Dell latitude v710, latitudev740 schematic

Dell Latitude V710/V740 Service Manual

Dell™ Latitude™ V710/V740 Service
Manual

Before You Begin

Preparing to Work Inside the Computer
Recommended Tools
Computer Orientation

Screw Identification
System Components
Back-Panel Fan (V740 Only)
Hard Drive
Memory Module, Modem, Optical Drive, and Floppy Drive

Memory Module

Modem

Optical Drive

Floppy Drive
Keyboard
Display Assembly and Display Latch

Display Assembly

Display Latch
EMI Shield, Video Board, and Palm Rest

EMI Shield

Video Board

Palm Rest
Microprocessor Thermal-Cooling Assembly
Microprocessor Module
Flashing the BIOS
Speakers
System Board
Base Plastics
Battery Latch Assembly
Pin Assignments for I/O Connectors

USB Connector

PS/2 Connector

Video Connector

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Dell Latitude V710/V740 Service Manual

Parallel Connector

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.

Trademarks used in this text: Dell, the DELL logo, and Latitude are trademarks of Dell Computer
Corporation; Intel is a registered trademarks of Intel Corporation; Microsoft and Windows are
registered trademarks of Microsoft Corporation.

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

April 2002 Rev. A01

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Before You Begin: Dell Latitude V710/V740 Service Manual

Back to Contents Page

Before You Begin

Dell™ Latitude™ V710/V740 Service Manual

Preparing to Work Inside the Computer
Recommended Tools
Computer Orientation
Screw Identification

Preparing to Work Inside the Computer

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 "Safety and EMC Instructions: Portable Computers" in
the Latitude™ System Information Guide that came with the computer.

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

you begin working inside the computer.

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

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

3. Turn off the computer and all attached devices.

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.

4. Disconnect the computer from the electrical outlet.

5. To avoid possible damage to the system board, wait 10 to 20 seconds and then

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Before You Begin: Dell Latitude V710/V740 Service Manual

disconnect any attached devices.

6. Disconnect all other external cables from the computer.

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

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

NOTICE: To avoid damaging the system board, you must remove the main

battery before you service the computer.

CAUTION: When you remove the battery, ensure that the computer is

upside down on a flat work surface so that the battery does not fall out
of the computer.

9. Remove the battery:

a. Unlock the battery.
b. Slide and hold the battery latch release all the way up until the left edge of

the battery pops up.

c. Remove the battery.

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Before You Begin: Dell Latitude V710/V740 Service Manual

1 battery lock
2 battery latch release
3 battery

10. To dissipate any static electricity while you work, use a wrist grounding strap or
periodically touch an unpainted metal surface.

11. 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.

Recommended Tools

The procedures in this manual require the following tools:

● #1 magnetized Phillips screwdriver

● ¼-inch flat-blade screwdriver

● Nut driver

● Small plastic scribe

● Microprocessor extractor

● Flash BIOS update program floppy disk or CD

Computer Orientation

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Before You Begin: Dell Latitude V710/V740 Service Manual

1 back
2 right
3 front
4 left

Screw Identification

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

of screws and their sizes.

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Before You Begin: Dell Latitude V710/V740 Service Manual

NOTICE: When reinstalling a screw, you must use a screw of the correct

diameter and length. Ensure that the screw is properly aligned with its
corresponding hole, and avoid overtightening.

NOTE: All M2.5 x 4 screws are silver, and all other screws are black.

Back-Panel Fan:

(2 each)

Hard Drive Door:

(1 each)

Memory Module/
Modem Cover:

(1 each)

Modem to System Board:

(2 each)

Optical Drive:

(1 each)

Floppy Drive:

(2 each)

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Before You Begin: Dell Latitude V710/V740 Service Manual

Keyboard Assembly to Hinges:

(2 each)

Keyboard to
Bottom Case:

(4 each; silver screws)

Display Assembly
to Back Panel:

(2 each)

Display-Feed Flex Cable
to System Board:

(2 each)

Hinge Bracket to Bottom Case:

(4 each)

Display Bezel:

(5 each)

Screw Covers (5 each)

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Before You Begin: Dell Latitude V710/V740 Service Manual

Display Panel:

(4 each)

Display-Feed Flex Cable to
Display Assembly:

(1 each)

Display Latch:

(2 each)

EMI Shield:

(3 each)

Top of Palm Rest to
Bottom Case:

(2 each)

Video Board
to Bottom Case:

(1 each)

Palm Rest to
Bottom Case:

(12 each)

Floppy Drive Cage to
Bottom Case:

(2 each)

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Before You Begin: Dell Latitude V710/V740 Service Manual

Hard Drive Cage to
Bottom Case:

(2 each)

System Board to
Bottom Case:

(6 each; silver screws)

Battery Latch Assembly
to Bottom Case:

(1 each)

Back to Contents Page

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System Components: Dell Latitude V710/V740 Service Manual

Back to Contents Page

System Components

Dell™ Latitude™ V710/V740 Service Manual

NOTICE: 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.

