HP 1278, 1277 manual Troubleshooting, Follow the Preliminary Steps Run the Power-OnSelf-Test Post

Page 14

Maintenance & Service Guide

Presario Series

Models: 1246, 1247, 1277, 1278, and 1279

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-On Self 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 Series Portable Computers. The basic steps in troubleshooting include:

1.Follow the Preliminary Steps.

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

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

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.

NOTE: If the problem is intermittent, check the computer several times to verify that the problem is solved.

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Contents Page Compaq Computer Corporation Preface Technician NotesProduct Description Compaq Presario Series Portable Computer isModels and Features MAH NiMHControls and Lights Front Bezel Lights Front Bezel Buttons Product Description Left Side ComponentsRight Side Components Bottom of Unit Rear Connectors Power Management for Windows PowTroubleshooting Follow the Preliminary Steps Run the Power-OnSelf-Test PostPreliminary Steps Run Computer CheckupClearing the Power-on Password Cover with Touch PadPower-On Self Test Post Running PostCompaq Diagnostics Computer Checkup TestContacting Compaq Support Shipping PreparationDiagnostic Error Codes Processor Test Error CodesTroubleshooting Without Diagnostics Before Replacing PartsMaintenance & Service Guide Solving Minor ProblemsSolving Power Problems Illustrated Parts Catalog Mass Storage Devices System UnitBoards Description Spare Part NumberDisplay Assembly Mass Storage Devices Miscellaneous Cables Kit Miscellaneous Cable Kit Spare Part NumberMiscellaneous Hardware Kit Spare Part Number 346853-001 Miscellaneous Hardware KitMiscellaneous Plastics Kit Miscellaneous Parts Feature Guide Documentation and SoftwareRemoval and Replacement Procedures Serial Number LocationRemoval and Replacement Procedures Electrostatic DischargeRemoval and Replacement Procedures Service ConsiderationsCables and Connectors CablesCAU Back to Cables and Connectors Ribbon cable position for the CD drive Ribbon cable position for the diskette drive Cable position for the speaker assembly Preparing the Computer for Disassembly Removing the Battery Pack Removal SequenceRemoving the Battery Pack Removing the Palmrest Cover with Touch Pad Removing the Palmrest Cover with Touch Pad Removing the Keyboard Removing the Processor ComputerRemoving the Processor To replace the processor, complete the following stepsRemoving the Heatspreader Removing the 4.3-GB or 4.8- GB Hard Drive Removing the 4.3-GB or 4.8-GB Hard Drive Removing the 4.3-GB or 4.8-GB Hard Drive Removing the CD Drive Removal and Replacement Procedures Return to Removal Replacement Procedures Removing Battery Charger Board Removing the Modem Removing the Modem Display Panel Assembly Removing Display Panel AssemblyRemoving the Display Panel Assembly Close the display panel assembly and push back on Removal and Replacement Procedures Lvds Removing the Upper CPU Cover Removal and Replacement Procedures Removing the Speaker Assembly Memory ModuleRemoving Diskette Drive Upper CPU coverRemoving Fan Assembly Removing the Fan Assembly Important the arrow located onElectrostatic Removing the System Board Removal and Replacement Procedures Remove two screws from the system board Removal and Replacement Procedures Return to Removal & Replacement Procedures Removing the Memory Module Removing the Memory Module Specifications Physical and EnvironmentalConnector Pin Assignments Pin SignalBattery Pack Operations Increasing Battery Pack Operating Time
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1278, 1277 specifications

The HP 1278 and 1277 are modern printers designed to meet the evolving needs of both home and office environments. These models feature advanced printing technologies that enhance efficiency while delivering high-quality prints.

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