Dell 3000 manual Troubleshooting Procedures, Troubleshooting a Wet Computer

Page 53

Table 3-4. IRQ Line Assignments (continued)

IRQ Line

Used/Available

 

 

IRQ12

Generated by the keyboard controller to

 

indicate that the output buffer of the inte-

 

grated touch pad or external PS/2 mouse

 

is full

IRQ13

Used by the math coprocessor on the

 

microprocessor

IRQ14

Generated by the hard-disk drive to indi-

 

cate that the drive requires the attention of

 

the microprocessor

IRQ15

Reserved

NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide.

Troubleshooting Procedures

This section provides troubleshooting procedures for built-in components (such as the display) and for external devices that connect to the computer (such as an external monitor). Before performing any of the procedures in this section, see “Basic Checks” found earlier in this chapter and read the safety instructions at the front of this guide. Then perform the appropriate troubleshooting procedure for the component or equipment that is malfunctioning.

NOTES: When you see the question “Is the problem resolved?” in a troubleshooting procedure, perform the operation that caused the problem to see if the problem still occurs.

Before you begin any of the troubleshooting procedures, make sure the Quiet Boot option is set to Disabled in the Main menu of the Setup program. See Chapter 2, “Cus- tomizing System Features,” for information on using the Setup program.

Troubleshooting a Wet Computer

Liquids, spills and splashes, rain, and excessive humidity can cause moisture damage to the computer. If the com- puter gets wet or if condensation forms on the computer because of humid conditions, use the following procedure.

WARNING: Perform step 1 of the following proce- dure only after you are certain that it is safe to do so. If the computer is connected to an alternating current (AC) power source, Dell recommends turn- ing off AC power at the circuit breaker before attempting to remove the power cables from AC power. Use the utmost caution when removing wet cables from live power.

1.Turn off the computer, and disconnect it from the AC adapter. Then disconnect the AC adapter from AC power. Turn off any attached periph- erals, and disconnect them from their power sources and then from the computer.

2.Remove any installed batteries.

Wipe off each battery, and store it in a safe place to dry.

3.If the options bay slot is wet, remove the device from the bay. If the PC Card slot is wet, remove any PC Cards. Put the device and cards in a safe place to dry.

4.Ground yourself by touching one of the metal connectors on the back of the computer.

5.Turn the computer over, and remove the two screws securing the hard-disk drive.

6.Pull the hard-disk drive straight out of the com- puter. The memory module cover will now lift off.

7.Remove any installed memory modules from their sockets on the system board.

Carefully spread apart the inner metal tabs of the memory module socket just far enough for the mem- ory module to disengage from the socket (the module should pop up slightly). Then lift the mem- ory module away from the socket.

