Dell Personal Computer 3100 Users Manual Dimension 3100/E310 Service

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Dell™ Dimension™ 3100/E310 Service Manual
Before You Begin
Removing the Computer Cover
About Your Dell™ Dimension™ 3100/E310 Computer
Advanced Troubleshooting
Removing and Installing Parts
Replacing the Computer Cover
Specifications
Technical Overview
System Setup

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.

Abbreviations and Acronyms
For a complete list of abbreviations and acronyms, see the Dell Dimension Help file.
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.
© 2004–2006 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, Inspiron, Dell Precision, Dimension, OptiPlex, Latitude, PowerEdge, PowerVault, PowerApp, DellNet, and PowerConnect are trademarks of
Dell Inc.; Intel and Pentium are registered trademarks of Intel Corporation; Microsoft, Windows, and Outlook 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 Inc. disclaims any
proprietary interest in trademarks and trade names other than its own.
Model DCSM
August 2006 Rev. A01

Back to Contents Page

About Your Dell™ Dimension™ 3100/E310 Computer
Dell™ Dimension™ 3100/E310 Service Manual
Front View of Computer
Back View of Computer

Front View of Computer

cover latch
release

Use this latch to remove the cover.

CD or DVD
activity light

The drive light is on when the computer reads data from the CD or DVD drive.

CD or DVD eject
button

Press to eject a disk from the CD or DVD drive.

FlexBay drive

Can contain an optional floppy drive or optional Media Card Reader.

USB 2.0
connectors (2)

Use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras. It is recommended that you use
the back USB connectors for devices that typically remain connected, such as printers and keyboards.

hard-drive
activity light

The hard-drive activity light is on when the computer reads data from or writes data to the hard drive. The light might also be on
when a device such as a CD player is operating.

vents

For adequate cooling, do not block any of the vents.

NOTICE: Ensure that there is a minimum of two inches of space between all vents and any object near these vents.
NOTICE: Keep the vent area clean and dust-free to ensure that the system is adequately ventilated. Use only a dry cloth to clean
the vent area to avoid water damage to the system.

power button

Press to turn on the computer.
NOTICE: To avoid losing data, do not use the power button to turn off the computer. Instead, perform an operating system
shutdown.

headphone
connector

10 diagnostic lights

Use the headphone connector to attach headphones and most kinds of speakers.
Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see "Diagnostic

(4)

Lights."

11 Service Tag

Used to identify your computer when you access the Dell Support website or call technical support.

Back View of Computer

1 power
connector

Insert the power cable.

2 sound card
connectors
(3)

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3 USB 2.0
connectors
(4)

Line-in connector — Use the blue line-in connector to attach a
record/playback device such as a cassette player, CD player, or VCR.
Line-out connector — Use the green line-out connector to attach
headphones and most speakers with integrated amplifiers.
Microphone connector — Use the pink microphone connector to
attach a personal computer microphone for voice or musical input
into a sound or telephony program.

Use the back USB connectors for devices that typically remain connected,
such as printers and keyboards.
It is recommended that you use the front USB connectors for devices that
you connect occasionally, such as joysticks or cameras.

4 network
adapter
connector

To attach your computer to a network or broadband device, connect one
end of a network cable to either a network jack or your network or
broadband device. Connect the other end of the network cable to the
network adapter connector on your computer. A click indicates that the
network cable has been securely attached.
NOTE: Do not plug a telephone cable into the network connector.
On computers with a network connector card, use the connector on the
card.
It is recommended that you use Category 5 wiring and connectors for your
network. If you must use Category 3 wiring, force the network speed to
10 Mbps to ensure reliable operation.

5 VGA video
connector

If your monitor has a VGA connector, plug it into the VGA connector on the
computer.

6 card slots

Access connectors for any installed PCI cards (two slots) and a x1 PCI
Express card.
NOTE: Although your computer has 4 card slot openings, it supports a
maximum of 3 cards; the bottom slot cannot be used.

Back to Contents Page

Advanced Troubleshooting
Dell™ Dimension™ 3100/E310 Service Manual
Dell Diagnostics
System Lights
Diagnostic Lights
Beep Codes

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

When to Use the Dell Diagnostics
If you experience a problem with your computer, perform the checks in this section and run the Dell Diagnostics before you contact Dell for technical
assistance.
It is recommended that you print these procedures before you begin.
NOTICE: The Dell Diagnostics works only on Dell™ computers.
NOTE: The ResourceCD is optional and may not ship with your computer.

