Dell Latitude E5400 Discrete Service Manual

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.

If you purchased a Dell n Series computer, any references in this document to Microsoft Windows operating systems are not applicable.

Information in this document is subject to change without notice. © 2009 Dell Inc. All rights reserved.

Reproduction of this material in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, Latitude, TravelLite, Wi-Fi Catcher, and ExpressCharge, are trademarks of Dell Inc.; Intel, Pentium, Celeron, Intel Atom, and Core are either trademarks or registered trademarks of Intel Corporation; Bluetooth is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell under license; TouchStrip is a trademark of Zvetco Biometrics, LLC; Blu-ray Disc is a trademark of the Blu-ray Disc Association; Microsoft, Windows, Windows Server, MS-DOS, Aero, Windows Vista, and the Windows Vista start button are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries; Adobe, the Adobe logo, and Adobe Flash Player are trademarks of Adobe Systems Incorporated.

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 any proprietary interest in trademarks and trade names other than its own.

July 2009 Rev. A00

System Setup

Your computer offers the following BIOS and System Setup options:

• Access System Setup by pressing <F2>
• Bring up a one-time boot menu by pressing <F12>
• Start the Pre-boot System Assessment by pressing <Fn> and the power button

<F12> Menu

Press <F12> when the Dell logo appears to initiate a one-time boot menu with a list of the valid boot devices for the computer. Diagnostics and Enter Setup options are also included in this menu. The devices listed on the boot menu depend on the bootable devices installed in the computer. This menu is useful when you are attempting to boot to a particular device or to bring up the diagnostics for the computer. Making changes in the boot menu does not make any changes to the boot order stored in the BIOS.

Entering System Setup

Press <F2> to enter System Setup and make changes to user-definable settings. If you have trouble entering System Setup using this key, press <F2> when the keyboard lights first flash.

Boot Menu

Your computer features an enhanced one-time boot menu:

• Easier access--Access the menu by pressing <F12> during system boot
• User prompting--The missing keystroke is now displayed on the BIOS splash screen
• Added diagnostics options--The boot menu now includes two new options: IDE Drive Diagnostics (90/90 hard drive diagnostics) and Boot to the Utility Partition

Drive BIOS Quicktest

The Drive BIOS Quicktest allows you to test the physical functionality of the hard drive without having to locate and download files from support.dell.com or make bootable floppies or CDs. Select IDE Drive Diagnostics from the boot menu to initiate the test.

Navigation Keystrokes

Use the following keystrokes to navigate the System Setup screens.

System Setup Menu Options

The following tables describe the menu options for the System Setup BIOS.

General

System Information

Battery Information

Indicates the primary battery and the media bay battery status. Also displays the type of AC adapter connected to the computer.

Boot Sequence

The computer attempts to boot from the sequence of devices specified in this list:

• Diskette drive
• USB Storage Device
• CD/DVD/CD-RW Drive.
• Internal HDD
• Cardbus NIC
• Onboard NIC

This list specifies the order that the BIOS searches devices when trying to find an operating system to boot. To change the boot order, select the device to be changed in the list then click the up/down arrows or use the keyboard PgUp/PgDn keys to change the boot order of the device. The boot devices can also be de-selected from the list using the check boxes.

Date/Time

Displays current date and time settings.

System Configuration

Video

Security

Performance

Power Management

POST Behavior

Virtualization Support

Wireless

Maintenance

System Logs

Diagnostics

Device Status Lights

• Turns on when you turn on the computer and blinks when the computer is in a power management mode.
• Turns on when the computer reads or writes data.
• Turns on steadily or blinks to indicate battery charge status.
• Turns on when wireless networking is enabled.
• Turns on when a card with Bluetooth® wireless technology is enabled. To turn off only the Bluetooth wireless technology function, right-click the icon in the system tray and select Disable Bluetooth Radio.

Battery Status Lights

If the computer is connected to an electrical outlet, the battery light operates as follows:

• Alternately blinking amber light and blue light -- An unauthenticated or unsupported, non-Dell AC adapter is attached to your laptop.
• Alternately blinking amber light with steady blue light -- Temporary battery failure with AC adapter present.
• Constantly blinking amber light -- Fatal battery failure with AC adapter present.
• Light off -- Battery in full charge mode with AC adapter present.
• Blue light on -- Battery in charge mode with AC adapter present.

Battery Charge and Health

To check the battery charge, press and release the status button on the battery charge gauge to illuminate the charge-level lights. Each light represents approximately 20 percent of the total battery charge. For example, if four lights are on, the battery has 80 percent of its charge remaining. If no lights appear, the battery has no charge.