Troubleshooting Your Computer

3-11

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Contents 551&$1 7528%/6+227,1 Page When Using Your Computer Safety InstructionsErgonomic Computing Habits When Removing or Installing Memory ModulesProtecting Against Electrostatic Discharge Viii About This Guide Warranty and Return Policy InformationPreface Typographical Conventions Other Documents You May NeedNotational Conventions Examples autoexec.bat and c\windows Xii Contents Chapter Troubleshooting Your Computer Chapter Running the Dell Diagnostics Xvi Chapter Getting Help Xviii Appendix C Regulatory Notices Figures Dell Confidential Preliminary 2/4/98 Xxiv Xxv Xxvi Front View of the Portable Computer IntroductionBack View of the Portable Computer Hardware FeaturesIntroduction Using the Power Button Software FeaturesAccessing Online Documentation Available OptionsGetting Help Dell Inspiron 3000 Reference and Troubleshooting Guide System Utilities Customizing System FeaturesMain Menu Options Setup ProgramAccessing the Setup Program System Time Quiet BootSystem Date Floppy DriveSystem Devices Menu Options System MemoryExtended Memory IDE Controller PS/2 MouseFDD Controller CD-ROM Drive SpeedSecurity Menu Options AudioSet System Password System PasswordPassword on Boot Power Menu OptionsSmart CPU Mode Power Management ModeStandby Time-Out Suspend Time-OutBoot Menu Options Suspend ModeResume on Modem Ring Resume on Time of DayExit Menu Options Boot Menu of Setup ProgramReinstalling Utilities and Drivers Click the Settings tab Click the Advanced Properties button Reinstalling Video DriversDouble-click the Display icon Adapter Type box, click the Change ButtonReinstalling Audio Drivers Reinstalling Touch Pad DriversReinstalling the Soft Wavetable Reinstalling Infrared DriversClick the Service and Support icon Reinstalling the System User’s GuideWhen prompted, save the file to your hard-disk drive Click Technical Information, and then click DocumentationBacking Up Your Files Troubleshooting Your ComputerBasic Checks Is your computer wet or damaged?Did you receive a system message or beep code? Checking ConnectionsChecking an Optional Device Look and ListenBoot Routine Indications Setup OptionsMessages and Codes System Error MessagesFaulty Ter 5, Getting Help Cmos System Beep CodesBeep Codes Installing and Configuring Software Finding Software SolutionsUsing Software Error MessagesMemory-Resident Programs Input ErrorsProgram Conflicts Avoiding Interrupt Assignment ConflictsTroubleshooting a Wet Computer Troubleshooting ProceduresTroubleshooting a Damaged Computer Total Power Failure When Using the AC Adapter Troubleshooting a Power FailureIs the battery status indicator blinking? Yes. Go to step Total Power Failure When Using a BatteryUse the AC adapter to fully charge the battery Call Dell for technical assistanceTroubleshooting the Diskette Drive No Power to a Part of the ComputerTroubleshooting the CD-ROM Drive Does the computer display a drive error message?Troubleshooting the Hard-Disk Drive Does the computer recognize the external keyboard? Troubleshooting an External KeyboardTroubleshooting the Built-In Display Troubleshooting MemoryIs an external monitor connected to the computer? Troubleshooting an External MonitorTroubleshooting the Basic I/O Functions Troubleshooting the Serial and Parallel PortsTroubleshooting a Serial I/O Device Troubleshooting a Parallel PrinterChange the necessary statements in the start-up files Attempt another print operation on the parallel printerTroubleshooting the Touch Pad Troubleshooting the Infrared PortTroubleshooting Audio Functions Dell Inspiron 3000 Reference and Troubleshooting Guide When to Use the Dell Diagnostics Running the Dell DiagnosticsFeatures of the Dell Diagnostics Install a CD-ROM drive in the options bay Before You Start TestingStarting the Dell Diagnostics How to Use the Dell Diagnostics Completing the Dell DiagnosticsConfirming the System Configuration Information Main Menu Options How to Use the MenuRun SelectOptions Number of Times to Repeat Tests Maximum Errors AllowedPause for User Response Option ParametersTest Limits Output Device for Error MessagesOutput Device for Status Messages About Tests in the Dell DiagnosticsKey-Help QuitRAM Dell Diagnostics TestsDell Diagnostics Tests System Set Test Group Error MessagesRAM Test Group Video Test Group Keyboard Test Group Why Run a Video Test?Why Run a Keyboard Test? Diskette Drives Test Group Why Run the Mouse Test?Mouse Test Hard-Disk Drives Non-SCSI Test Group Why Run a Diskette Drives Test?Why Run a Hard-Disk Drives Test? IDE CD ROM Drives Test Group Why Run an IDE CD ROM Drives Test?Why Run a Parallel Ports Test? Why Run a Serial/Infrared Ports Test?Serial/Infrared Ports Test Group Parallel Ports Test GroupAudio Test Group Why Run an Audio Test?Dell Inspiron 3000 Reference and Troubleshooting Guide Getting Help Run the diagnostics for your Dell computerTechnical Assistance Review the Dell Q&AHelp Tools Help ToolsCommercial Online Service Reference and Troubleshooting GuideDell Diagnostics Program AutoTech ServiceTechnical Support Service TechFax ServiceTechConnect BBS Automated Order-Status SystemReturning Items for Warranty Repair or Credit Problems With Your OrderProduct Information Before You CallDiagnostics Checklist Diagnostics Checklist1344 Dell Contact NumbersInternational Dialing Codes Australia Dell Contact NumbersAustria BelgiumCanada BruneiChile ChinaFinland DenmarkFrance GermanyItaly IrelandJapan KoreaLuxembourg Latin AmericaMacau MalaysiaNetherlands MexicoNew Zealand NorwaySouth Africa SingaporeSoutheast Asian Pacific CountriesThailand SwitzerlandTaiwan Table A-1. Technical Specifications Technical SpecificationsSdram Audio Display XGA Touch Pad Table A-1. Technical Specifications AC Adapter Environmental Computer Text Mode Character Test Diagnostic Video TestsVideo Memory Test Video Hardware TestCharacter Set Subtest 80 x Character Attributes Subtest 80 xCharacter Attributes Subtest 40 x Character Set Subtest 40 xTable B-1. Color Attributes Text Mode Color TestColor Attributes Subtest 80 x Graphics Mode Test Text Mode Pages TestColor Palettes Test Solid Colors Test FCC Class B Notice U.S. Only Regulatory NoticesIC Notice Canada Only Modem RequirementsCanadian Modem Requirements EN 55022 Compliance Czech Republic OnlyCE Notice Korean Regulatory Notice Vcci Notices Japan Only8ZNBHBOJB 1PMTLJFHP$FOUSVN Polish Center for Testing and Certification NoticeNOM 024 Information Mexico Only Warranties and Return Policy Limited One-Year Warranty U.S. and Canada OnlyCoverage During Year One Limited Three-Year Warranty U.S. and Canada OnlyGeneral Coverage During Years Two and ThreeTotal Satisfaction Return Policy U.S. and Canada Only Index Dell Inspiron 3000 Reference and Troubleshooting Guide Help tools TechFax service, 5-4 user’s documentation Dell Inspiron 3000 Reference and Troubleshooting Guide Post Dell Inspiron 3000 Reference and Troubleshooting Guide Index XGA display Dell Information Development File Names &
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