Dell Vostro A90 Manuale utente

Dell™Vostro™A90ServiceManual

Model PP39S

Notes, Notices, and Cautions

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, and Windows XP 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

Before You Begin

Module Cover

Memory Module

Solid-state Drive

Wireless Mini-Card

Keyboard

Palm Rest

Internal Card With Bluetooth®Wireless Technology

Power Button Board

Display

Speaker

Camera

System Board

Microphone

Coin-Cell Battery

Flashing the BIOS

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.

Back to Contents Page

Module Cover

Dell™Vostro™A90ServiceManual

Removing the Module Cover

Replacing the Module Cover



Removing the Module Cover



1. Follow the instructions in Before You Begin.



2. Remove the two screws on the module cover.



3. Lift the cover off the computer at an angle as shown in the figure.

Replacing the Module Cover



1. Align the tabs on the module cover to the bottom of the computer and gently replace the module cover.



2. Replace and tighten the two screws on the module cover.



3. Slide the battery into the battery bay, until it clicks into place.



4. Slide the battery-lock latch to the lock position.

Back to Contents Page



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.

CAUTION: Before performing this procedure, turn off the computer, disconnect the AC adapter from the electrical outlet and the computer,

disconnect the modem from the wall connector and the computer, and remove any other external cables from the computer.

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).

module cover

module cover tab (3)

screw (2)



Back to Contents Page

Before You Begin

Dell™Vostro™A90ServiceManual

Recommended Tools

Turning Off Your Computer

Before Working Inside Your Computer

This section provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the

following conditions exist:

lYou have performed the steps in Turning Off Your Computer and Before Working Inside Your Computer.

lYou have read the safety information that shipped with your computer.

lA component can be replaced or—if purchased separately—installed by performing the removal procedure in reverse order.

Recommended Tools

The procedures in this document may require the following tools:

lSmall flat-blade screwdriver

lPhillips screwdriver

lFlash BIOS update program CD

Turning Off Your Computer



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



2. Shut down the operating system:

Windows®XP:

Click Start®ShutDown®Shut down.

Ubuntu®Dell Desktop:

Click ®Quit ®Shut down.

Ubuntu®Classic Desktop:

Click ®Shut down.



3. 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 until the computer turns off.

Before Working Inside Your Computer

Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your own personal safety.



NOTE: Flash BIOS update program CD ships only in certain countries when you replace the system board.

NOTICE: To avoid losing data, save and close all open files and exit all open programs before you turn off your computer.

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: 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: 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.



1. Ensure that the 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), undock it. See the documentation that came with your docking device for instructions.



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



5. Disconnect all telephone or network cables from the computer.



6. Disconnect your computer and all attached devices from their electrical outlets.



7. Turn the computer over.



8. Slide the battery-bay release latch and the battery-lock latch towards the outer edges.



9. Slide the battery out of the battery bay.



10. Turn the computer top-side up, open the display, and press the power button to ground the system board.

Back to Contents Page



NOTICE: 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.

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

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

NOTICE: To help prevent damage to the system board, you must remove the battery from the battery bay 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.

battery-bay release latch

battery

battery-lock latch



Back to Contents Page

Flashing the BIOS

Dell™Vostro™A90ServiceManual

Flashing the BIOS From a CD

Flashing the BIOS From the Solid-state Drive in Windows®XP

Flashing the BIOS From the Solid-state Drive in Ubuntu®

If a BIOS-update program CD is provided with the new system board, flash the BIOS from the CD. If you do not have a BIOS-update program CD, flash the

BIOS from the solid-state drive.

Flashing the BIOS From a CD



1. Ensure that the AC adapter is plugged in and that the main battery is installed properly.



2. Insert the BIOS-update program CD, and restart the computer.

Follow the instructions that appear on the screen. The computer continues to boot and updates the new BIOS. When the flash update is complete, the

computer will automatically reboot.



3. Press <0> during POST to enter the system setup program.



4. Press <Fn> and <F9> to reset the computer defaults.



5. Press <Esc>, select Save changes and reboot, and press <Enter> to save configuration changes.



6. Remove the flash BIOS-update program CD from the drive and restart the computer.

Flashing the BIOS From the Solid-state Drive in Windows®XP



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.



