Dell OptiPlex Gxi User Manual

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xFigure 5-8. 5.25-Inch Drive Assembly Removal . . . . . . . . . . . . . . . . . . . 5-10Figure 5-9. 5.25-Inch Drive Removal . . . . . . . . . . . . .

5-14Dell OptiPlex GXi Systems Service ManualSystem Board ComponentsThe subsections that follow Figure 5-13 contain procedures for removing sys-tem boa

Removing and Replacing Parts on the Midsize Chassis 5-15Expansion CardsThe computer has a removable expansion-card cage. The expansion-card cage conta

5-16Dell OptiPlex GXi Systems Service ManualExpansion CardFigure 5-15. Expansion-Card RemovalTo remove an expansion card, follow these steps:1. Disco

Removing and Replacing Parts on the Midsize Chassis 5-17Riser Board Figure 5-16. Riser Board RemovalTo remove the riser board, follow these steps:1.

5-18Dell OptiPlex GXi Systems Service ManualDIMMsFigure 5-17. DIMM RemovalTo remove a DIMM, follow these steps:1. Unlatch and rotate the power supply

Removing and Replacing Parts on the Midsize Chassis 5-19Cache Memory CardFigure 5-19. Cache-Memory Card RemovalTo remove the cache memory card, follo

5-20Dell OptiPlex GXi Systems Service ManualNIC Daughter BoardFigure 5-20. NIC Daughter-Board RemovalTo remove the NIC daughter board, do the followi

Removing and Replacing Parts on the Midsize Chassis 5-21Microprocessor/Heat Sink AssemblyFigure 5-21. Microprocessor Securing-Clip RemovalTo remove t

5-22Dell OptiPlex GXi Systems Service ManualFigure 5-22. Microprocessor RemovalIf the heat sink and microprocessor are separate, look at the bottom s

Removing and Replacing Parts on the Midsize Chassis 5-23System BatteryFigure 5-23. System Battery RemovalTo remove the system battery, follow these s

xiFigure 6-22. NIC Daughter-Board Removal . . . . . . . . . . . . . . . . . . . . . . . 6-22Figure 6-23. Microprocessor Securing-Clip Removal . . . .

5-24Dell OptiPlex GXi Systems Service ManualSystem BoardFigure 5-24. System Board RemovalTo remove the system board, follow these steps:1. Unlatch an

Removing and Replacing Parts on the Mini Tower Chassis 6-1Chapter 6Removing and Replacing Parts on the Mini Tower ChassisThis chapter provides procedu

6-2Dell OptiPlex GXi Systems Service ManualPrecautionary Measures Before you perform any of the procedures in this chapter, take a few moments to read

Removing and Replacing Parts on the Mini Tower Chassis 6-3Computer CoverFigure 6-1. Computer Cover RemovalTo remove the computer cover, follow these

6-4Dell OptiPlex GXi Systems Service ManualFront Bezel Figure 6-2. Front Bezel Removal To remove the front bezel, follow these steps:1. Press the ta

Removing and Replacing Parts on the Mini Tower Chassis 6-5Eject, Power, and Reset Buttons Figure 6-3. Eject, Power, and Reset Button Removal To remo

6-6Dell OptiPlex GXi Systems Service ManualFront-Panel InsertsFigure 6-4. 5.25-Inch Front-Panel Insert Removal To remove a 5.25-inch front-panel inse

Removing and Replacing Parts on the Mini Tower Chassis 6-7Figure 6-5. 3.5-Inch Front-Panel Insert Removal To remove a 3.5-inch front-panel insert, fo

6-8Dell OptiPlex GXi Systems Service ManualControl PanelFigure 6-6. Control-Panel RemovalTo remove the control panel, follow these steps:1. Remove th

Removing and Replacing Parts on the Mini Tower Chassis 6-9DrivesFigure 6-7 shows an example of drive hardware that can be installed in the com-puter.