NOTICE: Unless otherwise noted, each procedure in this document assumes

that a part can be replaced by performing the removal procedure in reverse
order.

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System Components: Dell Latitude V710/V740 Service Manual

1 display assembly 13 hard drive
2 display-feed flex

cable

14 hard drive cage

3 center control

cover

15 floppy drive cage

4 keyboard 16 floppy drive
5 video board 17 speaker
6 microprocessor 18 modem
7 system board 19 microprocessor thermal-

cooling assembly

8 battery connector

cover

20 headphone/microphone

bridge
9 optical drive 21 palm rest
10 back-panel fan

(V740 only)

22 memory module/modem

cover
11 bottom case 23 EMI shield
12 battery

Back to Contents Page

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System Components: Dell Latitude V710/V740 Service Manual

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Back-Panel Fan (V740 Only): Dell Latitude V710/V740 Service Manual

Back to Contents Page

Back-Panel Fan (V740 Only)

Dell™ Latitude™ V710/V740 Service Manual

Removing the Back-Panel Fan

NOTICE: To prevent data loss, turn off the computer before removing the back-

panel fan. Do not remove the fan while the computer is on or in a power
management mode.

NOTICE: Read "Preparing to Work Inside the Computer" before performing the

following procedure.

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

2. Save and close any open files, exit any open programs, and shut down the
computer.

NOTICE: Disconnect the computer and any attached devices from electrical

outlets, and remove any installed batteries.

NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by

touching an unpainted metal surface on the computer.

3. Turn the computer over. Use a #1 Phillips screwdriver to remove the two M2.5 x
5-mm screws from the fan cover, and place the screws in a safe location.

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1 M2.5 x 5-mm screws (2)
2 fan cover
3 scalloped left edge of

fan cover

4. Use a small flat-blade screwdriver or plastic scribe to lift the scalloped left edge
of the fan cover, and pry the cover loose from the bottom case.

5. Lift the fan cover up and away from the bottom case.

6. Disconnect the fan cable connector from the system board.

7. Lift the fan out of the bottom case.

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Back-Panel Fan (V740 Only): Dell Latitude V710/V740 Service Manual

1 fan
2 fan cable connector

Replacing the Back-Panel Fan

1. Slide the fan into the bottom case.

2. Tuck the fan cable under the bottom case, and connect the cable to the system
board.

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Back-Panel Fan (V740 Only): Dell Latitude V710/V740 Service Manual

1 fan cable

3. Replace the fan cover, and reinstall the two M2.5 x 5-mm screws that secure
the cover to the bottom case.

Back to Contents Page

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Hard Drive: Dell Latitude V710/V740 Service Manual

Back to Contents Page

Hard Drive

Dell™ Latitude™ V710/V740 Service Manual

Removing the Hard Drive

NOTICE: To prevent data loss, turn off the computer before removing the hard

drive. Do not remove the hard drive while the computer is on or in a power
management mode.

NOTICE: Hard drives are extremely fragile; even a slight bump can damage the

drive.

CAUTION: If you remove the hard drive from the computer when the

drive is hot, do not touch the metal housing of the hard drive.

NOTICE: Read "Preparing to Work Inside the Computer" before performing the

following procedure.

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

2. Save and close any open files, exit any open programs, and shut down the
computer.

NOTICE: Disconnect the computer and any attached devices from electrical

outlets, and remove any installed batteries.

NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by

touching an unpainted metal surface on the computer.

3. Turn the computer over. Use a #1 Phillips screwdriver to remove the M2.5 x 5­mm screw from the hard drive door, and place the screw in a safe location.

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Hard Drive: Dell Latitude V710/V740 Service Manual

NOTICE: When the hard drive is not in the computer, store it in protective

antistatic packaging.

1 bottom of computer
2 M2.5 x 5-mm screw
3 hard drive door

4. Lift the hard drive door to release it, and slide the hard drive out of the
computer.

Replacing the Hard Drive

1. Remove the new drive from its packaging.

Save the original packaging to use when storing or shipping the hard drive.

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Hard Drive: Dell Latitude V710/V740 Service Manual

NOTICE: Use firm and even pressure to slide the drive into place. If you force

the hard drive into place using excessive force, you may damage the connector.

2. Slide the hard drive into the bay, and press down on the hard drive door until it
is fully seated.

3. Replace and tighten the M2.5 x 5-mm screw in the hard drive door.

4. Use the Operating System CD to install the operating system for your computer.

5. Use the Drivers and Utilities CD to install the drivers and utilities for your
computer.

Back to Contents Page

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Memory Module, Modem, Optical Drive, and Floppy Drive: Dell Latitude V710/V740 Service Manual

Back to Contents Page

Memory Module, Modem, Optical
Drive, and Floppy Drive

Dell™ Latitude™ V710/V740 Service Manual

Memory Module
Modem
Optical Drive
Floppy Drive

Memory Module

Removing the Memory Module/Modem Cover

NOTE: This procedure covers removing and replacing the memory module

located under the memory module/modem cover on the bottom of the
computer. A second memory module resides on the upper surface of the system
board under the EMI shield. To replace the memory module under the EMI
shield, perform the procedure for

removing the EMI shield. Then replace the

memory module.

