Compaq 305 specifications Preface, Symbols

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Presario 305 Model

Before You Begin

 

Specifications

 

Parts Catalog

 

 

 

 

 

 

 

 

 

 

Removal Sequence

 

Troubleshooting

 

Battery Operations

 

 

 

 

 

 

 

 

 

Index

Product Description

 

Pin Assignments

 

 

 

 

 

 

Preface

This Maintenance and Service Guide is a troubleshooting reference that can be used when servicing the Compaq Presario 305 Model Portable Computers. Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 305 Model 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.

WARNING: The computer is designed to be electrically grounded. To ensure proper operation, plug the AC power cord into a properly grounded electrical outlet only.

CAUTION: To properly ventilate the system, you must provide at least 3 inches (7.62 cm) of clearance on the left and right sides of the computer.

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 305 Model Portable Computer documentation set

Introducing Windows 98 Guide

Compaq Service Training Guides

Compaq Service Advisories and Bulletins

Compaq QuickFind

Compaq Service Quick Reference Guide

Compaq Internet site at http://Compaq.com

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Contents Index Before You BeginMaintenance and Service Guide Preface SymbolsProduct Description Models and Features Models and FeaturesUpper Unit Components Upper Unit ComponentsFront Components Front ComponentsLeft Side Components Left Side ComponentsRight Side Components Right Side ComponentsBottom Unit Bottom of UnitRear Connectors Rear ConnectorsMulti- media Expansion Unit Multi-media Expansion BasePower Management Settings Power Management for WindowsBattery Pack Removing the Battery PackBack to step Multi-media Expansion Unit Removing the Multi-media Expansion unitSerial Number Location Serial Number LocationPreparing for Disassembly Preparing for DisassemblyRemoval and Replacement Procedures Generating StaticRelative Humidity Event 10% 40% 55% Removal Sequence Tool and Software Requirements Plastic Parts Cables and ConnectorsZIF Connectors Display Panel Cable Location Inverter Cable Location Audio Cable Location Touchpad Cable Location Fan Cable Location Light Board Cable Location Speaker Cable Location Battery Cable Location Hard Drive Removing the Hard DriveTo replace the hard drive, reverse the removal procedures Modem Card Removing the Modem CardRemoving the Modem Card RTC Battery Removing the RTC BatteryKeyboard Removing the KeyboardZIF connector Memory Board Removing the Memory BoardSwitch Cover Removing the Switch CoverPosition the computer so the front faces forward Display Panel Removing the Display PanelTo replace display panel, reverse the removal procedures Deck Removing the DeckRemove seven screws T8 from the underside of the unit Insertion Force Connector Back to step Voltage Converter Board Removing the Voltage Converter BoardBack to step Modem Connector Board Removing the Modem Connector BoardPC Card Removing the PC CardPC Card Assembly Removing the PC Card AssemblySystem Board Removing the System BoardBefore You Begin Specifications Back to step Troubleshooting Preliminary Steps Use AC power when running POST, ComputerRunning Post Power-On Self Test PostClearing the Power-on Password View System Information Inspect Compaq DiagnosticsComputer Setup Computer Checkup TestShipping Preparation Contacting Compaq SupportProcedures Diagnostic Error CodesDiagnostic Error Codes USB Troubleshooting Without DiagnosticsSolving Minor Problems ProblemProbable Cause Display Problems Problem Cause Solutions Global Settings tab, the enableInfrared Problems Battery Pack Operating Time Connector Pin Signal Connector Pin AssignmentsIllustrated Parts Catalog System Components Description Part Number System UnitExternal Cables Description Part Miscellaneous Plastics KitScrew Kit Description Miscellaneous PartsSuffix Month Documentation and SoftwarePhysical and Environmental SpecificationsSystem I/O Address Diskette Drive