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Presario 1800 Series
Models: XL180, XL181, XL182, XL183, XL185,
and XL190, XL191, XL192
Before You Begin
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.
©2000 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A.
Compaq, Presario 1800 Series Registered U.S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.
Windows 98 and Windows 2000 are trademarks 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 1800 Series Notebook Computer
First Edition (July 2000) Compaq Computer Corporation
privacy and legal statement
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
1800 S
ERIES
B
EFORE YOU BEGIN
1

Presario 1800 Series
Models: XL180, XL181, XL182, XL183, XL185,
and XL190, XL191, XL192
Preface
This Maintenance and Service Guide is a troubleshooting guide for use as a reference when
servicing the Compaq Presario 1800 Series Notebook Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq Presario
1800 Series Notebooks without notice.
Symbols
The following words and symbols mark special messages throughout this guide.
WARNING: Text set off in this manner indicates that a failure to follow directions
in the warning could result in bodily harm or loss of life.
Å
CAUTION: Text set off in this manner indicates that a failure to follow directions
in the caution could result in damage to equipment or loss of data.
Ä
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
Å
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.
2 B
EFORE YOU BEGIN
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
1800 S
ERIES

Presario 1800 Series
Models: XL180, XL181, XL182, XL183, XL185,
and XL190, XL191, XL192
Serial Number
1
The unit’s serial number
parts. The serial number is located on the underside of the Notebook as shown below.
is required when requesting information or ordering spare
Locating Additional Information
The Compaq Presario 1800 Series Notebook Computer documentation set is available to
support this product. It includes and is not limited to the following items:
• Beyond Setup Guide
• Compaq Service Advisories and Bulletins
• Operating System Guides (Compaq and Microsoft)
• Read-This-First Cards
• Service Training Guides
• Warranty Statement
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
1800 S
ERIES
B
EFORE YOU BEGIN
3