Dell PowerEdge 750 Troubleshooting Guide

Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Introduction Indicators, Messages, and Codes Finding Software Solutions Running th

Back to Contents Page Abbreviations and Acronyms Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide A ampere(s) AC alternatin

DMA direct memory access DMI desktop management interface dpi dots per inch DRAM dynamic random-access memory DRAC III/XT Dell Remote Access

FCC Federal Communications Commission ft feet g gram(s) GB gigabyte(s) GUI graphical user interface Hz hertz I/O input/output ID ident

kilogram(s) kHz kilohertz L2 Level 2 LAN local area network lb pound(s) LED light-emitting diode LVD low voltage differential m meter(s

MS-DOS®Microsoft®Disk Operating System mV millivolt(s) NAS network attached storage NIC network interface controller NIS network information

RAID redundant array of independent disks RAM random-access memory RAS remote access services ROM read-only memory rpm revolutions per minut

UPS uninterruptible power supply UTP unshielded twisted pair V volt(s) VAC volt(s) alternating current VDC volt(s) direct current VGA vide

Back to Contents Page Introduction Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Other Documents You May Need Obtaining T

Back to Contents Page Indicators, Messages, and Codes Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Front-Panel Indicators

Table 2-1. Front-PanelIndicatorCodes l The power button provides the ability to soft switch the power cycling to the system. l The two system i

Back to Contents Page Jumpers, Switches, and Connectors Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Jumpers—A General Exp

Table 2-2. Back-Panel LED Codes System Messages System messages appear on the screen to notify you of a possible problem with the system. Table

Alert! DIMM(s) n are unsupported. memory module(s). Guidelines" in "Installing System Components." If the problem persist, see "T

Diskette write protected Diskette write-protect feature enabled. Move the write-protect tab on the diskette to disable the write-protect feature.

Memory double word logic failure at address, read value expecting value Memory odd/even logic failure at start address to end address Memory writ

ROM bad checksum = address Faulty or improperly installed expansion card. Remove and reseat the expansion cards. See "Troubleshooting Expans

System Beep Codes If an error that cannot be reported on the screen occurs during POST, the system may emit a series of beeps that identifies the pro

Warning Messages A warning message alerts you to a possible problem and prompts you to respond before the system continues a task. For example, befo

Back to Contents Page Finding Software Solutions Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Before You Begin Troublesh

Application Conflicts Some applications can leave unnecessary files or data behind after they are deleted from your system. Device drivers can also

Back to Contents Page Running the System Diagnostics Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Using Server Administrat

 Table A-1.SystemBoardJumperSettings System Board Connectors See FigureA-3 and TableA-2 for the location and description of the system bo

 From the Utility Partition 1. As the system boots, press <F10> during POST. 2. From the utility partition main menu under Run System Uti

l The right side of the screen under Devices for Highlighted Group lists the specific devices within a particular test group. l The menu area consi

Back to Contents Page Troubleshooting Your System Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Safety First—For You and Yo

Checking the Equipment This section provides troubleshooting procedures for external devices attached to the system, such as the monitor, keyboard,

If the test fails, continue to the next step. 2. Determine whether the system has monitors attached to both the front and back video connectors. 

If the problem is resolved, replace the faulty mouse. See "Getting Help." 5. Enter the System Setup program and ensure that the USB ports

Problem l System message indicates a problem with a USB device. l Device connected to a USB port is not operating properly. Action 1. Enter the

RespondingtoaSystemsManagementSoftwareAlertMessage Systems management software monitors critical system voltages and temperatures, fans, and

2. Observe the precautions in "Safety First—For You and Your System." 3. Turn off the system and attached peripherals, and disconnect

Troubleshooting a Wet System Problem l Liquid spilled on the system. l Excessive humidity. Action  1. Turn off the system and attached periphe

Riser Board Connectors See FigureA-4 and TableA-3 for the location and description of the backplane board connectors. Figure A-4. Riser Board Con

