Compaq 1245 specifications Troubleshooting, Follow the Preliminary Steps

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Maintenance & Service Guide

Presario 1200 Series

Model: 1245

Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations

Troubleshooting

Preliminary Steps

Clearing the Power-On Password

Power-OnSelf Test (POST)

Compaq Diagnostics Diagnostic Error Codes

Troubleshooting Without Diagnostics

Solving Minor

Problems

Contacting Compaq Support

This section covers troubleshooting information for the Compaq Presario Model 1245 Portable Computer. The basic steps in troubleshooting include:

1.Follow the Preliminary Steps.

2.Run the Power-OnSelf-Test (POST).

3.If you are unable to run POST or if POST displays an error message, follow the recommended actions described in the diagnostic tables.

When following the recommended actions in the Sections on POST and Diagnostic Error Codes,

perform them in the order listed. Rerun POST after each recommended action until the problem is solved and no error message occurs. Once the problem is solved, do not complete the remaining recommended actions.

If the problem is intermittent, check the

NOTE: computer several times to verify that the problem is solved.

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Contents Maintenance & Service Guide Maintenance & Service Guide Symbols PrefaceCompaq Product DescriptionDisplay 12 HPA Processor Models & FeaturesBattery ES NiMH System Memory 32 MB Hard Drive CD Drive 24× MAX ModemFront Panel Components Controls and LightsLeft Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows Display Properties Power Management SettingsPower Management Properties Sleep Hibernation Mode Mode To Initiate To End IndicatorsRebooting After a Lockup Servicing Your Computer Full Off Mode Illustrated Parts Catalog Place cursor over each device to obtain its part number System UnitBoards Place cursor over each device to obtain its part numberDisplay Assembly Mass Storage Devices Place cursor over each device to obtain its part numberMiscellaneous Cables Kit Power Cord CablesMiscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics KitMiscellaneous Parts Spare Part Number Documentation and SoftwareDescription Removal and Replacement Procedures Serial Number LocationElectrostatic Discharge Generating StaticService Considerations Plastic Parts Cables and ConnectorsSelect the desired illustration ZIF Connectors Ribbon cable position for the 3.2-GB hard drive Ribbon cable position for the CD drive Ribbon cable position for the diskette drive Back to Cables and Connectors Preparing the Computer for Disassembly Removing the Battery Pack To remove the battery pack, complete the following stepsReplacement Procedures Prepare the computer for disassembly Removing the Palmrest Cover with Touch PadWhen replacing the palmrest cover, ensure Return to Removal Removing the Heatspreader Removing the Keyboard Removing the Processor To replace the processor complete the following steps Maintenance & Service Guide Removing the Hard Drive Presario 1200 Series Models Replacement Procedures Removing the CD Drive Maintenance & Service Guide To replace the CD drive, reverse the previous procedures Removing the Battery Charger Board Removing the Modem To replace the modem, reverse the previous procedures Removing the Display Panel Assembly Maintenance & Service Guide Maintenance & Service Guide Maintenance & Service Guide When removing the display panel assembly Return to Removal Removing the Upper CPU Cover Removing the Speaker Assembly Fan Assembly System Board Dip Switch Settings Memory Module Removing the Diskette DriveReplacement Procedures Removing the Fan Assembly System Board Dip Switch Settings Memory ModuleTo replace the fan assembly, reverse the previous procedure Removing the System Board Remove three standoffs from the system board Maintenance & Service Guide Remove three screws from the system board To replace the system board, reverse the previous procedures Removing the Memory Module Memory ModuleReplacement Procedures Specifications Physical and EnvironmentalHardware System Function System InterruptsSystem Interrupts Hardware DMA System Function System DMASystem DMA System I/O Address Address Hex System Function Shipping ConfigurationSystem I/O Address System Memory Catalog System Memory CatalogDisplay Memory Expansion Environmental Requirements Battery PackEnergy Diskette Drive Hard Drives Capacity Per Drive Formatted Logical ConfigurationHard Drives Seek TimesRotational Speed 24× CD Drive DimensionsCD Drive Typical Transfer RateConnector Pin Assignments Conditioning a Battery Pack Battery Pack Operating TimeIncreasing Battery Pack Operating Time Disposing of a Used Battery PackTroubleshooting Follow the Preliminary StepsPreliminary Steps Run Computer CheckupProbable Cause Power-On Self Test PostRunning Post Recommended ActionView System Information Inspect Compaq DiagnosticsPerform Computer Checkup Test Contacting Compaq Support Shipping PreparationClearing the Power-on Password Remove the Palmrest Cover with Touch PadDiagnostic Error Codes Select error codes by number or typeTroubleshooting Without Diagnostics Before Replacing PartsSolving Minor Problems Solving PC Card Problems Solving Power Problems