Dell Inspiron 3420 Manual de usuario

Dell Inspiron M4040/

14-N4050 Owner’s Manual

Regulatory model: P22G Regulatory type: P22G001; P22G002

Notes, Cautions, and Warnings

NOTE: A NOTE indicates important information that helps you make better use of

your computer.

CAUTION: A CAUTION indicates potential damage to hardware or loss of data if

instructions are not followed.

WARNING: A WARNING indicates a potential for property damage, personal

injury, or death.

____________________

Information in this document is subject to change without notice.

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.; Microsoft®, Windows®, and the

Windows start button logo are either trademarks or registered trademarks of Microsoft Corporation

in the United States and/or other countries.

Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc.

is strictly forbidden.

Regulatory model: P22G Regulatory type: P22G001; P22G002

2011 - 05 Rev. A00

Contents 3

Contents

1 Before You Begin. . . . . . . . . . . . . . . . . . . . 9

Recommended Tools. . . . . . . . . . . . . . . . . . . . 9

Turning Off Your Computer. . . . . . . . . . . . . . . . . 9

Before Working Inside Your Computer . . . . . . . . . 10

2Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Removing the Battery . . . . . . . . . . . . . . . . . . 13

Replacing the Battery . . . . . . . . . . . . . . . . . . 14

3 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . 15

Removing the Keyboard . . . . . . . . . . . . . . . . . 15

Replacing the Keyboard . . . . . . . . . . . . . . . . . 17

4 Memory Module(s) . . . . . . . . . . . . . . . . . 19

Removing the Memory Module(s) . . . . . . . . . . . . 19

Replacing the Memory Module(s). . . . . . . . . . . . 20

5 Optical Drive . . . . . . . . . . . . . . . . . . . . . . 23

Removing the Optical Drive . . . . . . . . . . . . . . . 23

4Contents

Replacing the Optical Drive . . . . . . . . . . . . . . . 24

6 Palm-Rest Assembly . . . . . . . . . . . . . . . 25

Removing the Palm-Rest Assembly . . . . . . . . . . . 25

Replacing the Palm-Rest Assembly . . . . . . . . . . . 28

7 Power Button Board . . . . . . . . . . . . . . . 31

Removing the Power Button Board . . . . . . . . . . . 31

Replacing the Power Button Board . . . . . . . . . . . 32

8HardDrive. . . . . . . . . . . . . . . . . . . . . . . 33

Removing the Hard Drive . . . . . . . . . . . . . . . . 33

Replacing the Hard Drive . . . . . . . . . . . . . . . . 35

9 Wireless Mini-Card . . . . . . . . . . . . . . . . 37

Removing the Mini-Card . . . . . . . . . . . . . . . . . 37

Replacing the Mini-Card. . . . . . . . . . . . . . . . . 38

10 Audio Board . . . . . . . . . . . . . . . . . . . . . . 41

Removing the Audio Board . . . . . . . . . . . . . . . 41

Replacing the Audio Board . . . . . . . . . . . . . . . 42

Contents 5

11 Coin-Cell Battery . . . . . . . . . . . . . . . . . . . 43

Removing the Coin-Cell Battery . . . . . . . . . . . . . 43

Replacing the Coin-Cell Battery. . . . . . . . . . . . . 45

12 USB Board . . . . . . . . . . . . . . . . . . . . . . . . 47

Removing the USB Board . . . . . . . . . . . . . . . . 47

Replacing the USB Board . . . . . . . . . . . . . . . . 48

13 Thermal Cooling Assembly . . . . . . . . . . . 49

Removing the Thermal Cooling Assembly . . . . . . . 49

Replacing the Thermal Cooling Assembly . . . . . . . 50

14 Processor Module (For Inspiron 14-N4050 Only)

Removing the Processor Module . . . . . . . . . . . . 51

Replacing the Processor Module . . . . . . . . . . . . 52

15 Hinge Cover . . . . . . . . . . . . . . . . . . . . . . . 55

Removing the Hinge Cover . . . . . . . . . . . . . . . 55

Replacing the Hinge Cover . . . . . . . . . . . . . . . 57

16 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Display Assembly . . . . . . . . . . . . . . . . . . . . 59