To check battery health using the charge gauge, press and hold the status button on the battery charge gauge for at least 3 seconds. If no lights appear, the battery is in good condition and more than 80 percent of its original charge capacity remains. Each light represents incremental degradation. If five lights appear, less than 60 percent of the charge capacity remains, and you should consider replacing the battery.

Keyboard Status Lights

The green lights located above the keyboard indicate the following:

• Turns on when the numeric keypad is enabled.
• Turns on when the Caps Lock function is enabled.
• Turns on when the Scroll Lock function is enabled.

LED Error Codes

The following table shows the possible LED codes that may display in a no-POST situation.

Adding and Replacing Parts

This section details the procedures for removing and replacing various components of the Dell Latitude E5400 laptop.

• Battery
• Coin-Cell Battery
• Hard Drive Assembly
• WLAN Card
• WWAN Card
• Processor
• Keyboard
• Display Assembly
• Display Inverter
• Display Panel
• Palm Rest
• I/O Board
• Access Panel
• Hard Drive
• Memory
• Modem
• Heat Sink
• Hinge Cover
• Optical Drive
• Display Bezel
• Display Camera
• Display Cable
• System Board

Removing the Battery

⚠️ 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.

The image shows the bottom of a laptop with the battery partially ejected. The battery is a rectangular block with a textured grip area. A release latch is visible near the battery compartment.

1. Follow the procedures in Before Working Inside Your Computer.
2. Slide the battery release latch into the unlocked position.
3. Remove the battery from the computer.

Removing the Access Panel

⚠️ 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.

The image shows the bottom of a laptop with the access panel removed, revealing internal components such as a fan, heatsink, and memory slots.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Loosen the four captive screws that secure the access panel to the computer.
4. Remove the access panel from the computer.

Removing the Coin-Cell Battery

⚠️ 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.

The image shows a small, coin-shaped battery with wires attached, typically located on the system board.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Disconnect the coin-cell battery cable from the system board.
5. Release the coin-cell battery from the retention clips.

Removing the Hard Drive

⚠️ 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.

The image shows a standard 2.5-inch laptop hard drive, typically mounted in a bracket. The drive has a SATA connector on one end and a pull tab for removal.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the four screws that secure the hard drive to the computer.
5. Using the pull tab, lift the hard drive from the computer.

Removing Memory Modules

⚠️ 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.

The image shows two DIMM slots on the laptop's motherboard. Memory modules are inserted into these slots and secured by clips on either side.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Gently pry the retention clips away from the first memory module.
5. Remove the first memory module from the computer.
6. Gently pry the retention clips away from the second memory module.
7. Remove the second memory module from the computer.

Removing the WLAN Card

⚠️ 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.

The image shows a wireless network card (WLAN), typically a small PCI Express Mini Card with antenna connectors.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Disconnect the WLAN antenna cables from the WLAN card.
5. Remove the screw that secures the WLAN card to the computer.
6. Remove the WLAN card from the computer.

Removing the Modem

⚠️ 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.

The image shows a modem module, typically a small card that connects to the system board.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Disconnect the modem data cable from the modem.
5. Using the pull tab on the modem, disconnect the modem from the system board.
6. Remove the modem module from the computer.

Removing the WWAN Card

⚠️ 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.

The image shows a Wireless Wide Area Network (WWAN) card, similar in form factor to a WLAN card but for cellular connectivity.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Disconnect the WWAN antenna cables from the WWAN card.
5. Remove the screw that secures the WWAN card to the computer.
6. Remove the WWAN card from the computer.

Removing the Heat Sink

⚠️ 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.

The image shows a laptop heat sink assembly, typically consisting of a fan attached to a metal heatsink with heat pipes, designed to cool the CPU and GPU.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Disconnect the fan cable from the system board.
5. Loosen the five captive screws that secure the heat sink to the computer.
6. Lift the heat sink and remove it from the computer.

Removing the Processor

⚠️ 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.

The image shows a CPU (Central Processing Unit) and the socket on the motherboard where it is installed. The socket has a lever mechanism to secure the processor.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the heat sink from the computer.
5. Using a plastic scribe, rotate the processor cam lock counterclockwise.
6. Lifting straight up, remove the processor from the computer.

Removing the Hinge Cover

⚠️ 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.

