Compaq presario 1900, presario1 905, presario 1906, presario 1910, presario 1915 schematic

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Compaq.com - Compaq Discovery 1900 Series Maintenance and Service Guide - Models: 1905, 1910, 1915, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Models and Features

Controls and Lights

Status Panel

Left Side Components

Right Side Components

Bottom of Unit

Left Side and Top Wedge Components

Right Side Wedge Components

Rear Connectors

Port Replicator Connectors

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Welcome to the Maintenance & Service Guide (MSG). This online guide is designed to serve the needs of those whose job it is to repair Compaq products. Many of the components of the hardcopy MSG are contained in this online guide. The Notice, contains the copyright and trademark information. The Preface shows symbol conventions, Technician Notes and Serial Number locations on the unit.

Compaq.com - Compaq Discovery 1900 Series Maintenance and Service Guide - Models: 1905, 1910, 1915, and 1920

Port

This MSG will be periodically maintained and updated online as needed.

Replicator Components

For content comments or questions, contact the

Power Management

To report a technical problem, contact your Regional Support Center or IM Help Center.

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Editor.

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Notice

The information in this guide is subject to change without notice.

COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.

This guide contains information protected by copyright. No part of this guide may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation.

Compaq, Presario Registered U. S. Patent and Trademark Office.

Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation. Windows 98 is a trademark of Microsoft Corporation.

The software described in this guide is furnished under a license agreement or nondisclosure agreement. The software may be used or copied only in accordance with the terms of the agreement.

Product names mentioned herein may be trademarks and/or registered trademarks of their respective companies.

Maintenance and Service Guide

Compaq Presario 1900 Series Portable Computers

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

First Edition (Oct. 1998) Compaq Computer Corporation

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1815, 1820, and 1825

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

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 1900 Series Portable Computers.

Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 1900 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

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1815, 1820, and 1825

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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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Home Page | Notice | Preface | Product Description | Troubleshooting

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Product Description

Models and Features

Controls and Lights

Status Panel

Left Side Components

Right Side Components

Bottom of Unit

Left Side and Top Wedge Components

Right Side Wedge Components

Rear Connectors

Compaq Presario 1900 Series Portable Computers are a new generation of multimedia portable computers with an ultimate thin and lightweight design, outstanding audio and video, advanced core features, and attractive styling.

The Removable Drive Wedge

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

Port Replicator Connectors

Port Replicator Components

Power Management

provides multimedia expansion capability with a DVD or CD-ROM Drive and a Diskette Drive or LS120 Drive integrated into one removable component.

Compaq Presario 1900 Series Portable Computers also have an optional integrated 10/100BaseT Ethernet Port Replicator allowing the user to quickly and easily attach or detach the computer from peripheral devices. It contains a full array of ports, some which are accessible while the system is docked to the Port Replicator.

This full-

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

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function Intel Celeron and Pentium II - based portable computer provides full desktop functionality.

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Troubleshooting

Preliminary Steps

Clearing the PowerOn Password

Power-On Self Test (POST)

Compaq Diagnostics

Diagnostic Error Codes

Troubleshooting Without Diagnostics

Solving Minor Problems

Contacting Compaq Support

This section covers troubleshooting information for the Compaq Presario 1900 Series Portable Computers. The basic steps in troubleshooting include:

Follow the Preliminary Steps .

Run the Power-On Self-Test (POST).

Follow the recommended actions described in the diagnostic tables, if you are unable to run POST or if POST displays an error message.

When following the recommended actions in the Sections on POST and

Diagnostic Error Codes perform them

in the order listed. Rerun POST after each recommended action until the problem is solved and no error message occurs. Once the problem is solved, do not complete the remaining recommended actions.

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

If the problem is intermittent, check the

NOTE:

computer several times to verify that the problem is solved.

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Home Page | Notice | Preface | Product Description | Troubleshooting

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

System Unit

Boards

Display Assembly

Mass Storage Devices

Miscellaneous Hardware and Plastics Kit

Miscellaneous Hardware and Plastics Wedge Kit

This section provides an illustrated parts breakdown and a reference for spare parts for the Presario 1900 Series Portable Computer.

Miscellaneous Parts

Documentation and Software

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The computer (1) serial number should be provided to Compaq whenever requesting information or ordering spare parts. The serial number is located

Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

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bottom of unit.

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removal and Replacement Procedures

This section explains the removal and replacement procedures for the computer.

Serial Number

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack

Hard Drive

Keyboard

Memory Module

Report the computer serial number to Compaq when requesting information or ordering spare parts. The serial number is located

on bottom of unit.

Modem

Heatspreader

Processor

Display Panel Assembly

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

Upper CPU Cover with Palmrest and TouchPad

Hard Drive/ Battery Charger Board

Converter Board

Low Voltage Differential Signal Board

Fan Assembly

System Board

Speaker Assembly

Disassembling the Wedge

DVD or CD Drive

System to Wedge Interface Board

Diskette Drive

Wedge to Port Replicator Interface Board

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

| Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Specifications

This chapter covers the following specifications of Compaq Presario 1900 Series Portable Computers:

Physical and Environmental

System Interrupts

System DMA

System I/O Addresses

System Memory Catalog

Display

Diskette Drive or LS-120 Drive

Hard Drive

CD ROM or DVD Drive

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Home Page | Notice | Preface | Product Description | Troubleshooting

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Connector Pin Assignments

This appendix provides connector pin assignment tables for Compaq Presario 1900 Series Portable Computers. For more information on connectors, refer to the section on Rear Connectors .