5. If the Export Compliance Disclaimer window appears, click Yes, I Accept this Agreement.

The File Download window appears.



6. Click Save this program to disk and then click OK.

The Save In window appears.



7. Click the down arrow to view the Save In menu, select Desktop, and then click Save.



8. Click Close if the Download Complete window appears.

The file icon appears on your desktop and is titled the same as the downloaded BIOS update file.



9. Double-click the file icon on the desktop and follow the instructions on the screen.

Flashing the BIOS From the Solid-state Drive in Ubuntu®

NOTE: Your computer may or may not ship with an external optical drive. Use an external optical drive or any external storage device for the procedures

that involve discs.

NOTE: If you use a BIOS-update program CD to flash the BIOS, set up the computer to boot from a CD before inserting the CD.

NOTE: Your computer may or may not ship with an external optical drive. Use an external optical drive or any external storage device for the procedures

that involve discs.



1. Ensure that the AC adapter is plugged in and the main battery is properly installed.



2. Turn on the computer.



3. Click ®Places®Documents.



4. Create a new folder and name it BIOS.



5. Locate the latest BIOS update file for your computer at support.dell.com.



6. Click Download Now to download the file.



7. If the Export Compliance Disclaimer window appears, click Yes, I Accept this Agreement.

The File Download window appears.



8. Click Save this program to disk and then click OK.

The Save In window appears.



9. Click the down arrow to view the Save In menu, select Documents®BIOS, and then click Save.



10. Click Close if the Download Complete window appears.



11. Open the terminal command line application and proceed as follows:

a. Type sudo -s

b. Type your password

c. Type cd Documents

d. Type cd BIOS

e. Type ./a90A00

flash start... string appears.

The computer will restart automatically once the BIOS flash is complete.

Back to Contents Page



NOTE: Your computer may or may not ship with an external optical drive. Use an external optical drive or any external storage device for the procedures

that involve discs.

Back to Contents Page

Internal Card With Bluetooth®Wireless Technology

Dell™Vostro™A90ServiceManual

Removing the Card

Replacing the Card



If you ordered a card with Bluetooth wireless technology with your computer, it is already installed.

Removing the Card



1. Follow the instructions in Before You Begin.



2. Remove the module cover (see Removing the Module Cover).



3. Remove the keyboard (see Removing the Keyboard).



4. Remove the palm rest (see Removing the Palm Rest).



5. Turn the palm rest over.



6. Remove the two screws that secure the card to the palm rest.



7. Lift the card out of the palm rest.

Replacing the Card



1. Insert card into the slot and replace the two screws.



2. Turn the palm rest over.



3. Replace the palm rest (see Replacing the Palm Rest).



4. Replace the keyboard (see Replacing 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).

screw (2)

internal card with Bluetooth wireless technology

cable



5. Replace the module cover (see Replacing the Module Cover).



6. Slide the battery into the battery bay, until it clicks into place and slide the battery-lock latch towards the lock position.

Back to Contents Page



Back to Contents Page

Camera

Dell™Vostro™A90ServiceManual

Removing the Camera

Replacing the Camera



Removing the Camera



1. Follow the instructions in Before You Begin.



2. Remove the module cover (see Removing the Module Cover).



3. Remove the keyboard (see Removing the Keyboard).



4. Remove the palm rest (see Removing the Palm Rest).



5. Remove the display assembly (see Removing the Display Assembly).



6. Remove the display bezel (see Removing the Display Bezel).



7. Disconnect the camera cable from the connector.



8. Remove the camera board.

Replacing the Camera



1. Align the camera board over the slot holes and gently replace it.



2. Reconnect the camera cable to the connector.



3. Replace the display bezel (see Replacing the Display Bezel).



4. Replace the display assembly (see Replacing the Display Assembly).



5. Replace the palm rest (see Replacing the Palm Rest).



6. Replace the keyboard (see Replacing the Keyboard).



7. Replace the module cover (see Replacing the Module Cover).



8. Slide the battery into the battery bay, until it clicks into place and slide the battery-lock latch towards the lock position.

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).

camera

camera cable connector

Back to Contents Page



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