Read This FirstWarnings, Cautions, and NotesThroughout this manual, there may be blocks of text printed in bold type or in italic type. These blocks

6-10Dell OptiPlex GXi Systems Service ManualExternally Accessible Drive AssembliesFigure 6-8. 3.5-Inch Drive Assembly RemovalTo remove the 3.5-inch d

Removing and Replacing Parts on the Mini Tower Chassis 6-11Figure 6-9. 3.5-Inch Diskette Drive RemovalWhen you replace the 3.5-inch diskette drive, b

6-12Dell OptiPlex GXi Systems Service ManualTo remove a 5.25-inch drive assembly from the middle or lower drive bay, fol-low these steps:1. Disconnect

Removing and Replacing Parts on the Mini Tower Chassis 6-13Hard-Disk Drive BracketFigure 6-12. Hard-Disk Drive Bracket Removal To remove the hard-d

6-14Dell OptiPlex GXi Systems Service ManualHard-Disk DriveFigure 6-13. Hard-Disk Drive RemovalTo remove a hard-disk drive, follow these steps:1. Rem

Removing and Replacing Parts on the Mini Tower Chassis 6-15System Power SupplyFigure 6-14. System Power-Supply RemovalTo remove the system power supp

6-16Dell OptiPlex GXi Systems Service ManualSystem Board ComponentsThe subsections that follow Figure 6-15 contain procedures for removing sys-tem boa

Removing and Replacing Parts on the Mini Tower Chassis 6-17Expansion CardsThe computer has a removable expansion-card cage. The expansion-card cage co

6-18Dell OptiPlex GXi Systems Service ManualExpansion CardFigure 6-17. Expansion-Card RemovalTo remove an expansion card, follow these steps:1. Disco

Removing and Replacing Parts on the Mini Tower Chassis 6-19Riser Board Figure 6-18. Riser Board RemovalTo remove the riser board, follow these steps:

xiiiDELL CONFIDENTIAL Preliminary 6/16/97FiguresFigure 1-1. Computer Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-20Dell OptiPlex GXi Systems Service ManualDIMMsFigure 6-19. DIMM RemovalTo remove a DIMM, follow these steps:1. Unlatch and rotate the power supply

Removing and Replacing Parts on the Mini Tower Chassis 6-21Cache Memory CardFigure 6-21. Cache-Memory Card RemovalTo remove the cache memory card, fo

6-22Dell OptiPlex GXi Systems Service ManualNIC Daughter BoardFigure 6-22. NIC Daughter-Board RemovalTo remove the NIC daughter board, do the followi

Removing and Replacing Parts on the Mini Tower Chassis 6-23Microprocessor/Heat Sink AssemblyFigure 6-23. Microprocessor Securing-Clip RemovalTo remov

6-24Dell OptiPlex GXi Systems Service ManualFigure 6-24. Microprocessor RemovalIf the heat sink and microprocessor are separate, look at the bottom s

Removing and Replacing Parts on the Mini Tower Chassis 6-25System BatteryFigure 6-25. System Battery RemovalTo remove the system battery, follow thes

6-26Dell OptiPlex GXi Systems Service ManualSystem BoardFigure 6-26. System Board RemovalTo remove the system board, follow these steps:1. Remove the

System Setup Program A-1Appendix ASystem Setup ProgramThis appendix describes the System Setup program, which is used to change the system configurati

A-2Dell OptiPlex GXi Systems Service ManualSystem Setup ScreensFigure A-1. System Setup ScreensAlt-P next Keyboard Errors: System Password: Password

System Setup Program A-3Table A-1. System Setup CategoriesCategory FunctionTime Resets time on computer’s internal clock.Date Resets date on computer

xivDELL CONFIDENTIAL Preliminary 6/16/97Figure 4-16. Cache-Memory Card Removal . . . . . . . . . . . . . . . . . . . . . . . 4-17Figure 4-17.

