Dell T420 Owner's Manual Page 119
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Figure 67. Removing and Installing the VGA Module
1. control panel 2. control-panel board
3. VGA module 4. securing tabs (2)
5. control-panel assembly
Installing The VGA Module—Rack Mode
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.
1. Align the VGA module with the securing tabs on the control-panel board.
2. Install the VGA module by pressing down the VGA module until it is fully seated in the securing tabs.
3. Connect the VGA cable to the control-panel assembly.
4. Install the control panel for rack mode in the control-panel assembly.
5. Install the control-panel assembly.
6. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
7. If applicable, install the front bezel.
System Board
119
- Dell PowerEdge T420 Systems 1
- Owner's Manual 1
- Notes, Cautions, and Warnings 2
- Contents 3
- About Your System 9
- LCD Panel Features 15
- Home Screen 16
- Setup Menu 16
- Diagnostic Indicators 17
- Hard-Drive Indicator Patterns 19
- NIC Indicator Codes 22
- Getting Started Guide 24
- Choosing The System Boot Mode 25
- Entering System Setup 26
- System Setup Options 27
- Memory Settings Screen 28
- Processor Settings Screen 28
- SATA Settings Screen 30
- Boot Settings Screen 30
- Integrated Devices Screen 31
- Serial Communications Screen 31
- System Security Screen 33
- Miscellaneous Settings 34
- Boot Manager Screen 37
- Embedded System Management 38
- 4. Click Back → Finish → Yes 39
- Installing System Components 40
- System Feet—Tower Mode 41
- Installing The System Feet 42
- Removing The Wheel Assembly 42
- Installing The Wheel Assembly 43
- Opening The System 44
- Inside The System 45
- 3. release latch 49
- Cooling Shroud 51
- Installing The Cooling Shroud 52
- Hard Drives—Hot-Swappable 53
- Hard Drives—Cabled 59
- Removing A Cabled Hard Drive 61
- Hard-Drive Backplane 63
- 3. hooks (11) 64
- 5. I2C connector 65
- 3. hooks (7) 67
- Four-Slot Hard-Drive Blank 70
- System Memory 71
- Mode-Specific Guidelines 73
- Sample Memory Configurations 74
- Removing Memory Modules 76
- Installing Memory Modules 77
- Cooling Fans 78
- PCIe Card Holder (Optional) 85
- Expansion Cards 86
- Removing An Expansion Card 87
- Installing An Expansion Card 88
- Removing A GPU Card 89
- Installing A GPU Card 90
- Removing The iDRAC Ports Card 91
- Internal Dual SD Module 93
- Internal SD Card 94
- Processors 95
- Removing A Processor 96
- Installing A Processor 98
- Redundant AC Power Supply 99
- Non-Redundant AC Power Supply 103
- System Battery 107
- Control-Panel Assembly 108
- Removing The Control Panel 112
- Installing The Control Panel 114
- Removing The LCD Module 117
- Installing The LCD Module 118
- System Board 119
- Removing The System Board 120
- Installing The System Board 121
- Rack Mode 123
- Rack Installation 125
- Troubleshooting Your System 126
- Troubleshooting A NIC 127
- Troubleshooting A Wet System 128
- Troubleshooting Cooling Fans 130
- Troubleshooting System Memory 130
- Troubleshooting An SD Card 132
- Troubleshooting A Hard Drive 133
- Troubleshooting Processor 134
- Using System Diagnostics 135
- System Diagnostic Controls 136
- Jumpers And Connectors 137
- Technical Specifications 141
- System Messages 146
- Warning Messages 162
- Diagnostic Messages 162
- Alert Messages 162
- Getting Help 163
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