Dell 6100, 200 Troubleshooting a Damaged Computer, Let the computer dry for at least 24 hours

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2.Remove the computer covers.

See “Removing the Computer Covers” earlier in this chapter.

CAUTION: See “Protecting Against Electrostatic Discharge” in the safety instructions at the front of this guide.

3.Let the computer dry for at least 24 hours.

Make sure that it is thoroughly dry before proceeding.

4.Remove all expansion cards, the microprocessor module(s), and the memory module installed in the computer.

See “Removing an Expansion Card” in Chapter 8.

5.Replace the computer covers, reconnect the sys- tem to AC power, and turn it on.

Does the system have power? Yes. Continue to step 6.

No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

6.Turn off the system, disconnect it from AC power, remove the left computer cover, and reinstall the items you removed in step 4.

7.Replace the computer cover, and reconnect the system to AC power.

8.Run the System Set Test Group in the system diagnostics.

See Chapter 5, “Running the System Diagnostics.” Do the tests complete successfully?

Yes. The system is operating properly.

No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

Troubleshooting a Damaged Computer

If the computer was dropped or damaged, you should check the computer to see if it functions properly. If an

external device attached to the computer is dropped or damaged, contact the manufacturer of the device for instructions or see Chapter 11, “Getting Help,” for infor- mation on obtaining technical assistance from Dell. Follow these steps to troubleshoot a damaged computer:

1.Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources.

2.Remove the left computer cover.

See “Removing the Computer Covers” earlier in this chapter.

CAUTION: See “Protecting Against Electrostatic Discharge” in the safety instructions at the front of this guide.

3.Check all the board and card connections in the computer.

Check the following connections:

Expansion-card connections to the system board

Drive carrier connections to the SCSI backplane board

Microprocessor module(s) connections to the system board

Memory module connection to the system board

4.Verify all internal cable and component connections.

Make sure that all cables are properly connected and that all components are properly seated in their con- nectors and sockets.

5.Replace the left computer cover and reconnect the system to AC power.

6.Run the System Set Test Group in the system diagnostics.

See Chapter 5, “Running the System Diagnostics.” Do the tests complete successfully?

Yes. The system is operating properly.

