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Troubleshooting Your System
Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide
Safety First—For You and Your System
To perform certain procedures in this document, you must remove the system cover and work inside the system. While working inside the system, do not
attempt to service the system except as explained in this guide and elsewhere in your system documentation.
External Connections
Loose or improperly connected cables are the most likely source of problems for the system, monitor, and other peripherals (such as a keyboard, mouse, or
other external device). Ensure that all external cables are securely attached to the external connectors on your system. See Figure2-1 and Figure2-2 for the
front- and back-panel connectors on your system.
Checking Basic Power Problems
1. If the power indicator on the system front panel does not indicate that power is available to the system, ensure that the power cable is securely
connected to the power supply.
2. If the system is connected to a PDU or UPS, turn the PDU or UPS off and then on.
3. If the PDU or UPS is not receiving power, plug it into another electrical outlet. If it still is not receiving power, try another PDU or UPS.
4. Reconnect the system to the electrical outlet and turn on the system.
5. If the system still is not working properly, see "Troubleshooting the Power Supply."
Start-Up Routine
Look and listen during the system's start-up routine for the indications described in Table5-1.
Table 5-1. Start-UpRoutineIndications
Safety First—For You and Your System
External Connections
Checking Basic Power Problems
Start-Up Routine
Checking the Equipment
Troubleshooting Basic I/O Functions
Troubleshooting a Network Adapter
RespondingtoaSystemsManagementSoftwareAlertMessage
Inside the System
Opening the System
Closing the System
Troubleshooting a Wet System
Troubleshooting a Damaged System
Troubleshooting the System Battery
Troubleshooting the Power Supply
Troubleshooting System Cooling Problems
Troubleshooting the Diskette Drive
Troubleshooting the CD Drive
Troubleshooting a SATA Hard Drive
Troubleshooting a SCSI Hard Drive
Troubleshooting Expansion Cards
Troubleshooting System Memory
Troubleshooting the Processor
Troubleshooting the System Board
CAUTION: Always follow the instructions closely, and ensure that you review all information in "Safety Instructions" in the System Information
Guide.
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.
Look/listen for:
Action
- System Board Jumpers 2
- System Board Connectors 3
- Riser Board Connectors 4
- I/O Connectors 6
- Video Connector 8
- USB Connector 8
- Network Cable Requirements 9
- Abbreviations and Acronyms 10
- Introduction 17
- System Messages 20
- System Beep Codes 25
- Warning Messages 26
- Diagnostics Messages 26
- Alert Messages 26
- Finding Software Solutions 27
- Application Conflicts 28
- IRQ Assignment Conflicts 28
- System Diagnostics Features 29
- From the Utility Partition 30
- Error Messages 31
- Troubleshooting Your System 32
- Checking the Equipment 33
- Troubleshooting the Mouse 34
- Problem 35
- Inside the System 37
- Opening the System 37
- Closing the System 38
- Troubleshooting a Wet System 39
- Troubleshooting a Fan 41
- Troubleshooting the CD Drive 42
- System Board Components 48
- Cooling Shroud 49
- System Battery 49
- Fan Assembly 50
- Power Supply 51
- Expansion Cards 52
- Riser Board 53
- System Memory 54
- Installing Memory Modules 55
- Processor 56
- Back to Contents Page 59
- Installing Drives 60
- SCSI Interface Cables 61
- Configuring the Boot Drive 62
- Hard Drives 62
- Installing a Hard Drive 63
- Getting Help 65
- AutoTech Service 66
- Technical Support Service 66
- Problems With Your Order 67
- Product Information 67
- Before You Call 67
- Contacting Dell 68
- Notes, Notices, and Cautions 76
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