Troubleshooting the System Battery Problem l System message indicates a problem with the battery. l System Setup program loses system configurati

Action Ensure that none of the following conditions exist: l Ambient temperature is too high. l External airflow is obstructed. l Cables inside

5. Open the system. See "Opening the System." 6. Ensure that the diskette drive interface cable is securely connected to the diskette dr

If the problem is not resolved, see "Getting Help." Troubleshooting a SATA Hard Drive Problem l Faulty hard drive. l Damaged or imprope

1. Run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" in "Running System Diagnostics." I

If the problem persists, continue to the next step. 6. Open the system. See "Opening the System." 7. Remove all expansion cards install

If the amount of memory installed does not match the system memory setting, then perform the following steps: a. Turn off the system and attached per

l Error message indicates a system board problem. Action 1. Open the system. See "Opening the System." 2. Remove the expansion cards,

Back to Contents Page Installing System Components Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide System Board Components 

Cooling Shroud The cooling shroud covers the processor and system battery. The shroud also directs air flow to the expansion cards and system memory.

The existing passwords are not disabled (erased) until the system boots with the password jumper plug removed. However, before you assign a new syste

5. Grasp the battery socket release tab with your fingers and gently pull out away from the battery to remove the battery from the battery socket. Se

Installing a Fan Assembly 1. Align the holes in the fan assembly with the two fan assembly securing posts. 2. Lower the fan assembly until the

Installing the Power Supply 1. Lower the power supply into the chassis and slide it backward until the four pins on the power supply are engaged

6. Connect any internal or external cable(s) to the expansion card. 7. Close the system. See "Closing the System" in "Troubleshooti

 Installing the Riser Board  1. Slide the riser board onto the system board. See Figure6-7. 2. Tighten the two captive screws that secure t

l A bank must contain identical memory modules. l Install the memory modules in bank 1 (DIMM1_x)beforeinstallingmemorymodulesinbank2(DIMM2

Removing Memory Modules  1. Open the system. See "Opening the System" in Troubleshooting Your System." 2. Locate the memory modu

 6. Remove the heat sink. a. Gently rotate the heat sink side-to-side before lifting the heat sink from the processor. b. If the processor i

 If the release lever on the processor socket is not positioned all the way up, move it to that position. With the pin-1 corners of the processor

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Back to Contents Page I/O Connectors Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide I/O Connectors Serial Connector PS/2

Back to Contents Page Installing Drives Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide CD and Diskette Drives (Optional) S

Installing the Optional CD Drive 1. Align the CD drive's mounting holes with the retaining pins on the hard drive 0 bracket. See Figure7-1.

When you disconnect an interface cable, take care to grasp the cable connector, rather than the cable itself, to avoid stress on the cable. SCSI ID N

The interface cables for SATA hard drives are connected to the system board. See FigureA-3 for the location of the system board connectors. The inte

Install the CD drive if you are removing hard drive 0. See "Installing the Optional CD Drive." Install the optional diskette drive if you

Back to Contents Page Getting Help Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Technical Assistance Dell Enterprise Tra

www.dell.com/la (Latin American countries) www.dell.ca (Canada only) l Anonymous file transfer protocol (FTP) ftp.dell.com/ Log in as user:anony

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the computer. You may be asked to type some commands at the keyboard, relay detailed information during operations, or try other troubleshooting steps

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Serial Connector Autoconfiguration The default designation of the integrated serial connector is COM1. When you add an expansion card containing a s

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Back to Contents Page Dell™PowerEdge™750SystemsInstallationandTroubleshootingGuide Notes, Notices, and Cautions Abbreviations and Acronyms

Video Connector You can attach a VGA-compatible monitor to the system's integrated video controller using a 15-pin high-density D-subminiature

Table B-5. USB Connector Pin Assignments Integrated Network Adapter Connector The system's integrated network adapters function as separate ne