Dell 100-Mbps manual Observing the Boot Routine

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8.Inspect the exterior of the system unit, including all controls and indica- tors, and all user-accessible data storage devices for any signs of physical damage.

Does the inspection reveal any problems?

Yes. Proceed to the appropriate procedure in Chapter 4, “Removing and Replacing Parts.”

No. Proceed to the next section, “Observing the Boot Routine.”

Observing the Boot Routine

After you have performed an external visual inspection as described in the pre- vious section, you should boot the system and, while the boot routine is running, observe the system for any indications of problems.

NOTE: Most of the steps in this procedure require observation of system func- tions and indications, some of which can occur simultaneously. It may be necessary to reboot the system several times in order to complete all of these steps.

To observe problem indications during the boot routine, follow these steps:

1.Insert the diagnostics diskette into drive A. Turn on all peripherals and the system unit. If the system unit is already on, press the reset button or <Ctrl><Alt><Del> to reboot the system.

2.Check the power supply fan. Does the fan run normally? Yes. Proceed to step 3.

No. Troubleshoot the system power supply.

3.Watch the Num Lock, Caps Lock, and Scroll Lock indicators on the upper-right corner of the keyboard. After all three indicators flash momentarily, the Num Lock indicator should light up and remain on.

Do these indicators flash on and off within approximately ten seconds after the boot routine starts?

Yes. Proceed to step 4.

No. Troubleshoot the system power supply. If the troubleshooting pro- cedure indicates that the system power supply is operational, troubleshoot the memory.

4.During the boot routine, observe the system unit for any of the following:

Diskette-drive and hard-disk drive access indicators: These indicators light up in response to data being transferred to or from the drives. If either of these indicators fails to light up during the boot routine, trouble- shoot the diskette drive or hard-disk drive subsystem, as appropriate.

Basic Troubleshooting

2-3

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Contents 659,&0$18$ Page Contents Chapter Beep Codes and Error Messages Chapter Basic TroubleshootingChapter Removing and Replacing Parts Figures Index16. Expansion-Card Cage Removal TablesPage Read This First System Overview System Features System Unit Orientation Front-Panel Features Advanced Expansion Subsystem Dual-Processor CapabilityPCI Video Card Hard-Disk Drive OptionsEnhanced Dual-Interface Eide Subsystem Audio ControllerThermal Monitoring Desktop ChassisSmart Support System Power SupplyPin Assignments for the DC Power Connectors System UnitDC Power Connector P1 DC Power Connector P7 DC Power DistributionPower Distribution Video Memory System Board LayoutSystem Board Jumpers Main MemoryJumper Descriptions Interrupt AssignmentsIRQ14 DMA Channel AssignmentsTechnical Specifications Technical SpecificationsNIC CtrlAltEnter To 149 F Page Initial User Contact Basic TroubleshootingExternal Visual Inspection Observing the Boot Routine Internal Visual Inspection Eliminating Resource Conflicts Running the Diskette-Based DiagnosticsGetting Help Post Beep Codes Beep Codes and Error MessagesPost Beep Codes Halted System Error MessagesSystem Error Messages System could not suc System Setup program Incorrect configuration During memory test Faulty or improperly System does not recog Faulty diskette, diskette MS-DOS unable to Defective sectors on dis At system start-up One or both micro Recommended Tools Removing and Replacing PartsProtection of the Equipment Precautionary MeasuresPull the floor stand away from the system unit Floor StandSystem-Unit Cover Removal System Unit CoverEject, Power, and Reset Button Removal Eject, Power, and Reset ButtonsFront-Panel Insert Removal Front-Panel InsertsIndicator Card Removal Indicator CardSpeaker Removal SpeakerDrive Hardware Drives5-Inch Diskette Drive Removal Drives in the Drive Cage10 .25-Inch Drive Removal Lift the hard-disk drive bracket out of the system unit Hard-Disk Drives12. Hard-Disk Drive Removal 13. Power Supply Removal System Power Supply14. Microprocessor Fan Removal Microprocessor Fan15. System Board Components System Board ComponentsExpansion-Card Cage Expansion Cards17. Expansion-Card Removal Expansion Card18. Riser Board Removal Riser Board19. Dimm Removal DIMMs21. Microprocessor Securing Clip Microprocessor/Heat Sink Assembly22. Microprocessor Removal Terminator Card Terminator or Add-In Card24. Add-In Card Removal Add-In CardRemove the battery System BatteryRemove the system board as follows System BoardSystem Setup Program USB System Setup ScreensTable A-1. System Setup Categories Be shadowed or cached. If video problems Check the monitor documentation to make Table A-1. System Setup Categories Index Dskt connector, 1-12,4-16dual-processing,1-5 ECC DIMMs LINE-IN connector, 1-12,4-16 USB description Location, 1-4,1-12