Start the Dell Diagnostics from either your hard drive or from the Dell Dimension ResourceCD.

Starting the Dell Diagnostics From Your Hard Drive
1.

Turn on (or restart) your computer.
a.

When the DELL™ logo appears, press immediately. Select Diagnostics from the boot menu and press .
NOTE: If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft® Windows® desktop. Then shut
down your computer and try again.

Press and hold the key while powering the computer on.
NOTE: If you see a message stating that no diagnostics utility partition has been found, run the Dell Diagnostics from the ResourceCD.

Starting the Dell Diagnostics From the ResourceCD
1.

Insert the ResourceCD.

Shut down and restart the computer.
When the DELL logo appears, press immediately.
If you wait too long and the Windows logo appears, continue to wait until you see the Windows desktop. Then shut down your computer and try again.
NOTE: The next steps change the boot sequence for one time only. On the next start-up, the computer boots according to the devices specified in
system setup.

When the boot device list appears, highlight IDE CD-ROM Device and press .

Select the Boot from CD-ROM option from the menu that appears and press .

Type 1 to start the ResourceCD menu and press to proceed.

Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed, select the version appropriate for your computer.

When the Dell Diagnostics Main Menu appears, select the test you want to run.

Dell Diagnostics Main Menu
1.

After the Dell Diagnostics loads and the Main Menu screen appears, click the button for the option you want.

Option

Function

Express Test Performs a quick test of devices. This test typically takes 10 to 20 minutes and requires no interaction on your part. Run Express Test first to
increase the possibility of tracing the problem quickly.
Extended
Test

Performs a thorough check of devices. This test typically takes 1 hour or more and requires you to answer questions periodically.

Custom Test

Tests a specific device. You can customize the tests you want to run.

Symptom
Tree

Lists the most common symptoms encountered and allows you to select a test based on the symptom of the problem you are having.

If a problem is encountered during a test, a message appears with an error code and a description of the problem. Write down the error code and
problem description and follow the instructions on the screen.
If you cannot resolve the error condition, contact Dell.
NOTE: The Service Tag for your computer is located at the top of each test screen. If you contact Dell, technical support will ask for your Service
Tag.

If you run a test from the Custom Test or Symptom Tree option, click the applicable tab described in the following table for more information.

Tab

Function

Results

Displays the results of the test and any error conditions encountered.

Errors

Displays error conditions encountered, error codes, and the problem description.

Help

Describes the test and may indicate requirements for running the test.

Configuration Displays your hardware configuration for the selected device.
The Dell Diagnostics obtains configuration information for all devices from system setup, memory, and various internal tests, and it displays
the information in the device list in the left pane of the screen. The device list may not display the names of all the components installed on
your computer or all devices attached to your computer.
Parameters

Allows you to customize the test by changing the test settings.

When the tests are completed, if you are running the Dell Diagnostics from the ResourceCD, remove the CD.

Close the test screen to return to the Main Menu screen. To exit the Dell Diagnostics and restart the computer, close the Main Menu screen.

System Lights
Your power button light and hard-drive light may indicate a computer problem.

Power Light

Problem Description

Suggested Resolution

Solid green

Power is on, and the computer is operating normally. On
the desktop computer, a solid green light indicates a
network connection.

No corrective action is required.

Blinking green

The computer is in the suspended state (Microsoft®
Windows® 2000 and Windows XP).

Press the power button, move the mouse, or press a key
on the keyboard to wake the computer.

Blinks green several times and then
turns off

A configuration error exists.

Check the diagnostic lights to see if the specific problem is
identified.

Solid yellow

The Dell Diagnostics is running a test, or a device on the
system board may be faulty or incorrectly installed.

If the Dell Diagnostics is running, allow the testing to
complete.
Check the diagnostic lights to see if the specific problem is
identified.
If the computer does not boot, contact Dell for technical
assistance.

Blinking yellow

A power supply or system board failure has occurred.

Check the diagnostic lights to see if the specific problem is
identified.

