- Notes, Cautions, and Warnings
- 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 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 Cabled Hard Drive
- Installing A Cabled Hard Drive
- Removing A 2.5 Inch Hard Drive From A 3.5 Inch Hard-Drive Adapter
- Installing A 2.5 Inch Hard Drive Into A 3.5 Inch Hard-Drive Adapter
- Removing A Hard Drive Or A Hard-Drive Adapter From A Hard-Drive Carrier
- Installing A Hard Drive Or A Hard-Drive Adapter Into A Hard-Drive Carrier
- Optical Drive (Optional)
- Cooling Fans
- Internal USB Memory Key (Optional)
- Expansion Cards And Expansion-Card Risers
- iDRAC Ports Card (Optional)
- SD vFlash Card
- Internal Dual SD Module
- Internal SD Card
- Integrated Storage Controller Card
- Processors
- Power Supplies
- System Battery
- Hard-Drive Backplane
- Control Panel Assembly
- VGA Module
- Power Distribution Board Shroud
- Power Distribution Board
- System Board
- Troubleshooting
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
Dell PowerEdge R420 Systems Owner's Manual
Inside The System
- 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.
- NOTE: Components that are hot-swappable are marked orange and touch points on the components are marked blue.
Figure 1. Inside the System—With
a Non-Redundant Power Supply
- cooling shroud
- power supply unit
- storage controller card
- expansion-card riser 2
- expansion card
- expansion-card riser 1
- heat sink for processor 2
- DIMMs (12)
- cooling fans (5)
- optical drive
- hard drives (4)
- front I/O panel
- cable routing latch
Figure 2. Inside the System—With
Redundant Power Supplies
- power distribution board shroud
- cooling shroud
- power supply units (2)
- storage controller card
- expansion-card riser 2
- expansion card
- expansion-card riser 1
- heat sink for processor 2
- DIMMs (12)
- cooling fans (5)
- optical drive
- hard drives (4)
- control panel
- hard-drive backplane
- cable routing latch
- power distribution board
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