A-4Dell OptiPlex GXi Systems Service ManualCPU Speed Indicates processor speed at which system boots — the processor’s rated speed or a slower compati

System Setup Program A-5Serial Port Configures system’s built-in serial port.Parallel Port Configures system’s built-in parallel port. The port’s I/O

A-6Dell OptiPlex GXi Systems Service Manual

Index 1IndexNumbers3.5-inch diskette drive removal, 4-8, 5-9,6-113.5-inch drive assembly removal, 6-105.25-inch drive assembly removal, 4-9,5-10, 6-11

2Dell OptiPlex GXi Systems Service ManualEEIDE subsystem, 1-10eject button removal, 4-4, 5-5, 6-5error messages, list of, 3-4expansion subsystem, 1-7e

Index 3PPCI expansion-card connectorslow-profile computer, 1-7midsize computer, 1-8mini tower computer, 1-9Plug and Play expansion cards, 1-7POST beep

®www.dell.comPrinted in the U.S.A.P/N 50560 Rev. A01

xvDELL CONFIDENTIAL Preliminary 6/16/97Figure 6-9. 3.5-Inch Diskette Drive Removal . . . . . . . . . . . . . . . . . . . . . 6-11Figure 6-10.

xviDELL CONFIDENTIAL Preliminary 6/16/97

xviiDELL CONFIDENTIAL Preliminary 6/16/97TablesTable 1-1. DC Voltage Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

xviiiDELL CONFIDENTIAL Preliminary 6/16/97

System Overview 1-1Chapter 1System OverviewThe Dell® OptiPlex® GXi systems are high-speed, upgradable, desktop com-puters. The Dell OptiPlex GXi syste

1-2Dell OptiPlex GXi Systems Service ManualSystem Features In addition to the standard features found in a traditional personal computer, the Dell Opt

System Overview 1-3Figure 1-1. Computer Orientation right sideleft sidefrontbackleft sidefrontright sidebackLow-Profile Computer Midsize ComputerMin

1-4Dell OptiPlex GXi Systems Service ManualFigure 1-2. Front-Panel Featuresdiskette-drive access indicatorreset button hard-disk drive access indicat

System Overview 1-5Figure 1-3. Internal View of the Low-Profile ComputerCAUTION: To avoid possible data or file structure corruptions, thefront-panel

1-6Dell OptiPlex GXi Systems Service ManualFigure 1-4. Internal View of the Midsize Computerparallel port connectorpower supplyvoltage selection swit

System Overview 1-7Figure 1-5. Internal View of the Mini Tower ComputerAdvanced Expansion Subsystem The Dell OptiPlex GXi systems offer advanced expa

1-8Dell OptiPlex GXi Systems Service ManualFigure 1-6. Riser Board for the Low-Profile ComputersMidsize Computer’s Expansion-Card Slots The midsiz

System Overview 1-9Figure 1-8. Riser Board for the Midsize Computers (Option 2)Mini Tower Computer’s Expansion-Card Slots The mini tower computers

1-10Dell OptiPlex GXi Systems Service ManualHard-Disk Drive OptionsThe following subsections provide service-related information about hard-disk drive

System Overview 1-11microprocessor is much faster. The PCI bus operates at a frequency of 33 MHz as opposed to the 8.25-MHz operating frequency of the

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1-12Dell OptiPlex GXi Systems Service ManualChapter 4, “Using Integrated Devices,” in the Reference and Installation Guide provides instructions for c

System Overview 1-13Table 1-1. DC Voltage RangesVoltage RangeMaximum Output Current1+3.3 VDC +3.15 to +3.45 VDC12.0 A1 (low-profile computers)14.0 A1

1-14Dell OptiPlex GXi Systems Service ManualPin Assignments for the DC Power Connectors The power-supply output voltages can be measured at the back (

System Overview 1-15Figure 1-13. DC Power Connectors P2 (Low-Profile) and P7DC Power DistributionFigures 1-14 through 1-19 provide the following info