Solid green and a beep code during
POST

A problem was detected while the BIOS was executing.

See "Beep Codes" for instructions on diagnosing the beep
code. Also, check the diagnostic lights to see if the specific
problem is identified.

Solid green power light and no beep The monitor or the graphics card may be faulty or
code and no video during POST
incorrectly installed.

Check the diagnostic lights to see if the specific problem is
identified. See "Video and Monitor Problems" in your

Owner's Manual.
Solid green power light and no beep An integrated system board device may be faulty.
code but the computer locks up
during POST

Check the diagnostic lights to see if the specific problem is
identified. If the problem is not identified, contact Dell for
technical assistance.

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

Your computer has four lights labeled "1," "2," "3," and "4" on the front panel to help you troubleshoot problems. When the computer starts normally, the
lights flash. After the computer starts successfully, all four lights turn off. If the computer malfunctions, the color and sequence of the lights identify the
problem.

Light Pattern

Problem Description

Suggested Resolution

The computer is in a normal "off" condition or a possible
pre-BIOS failure has occurred.

Plug the computer into a working electrical outlet. Also see "Power Problems" in
your Owner's Manual.

The diagnostic lights turn off after the system
successfully boots to the operating system.
NOTE: If all of the diagnostic lights are off and the
system does not start, there may be a problem with the
power supply or with the processor.
A processor failure was detected.

Memory modules are detected, but a memory failure has
occurred.

Contact Dell for technical assistance.

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If you have two or more memory modules installed, remove the
modules, reinstall one module (see "Memory"), and then restart the
computer. If the computer starts normally, reinstall an additional module.
Continue until you have identified a faulty module or reinstalled all
modules without error.
If available, install properly working memory of the same type into your
computer (see "Memory").
If the problem persists, contact Dell for technical assistance.

A possible graphics failure has occurred.

If the problem persists, contact Dell for technical assistance.

A possible floppy drive or hard drive failure has occurred.

Reseat all power and data cables and restart the computer.

A possible USB failure has occurred.

Reinstall all USB devices, check cable connections, and then restart the
computer.

No memory modules are detected.

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Memory modules are detected, but a memory
configuration or compatibility error exists.

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A possible expansion card failure has occurred.

1.
2.
3.

Another failure has occurred.

Ensure that no special memory module/memory connector placement
requirements exist (see "DDR2 Memory Overview").
Verify that the memory modules that you are installing are compatible
with your computer (see "DDR2 Memory Overview").
If the problem persists, contact Dell for technical assistance.

Determine whether a conflict exists by removing a card and restarting
the computer (see "Cards").
If the problem persists, reinstall the card that you removed, remove a
different card, and then restart the computer.
Repeat this process for each card. If the computer starts normally,
troubleshoot the last card removed from the computer for resource
conflicts (see "Resolving Software and Hardware Compatibilities" in your
computer Owner's Manual).
If the problem persists, contact Dell for technical assistance.

Ensure that the cables are properly connected to the system board from
the hard drive, CD drive, and DVD drive (see "System Board
Components").
If there is an error message on your screen identifying a problem with a
device (such as the floppy drive or hard drive), check the device to
ensure that it is functioning properly.
The operating system is attempting to boot from a device (such as the

floppy drive or hard drive); check system setup (see "System Setup") to
make sure the boot sequence is correct for the devices installed on your
computer.
If the problem persists, contact Dell for technical assistance.

During normal operation, all of the diagnostic lights turn
on and then turn off before the system starts.

If the system does not start, plug the computer into a working electrical outlet.
Also see "Power Problems" in your Owner's Manual.

If all four diagnostic lights stay on and the power button
remains amber, a possible processor power or
connection error has occurred.

Unplug the power supply and check the 4-pin processor power cable
connection (see "System Board Components").
Reseat the processor (see "Processor").

NOTE: If all of the diagnostic lights turn on then off and
the system does not start, there may be a problem with
the power supply or with the processor. For other
possible solutions, see "Power Problems" in your
Owner's Manual.

If there are no power problems and the system does not start, contact Dell for
technical assistance.

Beep Codes
Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies
a problem. One possible beep code (code 1-3-1) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer
encountered a memory problem.
If your computer beeps during start-up:

Write down the beep codes.

