Compaq 1800T, 1825 specifications Preface, Symbols

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Maintenance & Service Guide

Presario 1800 Series

Models: 1825 and 1800T

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

Preface

This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the Compaq Presario 1800 Series Portable Computers.

Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 1800 Series Portable Computers without notice.

Symbols

The following words and symbols mark special messages throughout this guide.

WARNING: Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of data.

IMPORTANT: Text set off in this manner presents clarifying information or specific instructions.

NOTE: Text set off in this manner presents commentary, sidelights, or interesting points of information.

Technician Notes

WARNING: Only authorized technicians trained by Compaq should repair this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the complexity of the individual boards and subassemblies, the user should not attempt to make repairs at the component level or to make modifications to any printed circuit board. Improper repairs can create a safety hazard. Any indications of component replacement or printed circuit board modifications may void any warranty

Serial Number

When requesting information or ordering spare parts, the computer serial number should be provided to Compaq. The serial number is located on the bottom of the computer.

Locating Additional Information

The following documentation is available to support this product:

Compaq Presario 1800 Series Portable Computer documentation set

Introducing Windows 98 Guide

Service Training Guides

Compaq Service Advisories and Bulletins

Compaq QuickFind

Compaq Service Quick Reference Guide

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Contents Page Page Preface SymbolsProduct Description Follow the Preliminary Steps TroubleshootingIllustrated Parts Catalog Removal and Replacement Procedures Serial Number LocationRemoval Sequence Specifications Connector Pin Assignments Disposing of a Used Battery Pack Battery Pack OperationsIncreasing Battery Pack Operating Time Conditioning a Battery PackModem Kbps Data/Fax with PCI Networking Models and FeaturesModels and Features Hard Drive CD or DVD DriveControls and Lights Controls LightsIntegrated Speakers Internet Zone Buttons Lights Internet Zone Buttons LightsFront Bezel Components Front Bezel ComponentsLeft Side Components Left Side Components with Diskette DriveLeft Side Components with LS120 Drive Right Side Components Right Side ComponentsBottom Unit Bottom of UnitBack Connectors Back ConnectorsPort Replicator Components Port Replicator ComponentsPort Replicator Connectors Port Replicator Back ConnectorsPower Management for Windows Run Computer Checkup Preliminary StepsClearing the Power-on Password Running Post Power-On Self Test PostComputer Checkup Test Compaq DiagnosticsShipping Preparation Contacting Compaq SupportDiagnostic Error Codes Before Replacing Parts Troubleshooting Without DiagnosticsSolving Minor Problems Solving TouchPad/Pointing Device Problems Solving PC Card ProblemsSolving Power Problems Solving Printer ProblemsSystem Unit System UnitBoards BoardsDescription Part Number Boards Display Assembly Display AssemblyMass Storage Devices Mass Storage DevicesDescription Spare Part Number Miscellaneous Cables Kit Miscellaneous Cables KitDescription Quantity Miscellaneous Hardware Kit Miscellaneous Hardware KitMiscellaneous Plastics Kit Miscellaneous Plastics KitMiscellaneous Parts Miscellaneous PartsDocumentation and Software Documentation and SoftwareGenerating Static Electrostatic DischargeReturn to Removal & Replacement Procedures Service ConsiderationsPlastic Parts Cables and ConnectorsCables Select the desired illustrationBack to Cables and Connectors Ribbon cable position for the hard drive Ribbon cable position for the DVD or CD drive Ribbon cable position for the diskette drive Ribbon cable position for the LS120 drive Back to Cables and Connectors Cable position for the modem Cable position for the Network Interface Card Ribbon cable position for the keyboard Preparing the Computer for Disassembly Removing the Battery Pack Removal & Replacement ProceduresPalmrest Cover with TouchPad Removing the Palmrest Cover with TouchPadRemoving Palmrest Cover with TouchPad Removal & Replacement Procedures Keyboard Removing the KeyboardStatus Panel Removing Status Panel AssemblyRemoving the Status Panel Assembly Removal & Replacement Procedures Return to Removal Replacement Procedures Removing Internet Button Board Removal & Replacement Procedures Removing the Heatspreader Removing the Network Interface Card Removing the Modem Removing Hard Drive Removing the Hard Drive Mounting Brackets DisqPlay Module Removing the DisqPlay ModuleRemoving the Processor Replacing the Processor DVD or CD Drive Removing the DVD or CD DriveRemoval & Replacement Procedures Return to Removal Replacement Procedures Remove the status panel assembly Removing Display Panel AssemblyRemoving the Display Panel Assembly Return to Removal & Replacement Procedures Upper CPU Cover Removing Upper CPU CoverFan Assembly Removing Fan AssemblyRemoving the Fan Assembly Removing the Diskette or LS120 Drive Return to Removal & Replacement Procedures Removing Battery Charger Board Remove the Upper CPU cover Removing the Speaker AssemblyRemoval Removing the System BoardRemove ten standoffs from the system board Removal & Replacement Procedures Remove four screws from the system board Before replacing Removing Memory Module Memory ModuleRemoving the Memory Module
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