1-16Dell OptiPlex GXi Systems Service ManualFigure 1-15. DC Power Distribution for the Low-Profile Computers–5 VDCfusecore VCC +2.1 to +3.5 VDC+3.3 V

System Overview 1-17Figure 1-16. DC Power Cables for the Midsize and Mini Tower Computers P7P9*P5P4P3P2P1* Connector P6 was not present in earlier m

1-18Dell OptiPlex GXi Systems Service ManualFigure 1-17. DC Power Distribution for the Midsize Computers –12 VDCpower management logic P7+3.3 V

System Overview 1-19 Figure 1-18. DC Power Distribution for the Mini Tower Computers –12 VDCpower management logic P7+3.3 VDCPOWER1systempower

1-20Dell OptiPlex GXi Systems Service ManualSystem Board The subsections that follow provide service-related information about the sys-tem board and c

System Overview 1-21Main Memory The four DIMM sockets on the system board can accommodate combinations of 8-, 16-, 32-, 64-, and 128-MB DIMMs up to

Information in this document is subject to change without notice. 1996–1997 Dell Computer Corporation. All rights reserved.Reproduction in any manne

1-22Dell OptiPlex GXi Systems Service ManualTable 1-2. System-Board Jumper DescriptionsJumper Description Settings100*Reserved Do not install jumper.

System Overview 1-23Interrupt AssignmentsTable 1-3. Interrupt AssignmentsIRQ Line Used By/AvailableIRQ0 Generated by system timer.IRQ1 Generated by

1-24Dell OptiPlex GXi Systems Service ManualDMA Channel AssignmentsTable 1-4. DREQ Line AssignmentsDREQ Line Used By/AvailableDREQ0 AvailableDREQ1 Av

System Overview 1-25Technical Specifications zTable 1-5. Technical Specifications MicroprocessorMicroprocessor type . . . . . . . Intel Pentium

1-26Dell OptiPlex GXi Systems Service ManualExpansion Bus (continued)ISA expansion-card connectors:Low-profile computers . . . two (one ISA connector

System Overview 1-27Drives (continued)Internal hard-disk drive bays:Low-profile computers . . . one bay for a 1-inch-high EIDE or SCSI hard-disk drive

1-28Dell OptiPlex GXi Systems Service ManualPorts (continued)Internally accessible:EIDE hard-disk drive . . . two 40-pin connectors on PCI local busD

System Overview 1-29Power (continued)Power-supply heat dissipation:Low-profile computers . . . 808 BTUs (nominal)Midsize computers . . . . . 913 BTUs

1-30Dell OptiPlex GXi Systems Service ManualEnvironmental (continued)Maximum vibration:Operating . . . . . . . . . . . . 0.25 G at 3 to 200 Hz at 1 o

Basic Troubleshooting 2-1Chapter 2Basic TroubleshootingThis chapter describes basic troubleshooting procedures that can help you diagnose a system pro

vContentsChapter 1System Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1System Features . . . . . . . . . . . . . . . . .

2-2Dell OptiPlex GXi Systems Service ManualExternal Visual InspectionThe external visual inspection consists of a quick inspection of the exterior of

Basic Troubleshooting 2-38. Inspect the exterior of the computer, including all controls and indica-tors, and all user-accessible data storage devices

2-4Dell OptiPlex GXi Systems Service Manual4. During the boot routine, observe the system for any of the following:•Diskette-drive and hard-disk drive

Basic Troubleshooting 2-53. Verify that all chips, DIMMs, and expansion cards are fully seated in their sockets or connectors.To ensure that the chips

2-6Dell OptiPlex GXi Systems Service ManualEliminating Resource ConflictsDevices within the computer may require dedicated memory spaces, interrupt le

Beep Codes and Error Messages 3-1Chapter 3Beep Codes and Error MessagesThis chapter describes beep codes and system error messages that can occur duri