NOTE: The signals in all tables of this appendix are considered active high unless otherwise indicated by an asterisk (*).

Parallel Connector

Pin Signal Pin Signal

1 Strobe* 10 Acknowledge* 2 Data Bit 0 11 Busy 3 Data Bit 1 12 Paper Out 4 Data Bit 2 13 Select 5 Data Bit 3 14 Auto Linefeed* 6 Data Bit 4 15 Error* 7 Data Bit 5 16 Initialize Printer* 8 Data Bit 6 17 Select In* 9 Data Bit 7 18-25 Signal Ground * = Active low

Serial Connector

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

Connector Pin Signal

Carrier Detect

Receive Data

Transmit Data

Data Terminal Ready

Signal Ground

Data Set Ready

Ready to Send

Clear to Send

Ring Indicator

Keyboard/Mouse Connector

Connector Pin Signal

Data

Not defined

Ground

+5 VDC

Clock

Not defined

External VGA Monitor Connector

Connector Pin Signal

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Red Analog

Green Analog

Blue Analog

Not connected

Ground

Ground Analog

Not connected

Ground

Monitor Detect

DDC2B Data

Horizontal Sync

Vertical Sync

DDC2B Clock

Universal Serial Bus Connector

Connector Pin Signal

1 Ground

2 D+

3 D-

4 Power

Modem Connector

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

Connector Pin Signal

Unused

Tip

Ring

Unused

This information was not available at time of publication.

Port Replicator Connector

Pin Signal Pin Signal Pin Signal Pin Signal

This information was not available at time of publication.

LAN Connector

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Models and Features

Controls and Lights

Status Panel

Left Side Components

Compaq Discovery 1900 Series Portable Computer Models

Model 1905

Display 12. 1" TFT 12. 1" TFT Processor Intel Celeron/266-MHz

w/128K Cache

Hard Drive 4.0-GB 4.0-GB

Model 1906

Intel Celeron/266-MHz w/128K Cache

Right Side Components

Bottom of Unit

Left Side and Top Wedge Components

Right Side Wedge Components

Rear Connectors

Modem 56.0 Kbps PCI Data/Fax 56.0 Kbps PCI Data/Fax CD Drive 24X CD-ROM 24X CD-ROM

Model 1910

Display 12.1" TFT or 13. 3" TFT 12. 1" TFT or 13.3" TFT Processor Intel Celeron/300-MHz

w/128K Cache or PII/300-MHz w/512 Cache

Hard Drive 6.4-GB or 4.8-GB 4.0-GB Modem 56.0 Kbps PCI Data/Fax

or 56.0 Kbps PCI Data/ Fax I

Model 1915

Pentium II/266-MHz w/512K or 256K Cache or PII/300-MHz w/512 Cache

56.0 Kbps PCI Data/Fax or

56.0 Kbps PCI Data/Fax (International)

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

Port Replicator Connectors

Port Replicator Components

Power Management

DVD or CD Drive 24X CD Drive or 4X DVD DVD or 24X CD Drive

Model 1919

Model 1920

Display 13. 3" TFT 13. 3" TFT Processor Intel Celeron/300-MHz

w/128K Cache

Pentium II/300-MHz w/256K Cache

Hard Drive 6.4-GB 4.0-GB or 6.4-GB Modem K-56.0 Kbps PCI Data/

Fax

56.0 Kbps PCI Data/Fax or

56.0 Kbps PCI Data/Fax (International)

DVD Drive DVD Drive DVD Drive

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Home Page | Notice | Preface | Product Description | Troubleshooting

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Controls and Lights

United States June 27, 2004

Models and Features

Controls and Lights

Status Panel

Left Side Components

Right Side Components

Bottom of Unit

Left Side and Top Wedge Components

Right Side Wedge Components

Rear Connectors

Port Replicator Connectors

Port Replicator Components

Front of Unit

1. Display 9. TouchPad

Backlight Switch Button

3.Instant

Internet Access Button

4.Instant

Search Button

5. Power

(On/Off) Button

6. Instant

ECommerce (or Favorite Website) Button

7. Instant

E-Mail Button

10. Left TouchPad Button

11. Power (On/Off) Light

12. Scroll (Up/ Down) Button

13. Battery Charge Light

14. Display Panel Release Button

15. Right TouchPad Button

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Keyboard

16. Integrated Speakers

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Status Panel Lights

Models and Features

Controls and Lights

Status Panel

Status

Panel Lights

1. AC Adapter Light

Left Side Components

Right Side Components

Bottom of Unit

Left Side and Top Wedge Components

Right Side Wedge Components

Rear Connectors

2. Num Lock Light

3. Caps Lock Light

4. Scroll Lock Light

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Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

Port Replicator Connectors

Port Replicator Components

Power Management

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