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

WARNING
: The heat sink and processor are hot to the touch for some time after the system has been
powered down. Allow the heat sink and processor to cool before handling them.
CAUTION
: Never remove the heat sink from a processor unless you intend to remove the processor. The heat
sink is necessary to maintain proper thermal conditions.
5. Remove the heat sink/heat-sink blank and processor/processor blank, as applicable.
NOTE
: The procedure to remove the heat-sink blank or processor blank is similar to removing a heat-sink or
processor.
6. Unpack the new processor.
7. Align the processor with the socket keys on the ZIF socket.
CAUTION
: Positioning the processor incorrectly can permanently damage the system board or the processor.
Be careful not to bend the pins in the socket.
CAUTION
: Do not use force to seat the processor. When the processor is positioned correctly, it engages
easily into the socket.
8. With the release levers on the processor socket in the open position, align pin 1 of the processor, using pin 1
position guide on the socket, as reference and set the processor lightly in the socket.
9. Close the processor shield.
10. Rotate the socket-release lever near the lock icon until it is locked in position.
11. Similarly, rotate the socket-release lever near the unlock icon until it is locked in position.
12. Using a clean lint-free cloth, remove the thermal grease from the heat sink.
CAUTION
: Applying too much thermal grease can result in excess grease coming in contact with and
contaminating the processor socket.
13. Open the grease applicator included with your processor kit and apply all of the thermal grease in the applicator to
the center of the topside of the new processor.
14. Place the heat sink on the processor.
15. Using a #2 Phillips screwdriver, tighten the heat-sink retention sockets.
16. Install the cooling shroud.
17. Close the system.
18. Reconnect your system and peripherals to their electrical outlets, and turn on the system.
19. Press <F2> to enter the System Setup and check that the processor information matches the new system
configuration.
20. Run the system diagnostics to verify that the new processor operates correctly.
Power Supplies
Your system supports either:
• Two 495 W, 750 W, or 1100 W AC power supply modules or
• Two 750 W or 1100 W DC power supply modules
NOTE
: Titanium power supply is nominally rated for 200 VAC to 240 VAC input only.
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.
When only one power supply is installed, the power supply configuration is non-redundant (1 + 0). Power is supplied to
the system only by the single power supply.
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