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Dell Vostro A840 Service Manual
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Dell Vostro A840 Service Manual

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Dell™ Vostro™ A840/A860 Service Manual 
Before You Begin
Module Cover
Memory Module
Mini-Cards
Center Control Cover
Keyboard
Display
Palm Rest
System Fan
Processor Heat Sink
Processor
Hard Drive
Coin-Cell Battery
Optical Drive
Speaker
System Board
Battery Latch Assembly
Flashing the BIOS
Model PP38L, PP37L
 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.
© 2008 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 Vostro are trademarks of Dell Inc.; Bluetooth is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell
under license. Microsoft, Windows, Windows Vista, and Windows Vista start button are either trademarks or registered trademarks of Microsoft Corporation in the United States 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 any
proprietary interest in trademarks and trade names other than its own.
September 2009 Rev. A01

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  • Page 1 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 Vostro are trademarks of Dell Inc.; Bluetooth is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell under license.

  • Page 2: Removing The Module Cover

      CAUTION: 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.   NOTICE: 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).

  • Page 3: Removing The Battery Latch Assembly

      CAUTION: 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.   NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching a connector on the back panel of the computer.
  • Page 4 Back to Contents Page  ...

  • Page 5: Before You Begin

    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.
  • Page 6 To avoid damaging the system board, you must remove the main battery before you service the computer.   NOTICE: 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.  ...

  • Page 7: Flashing The Bios From A Cd

    1. Ensure that the AC adapter is plugged in, the main battery is properly installed, and a network cable is attached.   2. Turn on the computer.   3. Locate the latest BIOS update file for your computer at support.dell.com.   4. Click Download Now to download the file.  ...

  • Page 8: Internal Card With Bluetooth

    CAUTION: 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. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

  • Page 9: Removing The Coin-Cell Battery

      CAUTION: 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.   NOTICE: 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).

  • Page 10: Removing The Processor

      CAUTION: 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.   NOTICE: 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).
  • Page 11 NOTICE: Ensure that the cam lock is in the fully open position before seating the processor. Seating the processor properly in the ZIF socket does not require force.   NOTICE: A processor that is not properly seated can result in an intermittent connection or permanent damage to the processor and the ZIF socket.

  • Page 12: Removing The Processor Heat Sink

      CAUTION: 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   NOTICE: 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).

  • Page 13: Display Assembly

      CAUTION: 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.   NOTICE: 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).

  • Page 14: Replacing The Display Assembly

    CAUTION: 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.   1. Place the display assembly in place and replace the two screws on each side of the display hinges.

  • Page 15: Display Panel

    CAUTION: 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.   1. Align the display bezel over the display panel, and gently snap into place.

  • Page 16: Removing The Display Panel

      CAUTION: 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.   1. Align the display panel brackets with the display panel.

  • Page 17: Display Inverter

    CAUTION: 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.   1. Connect the flex cable to the connector on the inverter board.
  • Page 18 CAUTION: 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.   1. Align the holes on the inverter board with the tabs on the display cover and snap it into position.

  • Page 19: Removing The System Fan

      CAUTION: 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.   NOTICE: 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).

  • Page 20: Removing The Hard Drive

    NOTE: If you are installing a hard drive from a source other than Dell, you need to install an operating system, drivers, and utilities on the new hard drive (see "Restoring Your Operating System" and "Reinstalling Drivers and Utilities" in your Setup Guide).

  • Page 21: Replacing The Hard Drive

    hard drive cage hard drive   NOTICE: When the hard drive is not in the computer, store it in a protective antistatic package (see "Protecting Against Electrostatic Discharge" in the safety instructions shipped with your computer).  Replacing the Hard Drive  ...

  • Page 22: Removing The Center Control Cover

      CAUTION: 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.   NOTICE: 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).

  • Page 23: Replacing The Center Control Cover

     Replacing the Center Control Cover   1. Snap the center control cover in place.   2. Turn the computer over and replace the screws that secure the hinge cover to the battery bay. For the Vostro™ A840, there are four screws. For the  Vostro™ A860, there are eight screws.    3. Slide the battery into the battery bay, until it clicks in place. Back to Contents Page  ...

  • Page 24: Removing The Keyboard

      CAUTION: 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.   NOTICE: 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).
  • Page 25 2. Align the five tabs along the bottom of the keyboard and slide them under the palm rest.   3. Replace the two screws at the top of the keyboard.   4. Replace the center control cover (see Center Control Cover).

  • Page 26: Removing The Memory Module(S)

    Install only memory modules that are intended for your computer. NOTE: Memory modules purchased from Dell are covered under your computer warranty. Your computer has two user-accessible SODIMM sockets that can be accessed from the bottom of the computer.
  • Page 27 As the computer boots, it detects the additional memory and automatically updates the system configuration information. To confirm the amount of memory installed in the computer, click Start ® Help and Support® Dell System Information. Back to Contents Page  ...

  • Page 28: Removing The Wlan Card

    NOTE: If you ordered a WLAN card with your computer, the card is already installed. NOTE: Dell does not guarantee compatibility or provide support for Mini-Cards from sources other than Dell. Your computer supports two Mini-Card slots: ®  Two Full Mini-Card slot – for WLAN and Bluetooth NOTE: Depending on the configuration of your system, one or more of the Mini-Cards might not be present.

  • Page 29: Replacing The Wlan Card

    9. Install the drivers and utilities for your computer, as required. For more information, see the Dell Technology Guide. NOTE: If you are installing a communication card from a source other than Dell, you must install the appropriate drivers and utilities. For more information, see the Dell Technology Guide.

  • Page 30: Removing The Optical Drive

      CAUTION: 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.   NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

  • Page 31: Removing The Palm Rest

      CAUTION: 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.   NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

  • Page 32: Replacing The Palm Rest

    palmrest screw (2) power/keyboard status light cable touch pad cable display hinge cable  Replacing the Palm Rest   1. Align the palm rest with the computer base and gently snap it into place.   2. Reconnect the power/keyboard device status light, touch pad, and display hinge cables to the respective system board connectors.  ...

  • Page 33: Removing The Speaker

      CAUTION: 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.   NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

  • Page 34: Removing The System Board

      CAUTION: 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.   NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

  • Page 35: Replacing The System Board

      CAUTION: 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.   1. Follow all of the steps in Removing the System Board in reverse order.
  • Page 36 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 Vostro are trademarks of Dell Inc.; Bluetooth is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell under license.

This manual is also suitable for:

860Vostro a860Pp38lPp37l

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