Dell Precision M20 Manuel utilisateur

DellPrecision™M20ServiceManual

Notes, Notices, and Cautions



Information in this document is subject to change without notice.

©2005DellInc.Allrightsreserved.

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

Trademarks used in this text: Dell, the DELL logo, and Dell Precision are trademarks of DellInc.; Intel is a registered trademark of Intel Corporation; Bluetooth is a registered

trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license.

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.

Model PP11L

January2005Rev.A00

Before You Begin

System Components

Hard Drive

Memory Module, Modem, and Devices

Coin-Cell Battery

Mini PCI Card

Internal Card With Bluetooth®Wireless Technology

Center Control Cover

Keyboard

Display Assembly and Display Latch

Palm Rest

Fan

Microprocessor Thermal-Cooling Assembly

Microprocessor Module

Speaker Assembly

Base Latch

System Board

Pin Assignments for I/O Connectors

Flashing the BIOS

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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

Before You Begin

DellPrecision™M20ServiceManual

Preparing to Work Inside the Computer

Recommended Tools

Computer Orientation

Screw Identification

Preparing to Work Inside the Computer

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1. Ensure that the work surface is flat and clean to prevent scratching the computer cover.

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2. Save any work in progress and exit all open programs.

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3. Turn off the computer and all attached devices.

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4. If the computer is connected to a docking device, undock it.

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5. Disconnect the computer from the electrical outlet.

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6. To avoid possible damage to the system board, wait 10 to 20 seconds and then disconnect any attached devices.

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7. Disconnect all other external cables from the computer.

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8. Remove any installed PC Cards from the PC Card slot.

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9. Close the display and turn the computer upside down on a flat work surface.

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10. Slide the battery-bay latch release on the bottom of the computer, and then remove the battery from the bay.

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11. Remove any installed memory modules, Mini PCI cards, and devices, including a second battery if one is installed.

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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. Read and follow applicable instructions in the safety instructions in the Product Information Guide that came with

the computer.

CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of

your computer's electronic components. You can do so by touching an unpainted metal surface.

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 microprocessor by its edges, not by its pins.

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

NOTE: Ensure that the computer is off and not in a power management mode. If you cannot shut down the computer using the computer operating

system, press and hold the power button for 4 seconds.

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

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12. Remove the hard drive.

Recommended Tools

The procedures in this manual require the following tools:

l#1 Phillips screwdriver

l¼-inch flat-blade screwdriver

lSmall plastic scribe

lFlash BIOS update program floppy or CD

Computer Orientation

Screw Identification

When you are removing and replacing components, print "Screw Identification" as a tool to lay out and keep track of the screws. The placemat provides the

number of screws and their sizes.

back

right

front

left

Optional Device:

(1 each)

Hard Drive:

(2 each)

Keyboard:

(2 each)

Display Assembly:

Display Bezel:

Display Panel:

Back to Contents Page

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(4 each)

(6 each)

(4 each)

Display Latch:

(1 each)

Palm Rest:

(2 each at top)

(13 each at bottom)

Fan:

(2 each)

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Speakers:

(2 each—1 on each side)

Modem:

(1 each)



System Board:

(5 each)

Back to Contents Page

Flashing the BIOS

DellPrecision™M20ServiceManual



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

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2. Insert the BIOS update program floppy or CD, and turn on 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.

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3. Press <F2> during POST to enter the system setup program.

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4. Press <Alt> and <F> to reset the computer defaults.

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

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

Back to Contents Page

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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.

Back to Contents Page

Internal Card With Bluetooth®Wireless Technology

DellPrecision™M20ServiceManual

Removing the Internal Card With Bluetooth®Wireless Technology

Installing the Internal Card With Bluetooth®Wireless Technology

Removing the Internal Card With Bluetooth®Wireless Technology

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1. Follow the instructions in "Preparing to Work Inside the Computer."

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2. Remove the battery.

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3. Press down and pull on the tab to open the card door.

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4. Disconnect the card cable connector from the card, and remove the door with the card from the computer.

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5. Holding the card by the card connector, press down the lever, and lift the card off the plastic knob.

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6. Slide the card out of the plastic brackets.

Installing the Internal Card With Bluetooth®Wireless Technology

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1. Slide the card into the plastic brackets on the door, and press the card onto the plastic knob.

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2. Connect the card to the card cable connector, slide the door with the card into the card compartment, and gently press the door into position.

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3. Replace the battery.

CAUTION: Before performing the following procedures, read the safety instructions in your Product Information Guide.

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.

card cable connector

card connector

plastic brackets (2)

internal card with Bluetooth wireless technology

lever

plastic knob

tab on card door

NOTICE: Be careful not to break the plastic when closing the door.

Back to Contents Page

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Back to Contents Page

Coin-Cell Battery

DellPrecision™M20ServiceManual

Removing the Coin-Cell Battery

Installing the Coin-Cell Battery

Removing the Coin-Cell Battery

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1. Follow the instructions in "Preparing to Work Inside the Computer."

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2. Turn the computer over, loosen the captive screw from the modem cover, and remove the cover from the computer.

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3. Disconnect the coin-cell battery cable connector from the battery connector on the system board, and slide the coin-cell battery out of the securing

sleeve.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of

your computer's electronic components. You can do so by touching an unpainted metal surface.

captive screw

modem cover

coin-cell battery

battery connector on

system board

coin-cell battery cable

Installing the Coin-Cell Battery

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1. Connect the coin-cell battery cable connector to the battery connector on the system board.

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2. Slide the battery into the securing sleeve.

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3. Replace the modem cover.

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connector

securing sleeve

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Microprocessor Module

DellPrecision™M20ServiceManual

Removing the Microprocessor Module

Installing the Microprocessor Module

Removing the Microprocessor Module

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1. Follow the instructions in "Preparing to Work Inside the Computer."

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2. Remove the center control cover.

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3. Remove the keyboard.

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4. Remove the display assembly.

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5. Remove the palm rest.

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6. Remove the microprocessor thermal-cooling assembly.

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7. To loosen the ZIF socket, use a small flat-blade screwdriver and rotate the ZIF-socket cam screw counterclockwise until you cannot turn the screw any

further.

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

8. Lift the microprocessor module from the system board.

Installing the Microprocessor Module

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

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.

NOTICE: Do not touch the processor die. Press and hold the microprocessor down on the substrate on which the die is mounted while turning the cam

screw to prevent intermittent contact between the cam screw and microprocessor.

NOTICE: To avoid damage to the microprocessor, hold the screwdriver so that it is perpendicular to the microprocessor when turning the cam screw.

NOTICE: To ensure maximum cooling for the microprocessor, do not touch the heat transfer areas on the microprocessor thermal-cooling assembly. The

oils in your skin reduce the heat transfer capability of the thermal pads.

NOTICE: When removing the microprocessor module, pull the module straight up. Be careful not to bend the pins on the microprocessor module.

microprocessor

ZIF-socket cam screw

ZIF socket

pin-1 corner

NOTE: The ZIF-socket cam screw secures the microprocessor to the system board. Take note of the arrow on the ZIF-socket cam screw.

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