3-2Dell OptiPlex GXi Systems Service ManualTable 3-1. POST Beep Codes Beep Code Error Probable Causes1-3 Monitor not detected Disconnected or faulty

Beep Codes and Error Messages 3-33-3-4 3-4-13-4-2Screen initialization failureScreen-retrace test failure Search for video ROM failureFaulty video sub

3-4Dell OptiPlex GXi Systems Service ManualSystem Error MessagesTable 3-2 lists (in alphabetical order) system error messages that can appear on the m

Beep Codes and Error Messages 3-5Table 3-2. System Error MessagesMessage Definition Probable CausesAddress mark not foundBIOS found faulty disk secto

viChapter 2Basic Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Initial User Contact . . . . . . . . . . . . . . . . . . . .

3-6Dell OptiPlex GXi Systems Service ManualDiskette sub-system reset failedSystem could not suc-cessfully issue reset command to diskette controller.F

Beep Codes and Error Messages 3-7Keyboard data line failureKeyboard stuck key failureSystem cannot commu-nicate with keyboard.Keyboard cable connec-to

3-8Dell OptiPlex GXi Systems Service ManualNo boot device avail-ableSystem does not recog-nize diskette drive or hard-disk drive from which it is tryi

Beep Codes and Error Messages 3-9Seek error MS-DOS unable to locate specific track on diskette or hard-disk drive.Defective diskette or hard-disk driv

3-10Dell OptiPlex GXi Systems Service Manual

Removing and Replacing Parts on the Low-Profile Chassis 4-1Chapter 4 Removing and Replacing Parts on the Low-Profile ChassisThis chapter provides proc

4-2Dell OptiPlex GXi Systems Service ManualPrecautionary Measures Before you perform any of the procedures in this chapter, take a few moments to read

Removing and Replacing Parts on the Low-Profile Chassis 4-3Computer CoverFigure 4-1. Computer Cover RemovalTo remove the computer cover, follow these

4-4Dell OptiPlex GXi Systems Service ManualEject, Power, and Reset Buttons Figure 4-2. Eject, Power, and Reset Button Removal To remove the eject

Removing and Replacing Parts on the Low-Profile Chassis 4-5Front-Panel InsertsFigure 4-3. Front-Panel Insert Removal To remove a front-panel insert,

viiMicroprocessor/Heat Sink Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19System Battery . . . . . . . . . . . . . . . . . . . .

4-6Dell OptiPlex GXi Systems Service ManualControl PanelFigure 4-4. Control-Panel RemovalTo remove the control panel, follow these steps:1. Disconnec

Removing and Replacing Parts on the Low-Profile Chassis 4-7DrivesFigure 4-5 shows an example of drive hardware that can be installed in the com-puter.

4-8Dell OptiPlex GXi Systems Service Manual3.5-Inch Diskette Drive AssemblyFigure 4-6. 3.5-Inch Diskette Drive RemovalTo remove the 3.5-inch diskette

Removing and Replacing Parts on the Low-Profile Chassis 4-95.25-Inch Drive AssemblyFigure 4-7. 5.25-Inch Drive Assembly RemovalTo remove a 5.25-inch

4-10Dell OptiPlex GXi Systems Service ManualHard-Disk Drive AssemblyFigure 4-8. Hard-Disk Drive Assembly Removal To remove the hard-disk drive, fol

Removing and Replacing Parts on the Low-Profile Chassis 4-11System Power SupplyFigure 4-9. System Power-Supply RemovalTo remove the system power supp

4-12Dell OptiPlex GXi Systems Service ManualSystem Board ComponentsThe subsections that follow Figure 4-10 contain procedures for removing sys-tem boa

Removing and Replacing Parts on the Low-Profile Chassis 4-13Expansion CardsThe computer has a removable expansion-card cage. The expansion-card cage c

4-14Dell OptiPlex GXi Systems Service ManualExpansion CardFigure 4-12. Expansion-Card RemovalTo remove an expansion card, follow these steps:1. Disco

Removing and Replacing Parts on the Low-Profile Chassis 4-15Riser Board Figure 4-13. Riser Board RemovalTo remove the riser board, follow these steps

viiiEject, Power, and Reset Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5Front-Panel Inserts . . . . . . . . . . .