Run the Dell Diagnostics to identify a more serious cause.

Contact Dell for technical assistance.

Code

Cause

1-1-2

Microprocessor register failure

1-1-3

NVRAM read/write failure

1-1-4

ROM BIOS checksum failure

1-2-1

Programmable interval timer failure

1-2-2

DMA initialization failure

1-2-3

DMA page register read/write failure

1-3

Video Memory Test failure

1-3-1 through 2-4-4 Memory not being properly identified or used
3-1-1

Slave DMA register failure

3-1-2

Master DMA register failure

3-1-3

Master interrupt mask register failure

3-1-4

Slave interrupt mask register failure

3-2-2

Interrupt vector loading failure

3-2-4

Keyboard Controller Test failure

3-3-1

NVRAM power loss

3-3-2

Invalid NVRAM configuration

3-3-4

Video Memory Test failure

3-4-1

Screen initialization failure

3-4-2

Screen retrace failure

3-4-3

Search for video ROM failure

4-2-1

No timer tick

4-2-2

Shutdown failure

4-2-3

Gate A20 failure

4-2-4

Unexpected interrupt in protected mode

4-3-1

Memory failure above address 0FFFFh

4-3-3

Timer-chip counter 2 failure

4-3-4

Time-of-day clock stopped

4-4-1

Serial or parallel port test failure

4-4-2

Failure to decompress code to shadowed memory

4-4-3

Math-coprocessor test failure

4-4-4

Cache test failure

Back to Contents Page

Before You Begin
Dell™ Dimension™ 3100/E310 Service Manual
Getting Started
Recommended Tools
Turning Off Your Computer
Before Working Inside Your Computer

Getting Started
This section provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the
following conditions exist:
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You have performed the steps in "Turning Off Your Computer" and "Before Working Inside Your Computer."

You have read the safety information in your Dell™ Product Information Guide.

A component can be replaced by performing the removal procedure in reverse order.

Recommended Tools
The procedures in this document may require the following tools:
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Small flat-blade screwdriver

Phillips screwdriver

Flash BIOS update program floppy disk or CD

Turning Off Your Computer
NOTICE: To avoid losing data, save and close any open files and exit any open programs before you turn off your computer.

Shut down the operating system:
a.

Save and close any open files, exit any open programs, click the Start button, and then click Turn Off Computer.

In the Turn off computer window, click Turn off.
The computer turns off after the operating system shutdown process finishes.

Ensure that the computer and any 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 4 seconds.

Before Working Inside Your Computer
Use the following safety guidelines to help protect your computer from potential damage and to help ensure your own personal safety.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
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.
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: When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a connector 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.

Turn off your computer.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.

Disconnect any telephone or telecommunication lines from the computer.

Disconnect your computer and all attached devices from their electrical outlets, and then 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 cover.

Open the computer cover.
NOTICE: 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 any static electricity that could harm internal components.

Back to Contents Page

Replacing the Computer Cover
Dell™ Dimension™ 3100/E310 Service Manual

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

Ensure that all cables are connected and fold cables out of the way.
Gently pull the power cables toward you so that they do not get caught underneath the drives.

Ensure that no tools or extra parts are left inside the computer.

Align the bottom of the cover with the tabs located along the bottom edge of the computer.

Using the tabs as leverage, rotate the cover downward and close.

Snap the cover into place by pulling back on the cover latch release, and then releasing the latch release when the cover is seated.

Ensure that the cover is seated correctly before moving it to the upright position.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

Connect your computer and devices to electrical outlets, and turn them on.

Back to Contents Page

Removing the Computer Cover
Dell™ Dimension™ 3100/E310 Service Manual

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.

Follow the procedures in "Before You Begin."
NOTICE: Ensure that sufficient space exists to support the removed cover—at least 30 cm (1 ft) of desktop space.
NOTICE: Ensure that you are working on a level, protected surface to avoid scratching either the computer or the surface on which it is resting.

Lay your computer on its side with the computer cover facing up.

Pull back the cover latch release on the top panel.

Locate the three hinge tabs on the bottom edge of the computer.

Grip the sides of the computer cover and pivot the cover up, using the bottom hinges as leverage points.

Release the cover from the hinge tabs and set it aside in a secure location.

