HP 1915, 1930, 1925, 1920 manual Maintenance & Service Guide, Symbols

Page 2

Maintenance & Service Guide

Presario 1900 Series

Models: 1900T, 1905, 1906, 1910, 1915, 1919, 1920, 1922, 1925, 1926, 1927, 1928, 1929, and 1930

Before You Begin

 

Specifications

 

Parts Catalog

 

 

 

 

 

Removal Sequence

 

Troubleshooting

 

Battery Operations

 

 

 

 

 

 

 

 

 

 

Product Description

 

Pin Assignments

 

Index

 

 

 

 

 

Preface

This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the Compaq Presario 1900 Series Portable Computers.

Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 1900 Series Portable Computers without notice. See Notice for license and nondisclosure agreements.

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 1900 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 Pin Assignments Battery OperationsIndex Maintenance & Service Guide SymbolsBefore You Begin Specifications Specifications Specifications System DMA Display Information System I/O AddressSystem Memory Catalog TFT Display10.0-GB MetricDrive LS-120 Drive CD ROM Drive DVD Drive 24XIllustrated Parts Catalog Before You BeginIllustrated Parts Catalog System UnitDescription Spare Part Number BoardsDocumentation Software Display Panel Assembly Description Spare Part NumberMass Storage Devices Mass Storage DevicesMiscellaneous Hardware Plastics Kit Miscellaneous Hardware Plastics Kit Description QuantityDescription Spare Part Number AC 45W 358976 Adapter 001 Documentation and Software QuickFind Part Number SuffixHard Drive System MemoryDiskette Drive MiscellaneousModels and Features Status Panel Left Side Components Bottom Unit Left Side Top Wedge ComponentsControls Lights Models FeaturesControls and Lights Status Panel Lights Port Replicator Connectors Components Power Management Left Side ComponentsRight Side Components Right Side ComponentsBottom of Unit Bottom UnitWedge Components Left Side Top Components Removable Drive WedgeRight Side Components Removable Drive Wedge Rear Connectors Product DescriptionIntegrated 10/100BaseT Ethernet Port Replicator Connectors Product DescriptionPort Replicator Components Integrated 10/100BaseT Ethernet Port Replicator ComponentsRebooting After a Lockup Power Management SettingsHibernation Mode Full Off Main Power Off ModeRemoval and Replacement Procedures Serial NumberTypical Electrostatic Voltages Electrostatic DischargeGenerating Static Relative Humidity Event 10% 40% 55%Removal and Replcement Procedures Select the desired illustration Cables and ConnectorsCables Plastic PartsZIF Connector Speaker Assembly Preparing the Computer for Disassembly How to use Processor JigRemoving the Battery Pack Battery PackRemoval and Replacement Procedures Removing the Hard DriveRemoving the Keyboard Return to Removal Replacement Procedures Removing the Memory Module Display Panel Assembly Removing the ModemRemoval and Replacement Procedures Removing the Heatspreader with Thermal Pad Removing the Modem Cover Removing Fan Mounting Bracket Disconnecting Fan Cable Removing the Processor Removing Display Panel Assembly Display Panel AssemblyRemoving the 13.3 Display Panel Assembly Removal and Replacement Procedures Removal and Replacement Procedures Next Step Return to Removal Replacement Procedures Removing the Upper CPU Cover with Palmrest and TouchPad Remove two screws on the rear of the unit Replacement Procedures Removing the Hard Drive/Battery Charger Board Removing Converter Board Low Voltage Differential Signal Board Removing the Fan Assembly To remove the fan assembly, complete the following stepsRemoving the System Board System BoardNext Step Next Step Index Speaker Assembly Disassembling the Removable Drive Wedge Disassembling WedgeDisassembling Removable Drive Wedge Removal and Replacement Procedures Removal and Replacement Procedures Remove the reinforcement bracket from the front of the wedge Removing the DVD or CD- ROM Drive DVD or CD ROM DriveRemoving DVD or CD-ROM Drive Removing the System to Wedge Interface Board Removing the Diskette Drive or the LS-120 Drive Remove the screw from Removing the Wedge to the Port Replicator Interface Board Electrostatic DischargeLocking Processor Unlocking Processor Troubleshooting Run Compaq diagnostics Preliminary StepsClearing Power-on Password Power-On Self-Test Messages Running PostDiagnostic Error Codes Processor Test Error CodesView System Information Inspect Compaq DiagnosticsComputer Checkup Test System MemoryContacting Compaq Support Shipping PreparationTroubleshooting Without Diagnostics Before Replacing PartsSolving Battery Pack and Battery Gauge Problems Solving Minor ProblemsSolving Audio Problems Solving CD/DVD Drive ProblemsSolving PC Card Problems Solving Power ProblemsDisposing of a Used Battery Pack Increasing Battery Pack Operating TimeConditioning a Battery Pack Minimizing the Energy RequiredPresario 1900 Series Keyboard/Mouse Connector Parallel ConnectorSerial Connector External VGA Monitor Connector
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