The image shows a plastic cover that typically runs along the hinge of the laptop display, often concealing screws or cables.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. On the right side of the computer, use a plastic scribe (inserted into the indent) to pry up the hinge cover.
4. Starting from the right and working towards the left, use your fingers to lift the hinge cover away from the computer.

Removing the Keyboard

⚠️ 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.

The image shows a laptop keyboard. The procedure involves releasing tabs and sliding the keyboard backward to disconnect it.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the hinge cover from the computer.
4. Remove the two screws that secure the keyboard to the computer.
5. Pull on the keyboard tab gently to release the edges of the keyboard from the computer.
6. Slide the keyboard toward the back of the computer to disconnect the keyboard from the computer, then lift and remove the keyboard from the computer.

Removing the Optical Drive

⚠️ 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.

The image shows a standard 2.5-inch laptop optical drive (CD/DVD drive), typically secured by a screw and sliding out from the side or front of the laptop.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the optical drive retention screw from the computer.
4. Insert a plastic scribe into the retention screw slot.
5. With the plastic scribe still inserted into the retention screw slot, firmly disengage the optical drive from its connector, sliding the drive about a quarter of an inch from the computer's media bay.
6. Remove the optical drive from the computer.

Removing the Display Assembly

⚠️ 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.

The image shows the laptop base with the display assembly detached, revealing the internal connections and mounting points.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the hinge cover from the computer.
5. Remove the keyboard from the computer.
6. Disconnect the wireless antennas and remove them from their routing paths.
7. Remove the two display assembly screws from the bottom of the computer.
8. Turn the computer upside-down and pivot the display into the fully-open position.
9. Disconnect the camera cable from the system board.
10. Disconnect the display data cable from the system board.
11. Pull the wireless antennas through the hole in the chassis, then remove the antennas from their routing paths to either side of the computer.
12. Remove the four screws that secure the display assembly to the computer chassis.
13. Lifting straight up, remove the display assembly from the computer.

Removing the Palm Rest

⚠️ 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.

The image shows the laptop base with the palm rest removed, exposing the motherboard, fan, and other internal components.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the hinge cover from the computer.
5. Remove the keyboard from the computer.
6. Remove the display assembly from the computer.
7. Turn the computer upside-down and remove the twelve palm rest screws from the bottom of the computer.
8. Turn the computer right-side up and disconnect the fingerprint reader data cable from the system board.
9. Disconnect the touch pad data cable from the system board.
10. Disconnect the speaker cable from the system board.
11. Disconnect the display data cable from the system board.
12. Remove the three palm rest screws located along the top edge of the computer.
13. Remove the four remaining palm rest screws from the computer.
14. Starting in the back right corner of the palm rest, carefully release the palm rest from the bottom plastics of the computer. Work your way around the computer until the palm rest is completely free.

Removing the System Board

⚠️ 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.

The image shows the laptop chassis with the system board partially lifted, revealing its connection to the I/O board and mounting screws.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the hinge cover from the computer.
5. Remove the keyboard from the computer.
6. Remove the display assembly from the computer.
7. Remove the palm rest from the computer.
8. Disconnect the modem data cable from the system board.
9. Turn the computer right-side up on the work surface.
10. Remove the two screws that secure the system board to the computer chassis.
11. Lift the left side of the system board to disengage it from the I/O board, then remove the system board from the computer and set it aside.

Removing the I/O Board

⚠️ 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.

The image shows the I/O (Input/Output) board of the laptop, typically containing ports like USB, audio jacks, and Ethernet, connected to the system board.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the hinge cover from the computer.
5. Remove the keyboard from the computer.
6. Remove the display assembly from the computer.
7. Remove the palm rest from the computer.
8. Remove the system board from the computer.
9. Remove the screw that secures the I/O board to the computer.
10. Lift up the left edge of the I/O board, and remove the I/O board from the computer.

Removing the Display Bezel

⚠️ 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.

The image shows the display bezel, the plastic frame surrounding the laptop screen.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the hinge cover from the computer.
5. Remove the keyboard from the computer.
6. Remove the display assembly from the computer.
7. Remove the palm rest from the computer.
8. Remove the system board from the computer.
9. Gently pry the display bezel from the display assembly by tucking your fingers under one edge of the bezel and working your way around the entire bezel until it is completely free.
10. Remove the display bezel from the computer.

Removing the Display Inverter

⚠️ 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.

The image shows a display inverter board, a small circuit board that provides power to the LCD backlight.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the hinge cover from the computer.
5. Remove the keyboard from the computer.
6. Remove the display assembly from the computer.
7. Remove the display bezel from the display assembly.
8. Remove the system board from the computer.
9. Remove the screw that secures the LCD inverter to the display assembly.
10. Flip over the display inverter so that you can access the power cable connector.
11. Disconnect the display inverter power cable.
12. Disconnect the display inverter data cable.
13. Remove the display inverter from the display assembly.

