module
- Internal SD Card
- Integrated Storage Controller Card
- Network Daughter Card
- Processors
- Power Supplies
- System Battery
- Hard-Drive Backplane
- 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 NIC
- 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 Tape Backup Unit
- 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
Action Review the technical specifications for supported processor types.
CPU0010
Message CPU <
number
> is throttled.
Details The CPU is throttled due to thermal or power conditions.
Action Review system logs for power or thermal exceptions.
CPU0023
Message CPU <
number
> is absent.
LCD Message CPU <
number
> is absent. Check CPU.
Action Verify processor installation. If present, re-seat the processor.
CPU0204
Message CPU <
number
> <
name
> voltage is outside of range.
LCD Message CPU <
number
> <
name
> voltage is outside of range. Re-seat CPU.
Details Voltages outside the allowable range may damage electrical
components or may cause the system to shutdown.
Action
1. Turn off the system and remove input power for one minute.
2. Ensure the processor is seated correctly.
3. Reapply input power and turn on the system.
4. If the issue persists, see
Getting Help.
CPU0700
Message CPU <
number
> initialization error detected.
LCD Message CPU <
number
> initialization error detected. Power cycle system.
Details System BIOS was unable to initialize the processor.
Action
1. Turn off the system and remove input power for one minute.
2. Ensure the processor is seated correctly.
3. Reapply input power and turn on the system.
4. If the issue persists, see
Getting Help.
CPU0701
Message CPU <
number
> protocol error detected.
LCD Message CPU <
number
> protocol error detected. Power cycle system.
Details System event log and operating system logs may indicate that the
exception is external to the processor.
Action
1. Check system and operating system logs for exceptions. If no
exceptions are found, continue.
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