HP 1805 manual Troubleshooting Without Diagnostics, Before Replacing Parts

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Maintenance & Service Guide

Presario 1800 Series

Models: 1805 and 1810

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

Troubleshooting Without Diagnostics

This section provides information about how to identify and correct some common hardware, memory, and software problems. It also explains several types of common messages that may be displayed on the screen. The following pages contain troubleshooting information on:

Audio

Memory

Battery/Battery gauge

PC Card

CD/DVD drive

Power

Diskette/Diskette drive

Printer

Display

Touch Pad

Hard drive

Keyboard/Numeric keypad

Hardware Installation

 

Since symptoms can appear to be similar, carefully match the symptoms of the computer malfunction against the problem description in the Troubleshooting tables to avoid a misdiagnosis.

WARNING: To avoid a potential shock hazard during troubleshooting procedures, disconnect all power sources before removing the keyboard cover or the display bezel.

Before Replacing Parts

Verify that cables are connected properly to the suspected defective parts.

Run Computer Setup after connecting external devices.

Verify that all required device drivers are installed.

Verify that all required changes have been made to the CONFIG.SYS file.

Verify that all required changes have been made to the AUTOEXEC.BAT file.

Verify that all printer drivers have been installed for each application.

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Contents Maintenance & Service Guide Maintenance & Service Guide Preface SymbolsPort Replicator Product DescriptionFollow the Preliminary Steps Run the Power-OnSelf-Test Post TroubleshootingIllustrated Parts Catalog Serial Number Location Removal and Replacement ProceduresSpecifications Connector Pin Assignments Battery Pack Operating Time Compaq Presario 1800 Series Portable Computer Models Models and FeaturesModel Front of Unit Controls and LightsPort Replicator Left Side ComponentsRight Side Components Bottom of Unit Rear Connectors Port Replicator Power Management for Windows Run Computer Checkup Preliminary StepsRunning Post Power-On Self Test PostClearing the Power-on Password Computer Checkup Test Compaq DiagnosticsView System Information Inspect Shipping Preparation Contacting Compaq SupportProcedures Diagnostic Error CodesBefore Replacing Parts Troubleshooting Without DiagnosticsSolving Minor Problems Solving Power Problems Solving PC Card ProblemsSolving Printer Problems Solving Touch Pad/Pointing Device ProblemsUnited States 330981-001 System UnitModem, 56.0 Kbps Data/Fax w/o BoardsDescription Mass Storage Devices Miscellaneous Cables Kit Spare Part Number Miscellaneous Cables KitModem Cables Spare Part Number DescriptionMiscellaneous Hardware and Plastics Kit Spare Part Number Miscellaneous Hardware and Plastics KitMiscellaneous Parts Documentation and Software Description Spare Part Number Quick Restore CDQuick Reference Guide QuickFind Part Number Suffix MonthGenerating Static Electrostatic DischargeService Considerations Cables Cables and ConnectorsSelect the desired illustration Plastic PartsZIF Connectors Maintenance & Service Guide Ribbon cable position for the CD drive Ribbon cable position for the diskette drive Back to Cables and Connectors Preparing the Computer for Disassembly Preparing the Computer for DisassemblyRemoving the Keyboard Prepare the computer for disassemblyRemoving the Heatspreader Removing the Modem Return to Removal Replacement Procedures Removing the Processor Replace the processor bracket Removing the Status Panel Audio Board Removing the Interface Board with HeaderNext Step When replacing interface board, ensure both Interface Board Components Removing the 3.2-GB, 4.0-GB, or 6.4-GB Hard Drive Maintenance & Service Guide Bracket, reverse the previous procedures Removing the Battery Charger Board Removing the CD or DVD Drive Disconnect the CD or DVD drive cable from the system board Removing the Display Panel Assembly Removing the Upper CPU Cover Removing the Speaker Assembly Removing the Diskette Drive Maintenance & Service Guide Return to Removal Replacement Procedures Removing the Fan Assembly Removing the Audio Board To replace the audio board, reverse the previous procedures Removing the System Board Remove five standoffs from the system board Remove three screws from the system board Return to Removal & Replacement Procedures Removing the Memory Module Return to Removal Replacement Procedures
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