Removing the Camera

⚠️ 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.

The image shows a laptop webcam module, typically a small camera sensor with a data cable.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the hinge cover from the computer.
5. Remove the keyboard from the computer.
6. Remove the display assembly from the computer.
7. Remove the display bezel from the display assembly.
8. Gently pry the retaining clip away from the camera and lift the camera from its socket.
9. Disconnect the camera data cable and remove the camera from the display assembly.

Removing the Display Panel

⚠️ 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.

The image shows the laptop display assembly with the panel detached, revealing the internal structure and mounting points.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the keyboard from the computer.
5. Remove the display assembly from the computer.
6. Remove the display bezel from the display assembly.
7. Remove the eight screws that secure the display panel to the display assembly.
8. Lift the display panel from the display assembly.

Removing the Display Cable

⚠️ 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.

The image shows a display cable, which connects the laptop screen to the system board. It has connectors on both ends.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the keyboard from the computer.
5. Remove the display assembly from the computer.
6. Remove the display bezel from the display assembly.
7. Gently squeeze the release latches on either side of the display cable, then remove the display data cable from the display panel.

Removing the Hard Drive Bracket

⚠️ 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.

The image shows a hard drive bracket, which is a metal frame that secures the hard drive to the laptop chassis.

1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the battery from the computer.
3. Remove the access panel from the computer.
4. Remove the hard drive from the computer.
5. Remove the four screws that secure the hard drive to the hard drive bracket.
6. Remove the hard drive from the hard drive bracket.

Specifications

? NOTE: Offerings may vary by region. For more information regarding the configuration of your computer, click Start (or Start in Windows® XP)→ Help and Support, and then select the option to view information about your computer.

Processor

System Information

3-in-1 Memory Card Reader

Memory

Ports and Connectors

Communications

Video

Audio

Display

Keyboard

Touch Pad

Battery

AC Adapter

Physical

Environmental

Working on Your Computer

This section provides essential safety guidelines and procedures for working on your Dell Latitude E5400 laptop.

Before Working Inside Your Computer

Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that the following conditions exist:

• You have performed the steps in Working on Your Computer.
• 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 reverse order.

⚠️ 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: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

⚠️ 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 the back of the 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: 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.

? NOTE: The color of your computer and certain components may appear differently than shown in this document.

To avoid damaging your computer, perform the following steps before you begin working inside the computer.

1. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.
2. Turn off your computer (see Turning Off Your Computer).
3. If the computer is connected to a docking device (docked) such as the optional Media Base or Battery Slice, undock it.

⚠️ CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.

4. Disconnect all network cables from the computer.
5. Disconnect your computer and all attached devices from their electrical outlets.
6. Close the display and turn the computer upside-down on a flat work surface.

⚠️ CAUTION: To avoid damaging the system board, you must remove the main battery before you service the computer.

7. Remove the main battery (see Removing the Battery).
8. Turn the computer top-side up.
9. Open the display.
10. Press the power button to ground the system board.

⚠️ CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the display.

⚠️ CAUTION: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate static electricity, which could harm internal components.

11. Remove any installed ExpressCards or Smart Cards from the appropriate slots.
12. Remove the hard drive (see Removing the Hard Drive).

Recommended Tools

The procedures in this document may require the following tools:

• Small flat-blade screwdriver
• #0 Phillips screwdriver
• #1 Phillips screwdriver
• Small plastic scribe
• Flash BIOS update program CD

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.

1. Shut down the operating system:
   • In Windows Vista®: Click Start ⊞, then click the arrow in the lower-right corner of the Start menu as shown below, and then click Shut Down.
   • In Windows® XP: Click Start → Turn Off Computer→ Turn Off.
   The computer turns off after the operating system shutdown process is complete.
2. Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for about 4 seconds to turn them off.

After Working Inside Your Computer

After you complete any replacement procedure, ensure you connect any external devices, cards, and cables before turning on your computer.

⚠️ CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteries designed for other Dell computers.

1. Connect any external devices, such as a port replicator, battery slice, or media base, and replace any cards, such as an ExpressCard.
2. Connect any telephone or network cables to your computer.

⚠️ CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the computer.

3. Replace the battery.
4. Connect your computer and all attached devices to their electrical outlets.
5. Turn on your computer.