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
ASR0003
Message The watchdog timer power cycled the system.
Details The operating system or an application failed to communicate within
the time-out period. The system was power-cycled.
Action Check the operating system, application, hardware, and system event
log for exception events.
BAT0002
Message The system board battery has failed.
LCD Message The system board battery has failed. Check battery.
Details The system board battery is either missing or bad.
Action See Getting Help.
BAT0017
Message The <
name
> battery has failed.
LCD Message The <
name
> battery has failed. Check battery.
Details The <
name
> battery is either missing, bad, or unable to charge due to
thermal issues.
Action Check system fans. If the problem persists, see
Getting Help.
CPU0000
Message CPU <
number
> has an internal error (IERR).
LCD Message CPU <
number
> has an internal error (IERR).
Details System Event Log and Operating System Logs may indicate that the
exception is external to the processor.
Action Review System Event Log and Operating System Logs. If the issue
persists, see
Getting Help.
CPU0001
Message CPU <
number
> has a thermal trip (over-temperature) event.
LCD Message CPU <
number
> has a thermal trip. Check CPU heat sink.
Details The processor temperature increased beyond the operational range.
Action Review the logs for fan failures. If no fan failures are detected, check
inlet temperature (if available) and reinstall processor heat sink. If the
problem persists, see
Getting Help.
CPU0005
Message CPU <
number
> configuration is unsupported.
LCD Message CPU <
number
> configuration is unsupported. Check CPU or BIOS
revision.
Details System is unable to boot or may run in a degraded state.
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