Compaq 1650, Presario 1600 Series Troubleshooting Without Diagnostics, Before Replacing Parts

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United States January 2, 2003

Maintenance & Service Guide

Presario 1600 Series

Models: 1650 and 1655

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 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 Symbols PrefaceProduct Description Port ReplicatorTroubleshooting Follow the Preliminary Steps Run the Power-OnSelf-Test PostIllustrated Parts Catalog Removal and Replacement Procedures Serial Number LocationSpecifications Connector Pin Assignments Battery Pack Operating Time Models and Features ProcessorHard Drive CD Drive ModemControls and Lights Front of UnitLeft Side Components Right Side Components Bottom of Unit Rear Connectors Port Replicator Pin Port Replicator Connector Port Replicator Rear Connectors Port Replicator Rear ConnectorsPower Management for Windows Removing the Battery Pack Preliminary Steps Run Computer CheckupPower-On Self Test Post Running Post Clearing the Power-on Password Computer Checkup Test Compaq DiagnosticsView System Information Inspect Contacting Compaq Support Shipping PreparationDiagnostic Error Codes ProceduresTroubleshooting Without Diagnostics Before Replacing PartsSolving Minor Problems Solving PC Card Problems Solving Power ProblemsSolving Printer Problems Solving Touch Pad/Pointing Device ProblemsSystem Unit Description Spare Part NumberBoards Description Spare Part NumberMiscellaneous Parts Documentation Software Mass Storage Devices Miscellaneous Cables Kit Miscellaneous Cables Kit Spare Part NumberDescription Modem Cables Spare Part NumberMiscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Kit Spare Part NumberMiscellaneous Parts Description Spare Part Number Quick Restore CD Documentation and SoftwareQuick Reference Guide QuickFind Part Number Suffix MonthElectrostatic Discharge Generating StaticService Considerations Cables and Connectors CablesSelect the desired illustration Plastic PartsZIF Connectors Ribbon cable position for the 5.0-GB or 4.0-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 Prepare the computer for disassembly Removing the Palmrest Cover with Touch PadReturn to Removal & Replacement Procedures Removing the Keyboard Return to Removal Replacement Procedures Removing the Heatspreader Removing the Modem To replace the modem, reverse the previous procedures Removing the Processor Replace the processor bracket Removing the Status Panel Maintenance & Service Guide Removing the Interface Board with Header Audio BoardNext Step When replacing interface board, ensure both Interface Board Components Removing the 5.0-GB or 4.0-GB Hard Drives Maintenance & Service Guide Bracket, reverse the previous procedures Removing the Battery Charger Board Removing the CD Drive Disconnect the CD drive cable from the system board Removing the Display Panel Assembly Maintenance & Service Guide Important before 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