Dell PowerEdge 750 Troubleshooting Guide Page 4
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- TROUBLESHOOTING
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Riser Board Connectors
See FigureA-4 and TableA-3 for the location and description of the backplane board connectors.
Figure A-4. Riser Board Connectors
Table A-3.RiserBoardConnectors
Disabling a Forgotten Password
The system's software security features include a system password and a setup password, which are discussed in detail in "Using the System Setup Program"
in your User's Guide. The password jumper enables these password features or disables them and clears any password(s) currently in use.
1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See "Opening the System" in "Troubleshooting Your System."
3. Remove the password jumper plug.
See FigureA-2 to locate the password jumper on the system board.
4. Close the system. See "Closing the System" in "Troubleshooting Your System."
5. Reconnect the system to the electrical outlet, and turn on the system.
BT1
Connector for the 3.0 V coin battery
CN2
12 V and 3.3 V power connector for the system board
CN3
+5 V and -12 V power connector for the system board
CN4
Daughter card connector (not supported)
DIMMn_ x
Memory modules (4)
J7
Control panel interface connector
Sys_Mgmt
Connector for the remote access controller (RAC)
Fan
Power connector for the fan assembly
Pri-IDE
CD drive interface connector
SATA_PORT_n
Connectors for the SATA hard drives
SLT1
Riser board interface connector
Connector
Description
Upper slot PCI 32-bit, 33 MHz (5V)
The RAC must be installed in the upper slot.
Lower slot PCI-X 64-bit, 66 MHz (3.3V)
For optimal performance, install RAID and SCSI controllers in the lower slot.
System board
System board interface connector.
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.
- 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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