6Contents

Removing the Display Assembly . . . . . . . . . . 59

Replacing the Display Assembly . . . . . . . . . . 61

Display Bezel. . . . . . . . . . . . . . . . . . . . . . . 62

Removing the Display Bezel . . . . . . . . . . . . 62

Replacing the Display Bezel . . . . . . . . . . . . 63

Removing the Display Panel . . . . . . . . . . . . 63

Replacing the Display Panel . . . . . . . . . . . . 66

17 Camera Module . . . . . . . . . . . . . . . . . . . 69

Removing the Camera Module. . . . . . . . . . . . . . 69

Replacing the Camera Module . . . . . . . . . . . . . 70

18 System Board. . . . . . . . . . . . . . . . . . . . . 73

Removing the System Board . . . . . . . . . . . . . . . 73

Replacing the System Board . . . . . . . . . . . . . . . 75

Entering the Service Tag in the BIOS . . . . . . . . . . 76

19 Flashing the BIOS . . . . . . . . . . . . . . . . . 77

Contents 7

8Contents

Before You Begin 9

Before You Begin

This manual provides procedures for removing and installing components in

your computer. Before you begin any procedure in this book, ensure that:

• You have performed the steps in "Turning Off Your Computer" on page 9

and "Before Working Inside Your Computer" on page 10.

• You have read the safety information that shipped with your computer

• A component can be replaced or—if purchased separately—installed by

performing the removal procedure in the reverse order.

Recommended Tools

The procedures in this document may require the following tools:

• Small flat-blade screwdriver

•Phillipsscrewdriver

•Plasticscribe

• BIOS executable update program available at

support.dell.com

Turning Off Your Computer

CAUTION: To avoid losing data, save and close all open files and exit all open

programs before you turn off your computer.

Save and close all open files and exit all open programs.

Click

Start

and then click

Shut Down

The computer turns off after the operating system shutdown process is

completed.

Ensure that the computer is turned off. If your computer did not

automatically turn off when you shut down the operating system, press

and hold the power button until the computer turns off.

10 Before You Begin

Before Working Inside Your Computer

Use the following safety guidelines to help protect your computer from

potential damage and to ensure your own personal safety.

WARNING: Before working inside your computer, read the safety information

that shipped with your computer. For additional safety best practices information,

see the Regulatory Compliance Homepage at

www.dell.com/regulatory_compliance.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist

grounding strap or by periodically touching an unpainted metal surface (such as a

connector on your computer).

CAUTION: Handle components and cards with care. Do not touch the components

or contacts on a card. Hold a card by its edges or by its metal mounting bracket.

Hold a component such as a processor by its edges, not by its pins.

CAUTION: Only a certified service technician should perform repairs on your

computer. Damage due to servicing that is not authorized by Dell is not covered by

your warranty.

CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab,

not on the cable itself. Some cables have connectors with locking tabs; if you are

disconnecting this type of cable, press in on the locking tabs before you

disconnect the cable. As you pull connectors apart, keep them evenly aligned to

avoid bending any connector pins. Also, before you connect a cable, ensure that

both connectors are correctly oriented and aligned.

CAUTION: To avoid damaging the computer, perform the following steps before

you begin working inside the computer.

Ensure that the work surface is flat and clean to prevent the computer

cover from being scratched.

Turn off your computer (see "Turning Off Your Computer" on page 9) and

all attached devices.

CAUTION: To disconnect a network cable, first unplug the cable from your

computer and then unplug the cable from the network device.

Disconnect all telephone or network cables from the computer.

Press and eject any installed cards from the 3-in-1 media card reader.

Disconnect your computer and all attached devices from their electrical

outlets.

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