No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

Checking Inside the Computer

7-7

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Contents 167$//$7,21$17528%/6+227,1**8 Page Safety Instructions When Working Inside the ComputerProtecting Against Electrostatic Discharge When Using the Computer System About This Guide PrefaceNotational Conventions Other Documentation You May NeedExamples autoexec.bat and c\windows Typographical ConventionsPage Contents Chapter Running the System Diagnostics Chapter Checking the Equipment Chapter Installing System Board Options Chapter Installing Drives in the External Bays Before You Call Figures Figure B-1 Column x 25-Line Character Set Subtest Screen Tables Page Dell Confidential Preliminary 12/17/96 Xxiv Is the computer wet or damaged? Checking the BasicsBacking Up Files Basic ChecksRun the system diagnostics as described in Chap- ter Checking Connections and SwitchesBack Panel Features Is the monitor operating properly? Yes. Continue to step Turn on the systemIs the mouse or printer operating properly? Boot Routine IndicationsLook and Listen Is the keyboard operating properly? Yes. Continue to stepSystem Configuration Utility System Setup ProgramMessages and Codes System MessagesSystem Messages CodeMessage System Messages System Beep Codes System Beep CodesAlert Log Messages From the Dell HIP Program Diagnostics MessagesScsi Hard-Disk Drive Indicator Codes Scsi Hard-Disk Drive Indicator PatternsPage Error Messages Finding Software SolutionsInstalling and Configuring Software Using SoftwareAvoiding Interrupt Assignment Conflicts Input ErrorsDefault IRQ Line Assignments Program ConflictsRunning the System Diagnostics Features of the System DiagnosticsWhen to Use the System Diagnostics Sample Diagnostics Menu Starting the System DiagnosticsSample System Diagnostics Main Screen How to Use the System DiagnosticsSelect How to Use the MenuMain Menu Categories RunRun Under Subtest SubtestOption Parameters OptionsTest Limits AboutKey-Help Tests in the System Diagnostics System Diagnostics TestsQuit System Diagnostics Tests System Set Test Group Error MessagesWhy Run a RAM Test? RAM Test GroupWhy Run a System Set Test? Video Test Group Why Run a Video Test?Why Run a Keyboard Test? Keyboard Test GroupMouse Test Serial/Infrared Ports Test Group Why Run the Mouse Test?Why Run a Diskette Drives Test? Diskette Drives Test GroupParallel Ports Test Group Why Run a Serial/Infrared Ports Test?Scsi Devices Test Group Why Run a Parallel Ports Test?Why Run a Scsi Devices Test? Page Troubleshooting the Monitor Run the system diagnostics softwareChecking the Equipment Troubleshooting I/O Ports Troubleshooting the KeyboardTroubleshooting the Basic I/O Functions Check the contents of the start-up filesChange the necessary statements in the start-up files Attempt another print operation on the parallel printer Troubleshooting a Parallel PrinterTroubleshooting a Serial I/O Device Run the parallel printer’s self-testChecking Inside the Computer Safety First- For You and the ComputerRemoving the Computer Covers Removing and Replacing the Computer CoversRemoving the Computer Covers Replacing the Computer CoversRemoving the Front Bezel Inside the ChassisRemove the computer covers Inside the Chassis-Front/Left Side View Responding to a Dell HIP Alert Message Troubleshooting a Wet ComputerVerify all internal cable and component connections Troubleshooting a Damaged ComputerLet the computer dry for at least 24 hours Check all the board and card connections in the computerTroubleshooting the RTC Chip Replacing a Power Supply Troubleshooting Power Supply ProblemsCheck the cable connections listed in Table Troubleshooting a Cooling FanTroubleshooting Power Cable Connections Power Cable Connectors on Power-Supply Paralleling BoardReinstall the fan carrier in the computer Replacing a Cooling FanReplace the left computer cover Reseat the expansion cards in their connectors Troubleshooting Expansion CardsTurn on the system, including any attached peripherals Troubleshooting System MemoryCorrect the system board’s configuration jumper settings Run the RAM Test Group in the system diagnosticsTroubleshooting the Video Subsystem Troubleshooting the System Board Determine whether a video expansion card is installedRemove the video expansion card, and repeat step Disconnect the keyboard and reboot the system Troubleshooting the Diskette Drive SubsystemRepeat steps 1 and 2, and remove all expansion cards Troubleshooting the Diskette Drive Sub- systemChecking the Diskette Drive Subsystem Check the diskette drive cablingTroubleshooting a Scsi Tape Drive Drive Indicator Error Codes Troubleshooting Scsi Hard-Disk DrivesRemove the drive carrier and install it in another drive bay Troubleshooting the Scsi Hard-Disk DriveChecking Inside the Computer Page Installing System Board Options Installing System Board OptionsExpansion Cards System Board FeaturesExpansion Cards Installing an Expansion CardConnect any cables that should be attached to the card Relocating or Removing an Expansion CardMemory Upgrade Kits Simm Installation GuidelinesAdding Memory Sample Simm Configurations Shows the location of the Simm sockets on the memory module Performing a Memory UpgradeInstalling SIMMs Removing SIMMs Valid Microprocessor Configurations Remove the left computer cover Remove the appropriate modules Remove the heat sinkRemove the microprocessor from the socket Unpack the new microprocessor Install the microprocessor in the socket see Fig- ureReplace the microprocessor securing clip Replacing the RTC Chip13. RTC Chip Install the new RTC chipPage Installing Drives in the External Bays Installing Drives in the External BaysExternal Drive Bay Hardware Before You BeginRemoving and Replacing Front-Panel Inserts Connecting the DriveInstalling Scsi Devices in the External Bays DC Power CablesScsi Configuration Information Installing a Scsi Device Prepare the drive for installationRemove the computer covers and front bezel Page Configure the controller card if necessary Remove both computer covers and the front bezel Prepare the tape drive and controller card for installationInstalling Drives in the Internal Bays 10-1 Installing Drives in the Internal BaysInternal Drive Hardware Scsi Hard-Disk Drive ConfigurationInstall any required Scsi device drivers Removing and Installing a Scsi Hard-Disk DriveRemove the hard-disk drive Scsi Hard-Disk Drive Indicator PatternsInstalling Drives in the Internal Bays 10-5 Partitioning and Formatting Scsi Hard-Disk Drives Configuring the Boot DeviceHelp Tools Run the diagnostics for your Dell systemGetting Help Technical AssistanceSystem Documentation World Wide Web on the InternetHelp Tools TechFax Service Commercial Online ServicesDell Diagnostics Program AutoTech ServiceTechConnect BBS Problems With Your OrderTechnical Support Service Product InformationReturning Items for Warranty Repair or Credit Before You CallDell Contact Numbers International Dialing Codes 1344Getting Help 11-7 Belgium Dell Contact NumbersAustralia AustriaCanada ChinaCzech Republic Germany DenmarkFinland FranceKorea IrelandItaly JapanMexico LuxembourgMacau MalaysiaSingapore New ZealandNorway PolandSweden SwitzerlandTaiwan Austin, Texas AutoTech Automated technical support Page Diagnostics Checklist Diagnostics Checklist Video Hardware Test Diagnostic Video TestsText Mode Character Test Video Memory TestCharacter Set Subtest 40 x Character Attributes Subtest 80 xCharacter Set Subtest 80 x Character Attributes Subtest 40 xText Mode Color Test Color Attributes Subtest 80 xTable B-1. Color Attributes Graphics Mode Test Text Mode Pages Test640 x 480 2-Color Graphics Mode Screen 320 x 200 16-Color Graphics Mode Screen640 x 200 16-Color Graphics Mode Screen 640 x 350 16-Color Graphics Mode ScreenColor Palettes Test Solid Colors Test Page Jumpers Jumpers, Switches, and ConnectorsJumpers and Switches General Explanation SwitchesSystem Board Figure C-1. System Board Jumpers and SwitchesClear Cmos Clear Password Reserved Bios Recovery Table C-1. System-Board Jumper and Switch SettingsVideo Sleep System Board Labels Table C-2. System Board Connectors and SocketsFigure C-2. Microprocessor Module Jumpers Microprocessor ModuleTable C-3. Microprocessor Module Jumper Settings Scsi Backplane Board Table C-4. Scsi Backplane Board ConnectorsFigure C-4. Power-Supply Paralleling Board Power-Supply Paralleling BoardTable C-5. Power-Supply Paralleling Board Connectors Disabling a Forgotten PasswordDer Telekommunikation Abbreviations and AcronymsDram LIF Verband Deutscher Elektro Index Page Index Page Index Page Switches settings table, C-3 Page Index
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