Back to Contents Page

Removing and Installing Parts
Dell™ Dimension™ 3100/E310 Service Manual
Memory

Media Card Reader

Cards

CD/DVD Drive

Drive Panels

Processor

Drives

System Board

Hard Drive

Power Supply

Floppy Drive

Battery

Memory

DDR2 Memory Overview
If your computer only has one memory module installed on the system board, you can increase your computer memory by installing an additional memory
module.
Your computer supports DDR2 memory. For additional information on the type of memory supported by your computer, see "Specifications."

NOTE: Always install DDR2 memory modules in the order indicated on the system board.
NOTICE: Do not install ECC or buffered memory modules. Only unbuffered, non-ECC memory is supported.

If you install mixed pairs of DDR2 400-MHz (PC2-3200) and DDR2 533-MHz (PC2-4300) memory, the modules function at the slowest speed installed.

Be sure to install a single memory module in DIMM connector 1, the connector closest to the processor, before you install modules in the other
connectors.

NOTE: Memory purchased from Dell is covered under your computer warranty.
NOTICE: If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that
you may have, even if you purchased the new modules from Dell. If possible, do not pair an original memory module with a new memory module.
Otherwise, your computer may not start properly.

Installing Memory
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: 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 on the computer chassis.

Follow the procedures in "Before You Begin."

Press out the securing clip at each end of the memory module connector.

1 memory connector closest to processor
2 securing clips (2)
3 connector

Align the notch on the bottom of the module with the crossbar in the connector.

1 cutouts (2)
2 memory module
3 notch
4 crossbar

NOTICE: To avoid damage to the memory module, press the module straight down into the connector while applying equal force to each end of the
module.

Insert the module into the connector until the module snaps into position.
If you insert the module correctly, the securing clips snap into the cutouts at each end of the module.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

Connect your computer and devices to electrical outlets, and turn them on.

When a message appears stating that memory size has changed, press to continue.

Log on to your computer.

Right-click the My Computer icon and click Properties.

10.

Click the General tab.

11.

To verify that the memory is installed correctly, check the amount of memory (RAM) listed.

Removing Memory
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: 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 on the computer chassis.

Follow the procedures in "Before You Begin."

Press out the securing clip at each end of the memory module connector.

Grasp the module and pull up.
If the module is difficult to remove, gently ease the module back and forth to remove it from the connector.

Replace the computer cover.

Cards
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: 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 on the computer chassis.
Your Dell™ computer provides the following slots for PCI and PCI Express cards:
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Two PCI card slots

One PCI Express x1 card slot

1 PCI card

1 PCI Express x1 card
2 PCI Express x1 card slot
If you are installing or replacing an expansion card, follow the procedures in the next section. If you are removing but not replacing an expansion card, see
"Removing an Expansion Card."
If you are replacing a card, uninstall the current driver for that card.

Installing an Expansion Card
1.

Follow the procedures in "Before You Begin."

1 filler bracket
2 alignment guide
3 alignment bar
4 card retention door
5 release tab

Gently push the release tab on the inside of the card retention door to pivot the door open. Because the door is captive, it will remain in the open
position.

If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue with step 5.

If you are replacing a card that is already installed in the computer, remove the card.
If necessary, disconnect any cables connected to the card. Grasp the card by its top corners, and ease it out of its connector.

Prepare the card for installation.
See the documentation that came with the card for information on configuring the card, making internal connections, or otherwise customizing it for your
computer.
CAUTION: Some network adapters automatically start the computer when they are connected to a network. To guard against electrical shock, be
sure to unplug your computer from its electrical outlet before installing any cards.

Place the card in the connector and press down firmly. Ensure that the card is fully seated in the slot.

1 alignment bar
2 alignment guide
3 fully seated card
4 not fully seated card
5 bracket within slot
6 bracket caught outside of slot

Before you close the card retention door, ensure that:
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The tops of all cards and filler brackets are flush with the alignment bar.

The notch in the top of the card or filler bracket fits around the alignment guide.

1 card retention door
2 release tab

Close the card retention door by snapping it into place.
NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly or
cause damage to the equipment.

Connect any cables that should be attached to the card.
See the documentation for the card for information about the card's cable connections.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

10.

Replace the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.

