Dell R420 Owner's Manual download pdf (Page 125)

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Environmental

NOTE: Applies to data center and non-data center

environments.

• Residual dust present in the air must have a

deliquescent point less than 60% relative humidity.

Gaseous Contamination

NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.

Copper Coupon Corrosion Rate <300 Å/month per Class G1 as defined by ANSI/

ISA71.04-1985.

Silver Coupon Corrosion Rate <200 Å/month as defined by AHSRAE TC9.9.

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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 23
Memory Settings Screen 24
Processor Settings Screen 24
SATA Settings Screen 26
Boot Settings Screen 26
Integrated Devices Screen 27
Serial Communications Screen 28
System Security Screen 29
Miscellaneous Settings 30
Embedded System Management 34
Changing The Thermal Settings 35
Installing System Components 37
Removing The Front Bezel 38
Opening The System 38
Inside The System 39
Cooling Shroud 42
System Memory 43
Mode-Specific Guidelines 45
Sample Memory Configurations 46
Removing Memory Modules 48
Installing Memory Modules 49
Hard Drives 50
Removing A Cabled Hard Drive 54
1. hard-drive carrier 57
2. screws (4) 57
3. hard drive 57
4. screw holes (4) 57
2. screws (5) 58
4. 2.5 inch hard drive 58
Optical Drive (Optional) 60
Cooling Fans 63
Installing A Cooling Fan 64
Removing An Expansion Card 67
Installing An Expansion Card 68
Removing The iDRAC Ports Card 71
SD vFlash Card 72
Internal Dual SD Module 73
Internal SD Card 75
Processors 77
Installing A Processor 79
Power Supplies 80
Hot Spare Feature 81
System Battery 84
Hard-Drive Backplane 85
1. release tabs (2) 87
2. hard-drive backplane 87
3. guide pins (2) 87
4. chassis hooks (4) 87
Control Panel Assembly 90
Removing The Control Panel 91
Installing The Control Panel 92
VGA Module 97
Installing The VGA Module 98
Power Distribution Board 100
System Board 101
Installing The System Board 102
Troubleshooting Your System 105
Troubleshooting A NIC 106
Troubleshooting A Wet System 107
Troubleshooting System Memory 109
Troubleshooting Cooling Fans 109
Troubleshooting An SD Card 110
Troubleshooting A Hard Drive 112
Troubleshooting Processors 114
Using System Diagnostics 115
System Diagnostic Controls 116
Jumpers And Connectors 117
System Board Connectors 118
Technical Specifications 121
System Messages 127
Warning Messages 143
Diagnostic Messages 143
Alert Messages 143
Getting Help 145

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Dell R420 Owner's Manual Page 125

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