Dell R420 Owner's Manual Page 18
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NIC Indicator Codes
Figure 7. NIC Indicator
1. link indicator
2. activity indicator
Indicator Indicator Code
Link and activity indicators are off The NIC is not connected to the network.
Link indicator is green The NIC is connected to a valid network at its maximum port speed (1 Gbps or 10
Gbps).
Link indicator is amber The NIC is connected to a valid network at less than its maximum port speed.
Activity indicator is blinking green Network data is being sent or received.
Power Indicator Codes
Each power supply has an illuminated translucent handle that serves as an indicator to show whether power is present
or whether a power fault has occurred.
Figure 8. Power Supply Status Indicator
1. power supply status indicator/handle
Power
Indicator
Pattern
Condition
Not lit Power is not connected.
18
- Dell PowerEdge R420 Systems 1
- Owner's Manual 1
- Notes, Cautions, and Warnings 2
- Contents 3
- About Your System 9
- LCD Panel Features 12
- Home Screen 13
- Setup Menu 13
- Diagnostic Indicators 14
- Hard-Drive Indicator Patterns 16
- NIC Indicator Codes 18
- Power Indicator Codes 18
- Getting Started Guide 19
- Choosing The System Boot Mode 21
- Entering System Setup 22
- System Setup Options 22
- System Setup Main Screen 23
- System BIOS Screen 23
- System Information Screen 23
- Memory Settings Screen 24
- Processor Settings Screen 24
- SATA Settings Screen 25
- Boot Settings Screen 26
- Integrated Devices Screen 26
- Serial Communications Screen 27
- System Security Screen 29
- Miscellaneous Settings 30
- Boot Manager Screen 33
- Embedded System Management 34
- Installing System Components 35
- Removing The Front Bezel 36
- Opening The System 36
- Inside The System 37
- Cooling Shroud 40
- System Memory 41
- Mode-Specific Guidelines 43
- Memory Sparing 44
- Memory Mirroring 44
- Sample Memory Configurations 44
- Removing Memory Modules 45
- Hard Drives 47
- Removing A Cabled Hard Drive 51
- 1. hard-drive carrier 54
- 2. screws (4) 54
- 3. hard drive 54
- 4. screw holes (4) 54
- 2. screws (5) 55
- 4. 2.5 inch hard drive 55
- Optical Drive (Optional) 56
- Cooling Fans 60
- Installing A Cooling Fan 61
- Removing An Expansion Card 63
- Installing An Expansion Card 65
- Removing The iDRAC Ports Card 68
- SD vFlash Card 69
- Internal Dual SD Module 70
- Internal SD Card 72
- Processors 74
- Installing A Processor 76
- Power Supplies 77
- Hot Spare Feature 78
- System Battery 81
- Hard-Drive Backplane 82
- 1. release tabs (2) 84
- 2. hard-drive backplane 84
- 3. guide pins (2) 84
- 4. chassis hooks (4) 84
- Control Panel Assembly 88
- Installing The Control Panel 89
- VGA Module 94
- Installing The VGA Module 95
- Power Distribution Board 97
- System Board 98
- Installing The System Board 99
- Troubleshooting Your System 101
- Troubleshooting A NIC 102
- Troubleshooting A Wet System 102
- Troubleshooting Cooling Fans 105
- Troubleshooting System Memory 105
- Troubleshooting An SD Card 106
- Troubleshooting A Hard Drive 108
- Troubleshooting Processors 110
- Using System Diagnostics 111
- System Diagnostic Controls 112
- Jumpers And Connectors 113
- System Board Connectors 114
- Technical Specifications 117
- System Messages 121
- Warning Messages 135
- Diagnostic Messages 135
- Alert Messages 135
- Getting Help 137
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