Removing the Power Supply | Dell 745N guide

Figure 6-5. Removing the Power Distribution Board

hard drive 0 power cable

hard drive 1 power cable

hard drive 2 power cable

hard drive 3 power cable

fan

power distribution board

power supply cable

#2 Phillips screws (4)

Power Supply

The system supports a single nonredundant power supply.

Removing the Power Supply

CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1Open the system. See "Opening the System" in Troubleshooting Your System."

2Disconnect the following power supply cables: a P3 from the power distribution board

b P2 from system board connector CN2 c P1 from system board connector CN1

Installing System Components

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Dell 745N manual Removing the Power Supply

Contents

W . d e l l . c o m s u p p o r t . d e l l . c o m Installation and Troubleshooting Guide Abbreviations and Acronyms Contents Troubleshooting System Cooling Problems Safety First-For You and Your SystemTroubleshooting the Video Subsystem Troubleshooting a Serial I/O Device Installing System Components Dell Enterprise Training and Certification Memory Module Installation Guidelines 106 Returning Items for Warranty Repair or CreditIntegrated Network Adapter Connector 115 105 Contents Introduction IntroductionOther Documents You May Need Obtaining Technical Assistance Indicators, Messages, and Codes Indicators, Messages, and CodesFront-Panel Indicators and Features Hard-drive 2 status indicator Front-Panel Features Hard-drive 0 status indicator Front-Panel Indicator Codes LED Indicator Description Back-Panel Indicators and Features Blue/amber status indicator Indicators, Messages, and Codes Back-Panel Features Serial connectorPage System Messages Causes Corrective Actions Back-Panel LED Codes LED Indicator LED States DescriptionSystem Messages System Troubleshooting Your System Figure A-2 for jumper location Guide See Getting Help Your System. If the problem persists, see Check the Integrated Devices Integrated Drive Controller is enabled Faulty hard drive Replace the hard drive. See Server Module Beep Codes Cause Corrective Action System Beep Codes Server Module Beep Codes Cause Corrective Action Server Module Beep Codes Cause Corrective Action Alert Messages Diagnostics Messages Before You Begin Finding Software SolutionsTroubleshooting Errors and Conflicts Finding Software Solutions IRQ Assignment Conflicts Input ErrorsIRQ Assignment Defaults IRQ Line Application Conflicts IRQ11 Finding Software Solutions Running the System Diagnostics Running the System DiagnosticsUsing Server Administrator Diagnostics System Diagnostics Features Running the System Diagnostics When to Use the System Diagnostics Selecting Diagnostics Options System Diagnostics Testing OptionsUsing the Custom Test Options Selecting Devices for Testing Viewing Information and Results External Connections Troubleshooting Your SystemSafety First-For You and Your System Checking Basic Power Problems Checking the Equipment Troubleshooting the Video Subsystem Troubleshooting the Mouse Troubleshooting the Keyboard Troubleshooting a Serial I/O Device Troubleshooting Basic I/O Functions Troubleshooting a USB Device Troubleshooting a Network Adapter Inside the System Responding to a Systems Management Software Alert Message Removing and Replacing the Bezel Opening the System Installing and Removing the Bezel Release latch Closing the System Troubleshooting a Damaged System Troubleshooting a Wet System Troubleshooting the System Battery Troubleshooting a Fan Troubleshooting the Power SupplyTroubleshooting System Cooling Problems Troubleshooting Hard Drives Troubleshooting Expansion Cards Troubleshooting System Memory Troubleshooting the Processor Troubleshooting the System Board Troubleshooting Your System System Board Components Installing System ComponentsInstalling System Components Processor and heat sink Drac connector System batteryCooling Shroud Removing the Cooling Shroud Cooling shroud Release latch System BatteryInstalling the Cooling Shroud Replacing the System Battery Replacing the Battery Release tab Battery socket Fan Assembly Removing the Fan Assembly Installing the Power Distribution Board Power Distribution BoardInstalling the Fan Assembly Removing the Power Distribution Board Removing the Power Supply Power Supply Connector Installing the Power SupplyP1 connector P2 connector Power supply Captive screw Expansion Cards Installing an Expansion Card Expansion card PCI slot Installing and Removing a Remote Access Controller Removing the Riser Board Riser BoardRemoving an Expansion Card Removing a Daughter Card Installing the Riser BoardDaughter Card Daughter card connector LED cable Hard-drive cables Installing a Daughter Card Memory Memory Module Installation GuidelinesSample Memory Module Configurations Total System Memory Installing Memory Modules Socket Alignment key Control PanelRemoving Memory Modules Removing the Control Panel Installing System Components 13. Control Panel Removal Installing the Control Panel Replacing the Processor Sata Cable KitsProcessor Removing the Sata Cable Kits Installing System Components Securing clips Heat sink Heat-sink posts Processor 14. Installing and Removing the Securing Clip Latch Socket-release lever Pin-1 corner of socket ZIF socket 15. Installing and Removing the Processor in the Socket System Board Removing the System Board Assembly Installing System Components 16. Removing the System Board and System Board Tray Installing the System Board Assembly Installing System Components Installing System Components Removing a Hard Drive Installing DrivesConfiguring the Boot Drive Installing Drives Removing the Hard-Drive Carrier Release lever Installing a Hard Drive Hardware RAID Internal Drives Connecting Hard Drives for RAIDSoftware RAID Getting Help Online ServicesGetting Help Technical Assistance Automated Order-Status Service AutoTech Service Technical Support Service 11 4515 Before You CallContacting Dell Toll-free 02 481 92 300-65-55-330820 240 530 0660 866 440 0800 9051 481 604 633 02 2186 27 818980-9-15-3978 09 253 313 70233287 01-899-753-0777 04 99 75 40 0825 3870825 823 0825 004 2108129812 08004414951808844140083 2108129800 0870 906 1850 5430870 908 01 204 81-44-556-3894 81-44-556-416281-44-520-1435 Toll-free0120-198-433 Toll-free 0800 512Or 512 3420808075 020 674 42 001-800-882-1519020 674 45 020 674 47 0800-50-669 67123162298 001-800-507-0962 902 100 Toll-free 800 6011011 709 011 706 0844 811 08 590 0508 587 70 20 140 14 01344 860 01344 373 8001-3605 Toll-free 1-877-Dellnet Getting Help Jumpers Jumpers, Switches, and ConnectorsJumpers, Switches, and Connectors Jumpers-A General Explanation Passwd System Board Jumpers CN3 Fan System Board ConnectorsTable A-2. System Board Connectors Connector Description Table A-2. System Board Connectors Description Riser Board Connectors Disabling a Forgotten Password Jumpers, Switches, and Connectors Connectors ConnectorsConnectors Table B-1. I/O Connector Icons Icon Connector Serial Connector Autoconfiguration Serial Connector PS/2-Compatible Keyboard and Mouse Connectors Video Connector Integrated Network Adapter Connector USB Connector Network Cable Requirements Abbreviations and Acronyms 117 Abbreviations and Acronyms 118 Abbreviations and Acronyms LVD Abbreviations and Acronyms 119 NIS ROM 120 Abbreviations and Acronyms Index 121 Index 122 Index See diagnostics Index 123 124 Index Installing and Removing the Securing Clip Network Adapter Indicators Front-Panel USB ConnectorInstalling and Removing the Bezel Installing and Removing the Riser Board Figure A-1 Table B-1 Table B-2 Serial Connector Pin Assignments 112 Table B-3