Dell™ Inspiron™ N4020/N4030 Service ManualNotes, Cautions, and WarningsInformation in this document is subject to change without notice.© 2010 Dell Inc. All rights reserved.Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.Trademarks used in this text: Dell, the DELL logo, and Inspiron are trademarks of Dell Inc.; Bluetooth is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dellunder license; Microsoft, Windows, Windows Vista, and the Windows Vista start button logo are either trademarks or registered trademarks of Microsoft Corporation in the UnitedStates and/or other countries.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 Inc. disclaims anyproprietary interest in trademarks and trade names other than its own.Regulatory model P07G series Regulatory type P07G001; P07G003March 2010 Rev. A00Before You BeginBatteryHard DriveOptical DriveModule CoverMemory Module(s)KeyboardWireless Mini-CardPalm RestPower Button BoardDisplayCameraInternal Card With Bluetooth® Wireless TechnologySystem BoardCoin-Cell BatteryThermal Cooling AssemblyProcessor ModuleI/O BoardSpeakersBattery Latch AssemblyFlashing the BIOSNOTE: A NOTE indicates important information that helps you make better use of your computer.CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.WARNING: A WARNING indicates a potential for property damage, personal injury, or death.