HP 1277, 1278 manual Preliminary Steps, Run Computer Checkup

Page 15

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

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

Before running POST, complete the following preliminary steps:

1.If a power-on password has been established, type the password and press the Enter key. If the password is not known, clear the password .

2.Run Computer Checkup.

3.Turn off the computer and its external devices.

4.Disconnect any external devices that you do not want to test. Do not disconnect the printer if you want to test it or use it to log error messages.

IMPORTANT:

IMPORTANT: If the problem only occurs when an external device is connected to the computer, the problem may be related to the external device or its cable. Verify this by running POST with and without the external device connected.

5.Install loopback plugs in the serial and parallel connectors if you would like to test these ports.

6.Ensure the hard drive is installed in the computer.

7.Ensure that the battery pack is inserted in the computer and the computer is connected to an external AC power source.

When the preliminary steps are completed, you are ready to run POST.

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Contents Page Compaq Computer Corporation Technician Notes PrefaceCompaq Presario Series Portable Computer is Product DescriptionMAH NiMH Models and FeaturesControls and Lights Front Bezel Lights Front Bezel Buttons Left Side Components Product DescriptionRight Side Components Bottom of Unit Rear Connectors Pow Power Management for WindowsFollow the Preliminary Steps Run the Power-OnSelf-Test Post TroubleshootingRun Computer Checkup Preliminary StepsCover with Touch Pad Clearing the Power-on PasswordRunning Post Power-On Self Test PostComputer Checkup Test Compaq DiagnosticsShipping Preparation Contacting Compaq SupportProcessor Test Error Codes Diagnostic Error CodesBefore Replacing Parts Troubleshooting Without DiagnosticsSolving Minor Problems Maintenance & Service GuideSolving Power Problems Illustrated Parts Catalog System Unit Mass Storage DevicesDescription Spare Part Number BoardsDisplay Assembly Mass Storage Devices Miscellaneous Cable Kit Spare Part Number Miscellaneous Cables KitMiscellaneous Hardware Kit Miscellaneous Hardware Kit Spare Part Number 346853-001Miscellaneous Plastics Kit Miscellaneous Parts Documentation and Software Feature GuideSerial Number Location Removal and Replacement ProceduresElectrostatic Discharge Removal and Replacement ProceduresService Considerations Removal and Replacement ProceduresCables Cables and ConnectorsCAU 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 Removal Sequence Removing the Battery PackRemoving the Battery Pack Removing the Palmrest Cover with Touch Pad Removing the Palmrest Cover with Touch Pad Removing the Keyboard Computer Removing the ProcessorTo replace the processor, complete the following steps Removing the ProcessorRemoving 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 Removing Display Panel Assembly 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 Memory Module Removing the Speaker AssemblyUpper CPU cover Removing Diskette DriveRemoving Fan Assembly Important the arrow located on Removing the Fan AssemblyElectrostatic 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 Physical and Environmental SpecificationsPin Signal Connector Pin AssignmentsIncreasing Battery Pack Operating Time Battery Pack Operations
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1278, 1277 specifications

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