NOTICE: Disconnect the computer and any attached devices from electrical

outlets, and remove any installed batteries.

NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by

touching an unpainted metal surface on the computer.

NOTICE: Read "Preparing to Work Inside the Computer" before performing the

following procedure.

1. Turn the computer over, and remove the memory module/modem cover:

a. Remove the M2.5 x 5-mm screw from the memory module/modem cover.

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b. Slide the cover out approximately 10 mm, and lift it away from the

computer.

1 M2.5 x 5-mm screw
2 memory module/modem

cover

NOTICE: To prevent damage to the memory module connector, do not use

tools to spread the inner metal tabs that secure the memory module.

2. If you are replacing a memory module, remove the existing module.

NOTICE: Handle memory modules by their edges, and do not touch the

components on a module.

a. Use your fingertips to carefully spread apart the securing clips on each end

of the memory module connector.

The module should pop up.

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Memory Module, Modem, Optical Drive, and Floppy Drive: Dell Latitude V710/V740 Service Manual

b. Remove the module from the connector.

1 securing clip
2 memory module

3. Ground yourself and install the new memory module:

a. Align the notch in the module with the slot in the center of the connector.
b. Slide the edge of the module firmly into the connector, and rotate the

module down until you hear a click. If you do not hear the click, remove
the module and reinstall it.

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4. Replace the cover and screw:

a. Place the memory module/modem cover over the memory module/modem

compartment so that the end of the cover with the screw hole is lined up
with the lines and arrows on the bottom of the computer.

b. Press down on the center of the memory module/modem cover, and slide

the cover until it is secured.

c. Replace and tighten the M2.5 x 5-mm screw.

NOTICE: If the memory module/modem cover is difficult to close, remove the

module and reinstall it. Forcing the cover to close may damage your computer.

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Memory Module, Modem, Optical Drive, and Floppy Drive: Dell Latitude V710/V740 Service Manual

1 M2.5 x 5-mm screw
2 memory module/modem

cover
3 arrows (2)
4 lines (2)

5. Insert the battery into the battery bay, or connect the AC adapter to your
computer and an electrical outlet.

6. Turn on the computer.

As the computer boots, it detects the additional memory and automatically updates
the system configuration information.

Modem

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CAUTION: Before performing these procedures, turn off the computer,

disconnect it from the electrical outlet, and disconnect the modem from
the telephone wall jack.

NOTICE: Disconnect any attached devices from electrical outlets, and remove

any installed batteries.

NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by

touching an unpainted metal surface on the computer.

NOTICE: Read "Preparing to Work Inside the Computer" before performing the

following procedure.

1. Turn the computer over, and remove the memory module/modem cover:

a. Remove the M2.5 x 5-mm screw from the memory module/modem cover.
b. Slide the cover out approximately 10 mm, and lift it away from the

computer.

1 M2.5 x 5-mm screw
2 memory module/modem

cover

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2. If a modem is not already installed, go to step 3. If you are replacing a modem,
remove the existing modem:

a. Remove the two M2 x 3-mm screws that secure the modem to the system

board, and set them aside.

b. Pull the modem straight up by the pull tab to lift the modem out of its

connector, and disconnect the modem cable.

1 M2 x 3-mm screws (2)
2 pull tab
3 modem cable connector
4 modem cable

3. Connect the modem cable to the new modem.

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NOTICE: The cable connectors are keyed for correct insertion; do not force the

connections.

4. Align the modem with the screw holes and press the modem into its connector
on the system board.

Install the two M2 x 3-mm screws to secure the modem to the system board.

5. Replace the memory module/modem cover and screw:

a. Place the memory module/modem cover over the memory module/modem

compartment so that the end of the cover with the screw hole is lined up
with the lines and arrows on the bottom of the computer.

b. Press down on the center of the memory module/modem cover, and slide

the cover until it is secured.

c. Replace and tighten the M2.5 x 5-mm screw.

NOTICE: Replace the memory module/modem cover so that it is seated

properly around the edges and does not bulge near the center of the cover.
Tightening the memory-module/modem cover screw when the cover is
improperly seated can damage your computer.

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1 M2.5 x 5-mm screw
2 memory module/modem

cover
3 arrows (2)
4 lines (2)

Optical Drive

Removing an Installed Optical Drive

NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by

touching an unpainted metal surface on the computer.

NOTICE: Read "Preparing to Work Inside the Computer" before performing the

following procedure.

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