# Dell™ Latitude™ C840 Service Manual

Before You Begin

Preparing to Work Inside the Computer

Recommended Tools

Computer Orientation

Screw Identification

System Components

Hard Drive and Fixed Optical Drive

Hard Drive

Fixed Optical Drive

System Upgrades

Memory Modules

Modem Daughter Card

Mini PCI Card

Keyboard

Display

Display Overview

Hinge Cover

Display Assembly

Display Bezel

Display Panel

Display Latch

Microprocessor Thermal-Cooling Assembly

Microprocessor Module

Video Graphics Board

Palm Rest

Reserve Battery

System Board

Battery and Module Bay Latches

Battery Charger Board

LED Board

Fan

RJ-11/RJ-45 Module

Pin Assignments for I/O Connectors

## Notes, Notices, and Cautions

| NOTE: A NOTE indicates important information that helps you make better use of your computer.

| NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

| CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

Information in this document is subject to change without notice.
© 2002 Dell Computer Corporation. All rights reserved.

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, and Latitude are trademarks of Dell Computer Corporation; Intel is a registered trademark of Intel Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

This product incorporates copyright protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited.

February 2002 Rev. A00