4-16Dell OptiPlex GXi Systems Service ManualDIMMsFigure 4-14. DIMM RemovalTo remove a DIMM, push outward on the DIMM socket’s securing clips until th

Removing and Replacing Parts on the Low-Profile Chassis 4-17Cache Memory CardFigure 4-16. Cache-Memory Card RemovalTo remove the cache memory card, r

4-18Dell OptiPlex GXi Systems Service ManualNIC Daughter BoardFigure 4-17. NIC Daughter-Board RemovalTo remove the NIC daughter board, do the followi

Removing and Replacing Parts on the Low-Profile Chassis 4-19Microprocessor/Heat Sink AssemblyFigure 4-18. Microprocessor Securing-Clip Removal To rem

4-20Dell OptiPlex GXi Systems Service ManualFigure 4-19. Microprocessor RemovalIf the heat sink and microprocessor are separate, look at the bottom s

Removing and Replacing Parts on the Low-Profile Chassis 4-21System BatteryFigure 4-20. System Battery RemovalTo remove the system battery, follow the

4-22Dell OptiPlex GXi Systems Service ManualSystem BoardFigure 4-21. System Board RemovalTo remove the system board, follow these steps:1. Disconnect

Removing and Replacing Parts on the Midsize Chassis 5-1Chapter 5Removing and Replacing Parts on the Midsize ChassisThis chapter provides procedures fo

5-2Dell OptiPlex GXi Systems Service ManualPrecautionary Measures Before you perform any of the procedures in this chapter, take a few moments to read

Removing and Replacing Parts on the Midsize Chassis 5-3Floor StandFigure 5-1. Floor Stand RemovalTo remove the floor stand, follow these steps:1. Pla

ixFigure 1-12. DC Power Connectors P2 (Midsize and Mini Tower), P3, P4, P5, P6, and P9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

5-4Dell OptiPlex GXi Systems Service ManualComputer CoverFigure 5-2. Computer Cover RemovalTo remove the computer cover, follow these steps:1. Remove

Removing and Replacing Parts on the Midsize Chassis 5-5Eject, Power, and Reset Buttons Figure 5-3. Eject, Power, and Reset Button Removal To remove

5-6Dell OptiPlex GXi Systems Service ManualFront-Panel InsertsFigure 5-4. Front-Panel Insert Removal To remove a front-panel insert, follow these ste

Removing and Replacing Parts on the Midsize Chassis 5-7Control PanelFigure 5-5. Control-Panel RemovalTo remove the control panel, follow these steps:

5-8Dell OptiPlex GXi Systems Service ManualDrivesFigure 5-6 shows an example of drive hardware that can be installed in the com-puter. Refer to this f

Removing and Replacing Parts on the Midsize Chassis 5-9Externally Accessible Drive AssembliesFigure 5-7. 3.5-Inch Diskette Drive RemovalTo remove the

5-10Dell OptiPlex GXi Systems Service ManualFigure 5-8. 5.25-Inch Drive Assembly RemovalTo remove a 5.25-inch drive assembly from the middle or lower

Removing and Replacing Parts on the Midsize Chassis 5-11Hard-Disk Drive BracketFigure 5-10. Hard-Disk Drive Bracket Removal To remove the hard-disk

5-12Dell OptiPlex GXi Systems Service ManualHard-Disk DriveFigure 5-11. Hard-Disk Drive RemovalTo remove a hard-disk drive, follow these steps:1. Rem

Removing and Replacing Parts on the Midsize Chassis 5-13System Power SupplyFigure 5-12. System Power-Supply RemovalTo remove the system power supply,