11.

If you installed a sound card:

12.

13.

Enter system setup, select Audio Controller, and then change the setting to Off.

Connect external audio devices to the sound card's connectors. Do not connect external audio devices to the microphone, speaker/headphone,
or line-in connectors on the back panel.

If you installed an add-in network adapter and want to disable the integrated network adapter:
a.

Enter system setup, select Network Controller, and then change the setting to Off.

Connect the network cable to the add-in network adapter's connectors. Do not connect the network cable to the integrated connector on the
back panel.

Install any drivers required for the card as described in the card documentation.

Removing an Expansion Card
1.

Follow the procedures in "Before You Begin."
Gently push the release tab on the card retention door from the inside to pivot the door open. Because the door is captive, it will remain in the open
position.
If you are removing the card permanently, install a filler bracket in the empty card-slot opening.
NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust
and dirt out of your computer.

Close the card retention door by snapping it into place to secure the cards.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

Replace the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.

Uninstall the driver for the card that you removed.

If you removed a sound card:

Enter system setup, select Audio Controller, and then change the setting to On.

Connect external audio devices to the audio connectors on the back panel of the computer.

If you removed an add-in network connector:
a.

Enter system setup, select Network Controller, and then change the setting to On.

Connect the network cable to the integrated connector on the back panel of the computer.

Drive Panels
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.

Removing the Drive Panel
1.

Follow the procedures in "Before You Begin."

1 drive panel
2 sliding plate
3 sliding plate lever

Grasp the sliding plate lever and push it towards the base of the computer until the drive panel snaps open.
NOTE: This sliding plate secures and releases the drive panel and helps to secure the drives.

Pivot the drive panel outward and lift it from its side hinges.

Set the drive panel aside in a secure location.

Removing the Drive-Panel Insert

Removing the Optical Drive-Panel Insert

1 drive-panel insert
2 drive panel
3 drive panel-insert latch

Remove the drive panel.

Press the drive-panel insert latch inwards to unlatch it from the drive panel.

Pivot the drive-panel insert out and away from the drive panel.

Set the drive-panel insert aside in a secure location.

Removing the FlexBay Drive-Panel Insert

1 drive-panel tab
2 drive-panel insert

Remove the drive panel.
Press the drive-panel tab outwards to unlatch it from the drive-panel insert; rotate the drive-panel insert out while maintaining pressure upon the drivepanel tab.
Set the drive-panel insert aside in a secure location.

Replacing the FlexBay or Optical Drive-Panel Insert

1 center drive-panel tab
2 drive-panel insert tab
3 drive panel
4 drive-panel insert latch
5 drive-panel insert

Slide the drive-panel insert tab under the center drive-panel tab.

Rotate the drive-panel insert into place and snap the drive-panel insert latch into place against the corresponding tab on the drive panel.

Replacing the Drive Panel
1.

Follow the procedures in "Before You Begin."

1 drive panel
2 sliding plate
3 sliding plate lever

Align the drive panel tabs with the side-door hinges.

Rotate the drive panel toward the computer until it snaps into place on the front panel.

Grasp the sliding plate lever and pull it towards the top of the computer, snapping it into the closed position to secure the drive panel.

Drives

Your computer supports a combination of these devices:
l

Up to two serial ATA hard drives

One FlexBay drive (floppy drive or Media Card Reader)

Up to two CD or DVD drives

1 bay for second hard drive (optional)
2 hard drive
3 FlexBay for optional floppy drive or Media Card Reader
4 CD/DVD drive(s)
Connect CD/DVD drives to the connector labeled "IDE" on the system board. Serial ATA hard drives should be connected to the connectors labeled "SATA0" or
"SATA1" on the system board.

IDE Drive Addressing
When you connect two IDE devices to a single IDE interface cable and configure them for the cable select setting, the device attached to the last connector on
the interface cable is the master or boot device (drive 0), and the device attached to the middle connector on the interface cable is the slave device (drive 1).
See the drive documentation in your upgrade kit for information on configuring devices for the cable select setting.

Connecting Drive Cables
When you install a drive, you connect two cables—a DC power cable and a data cable—to the back of the drive and to the system board.

Drive Interface Connectors
Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the other
connector. Keyed connectors ensure that the pin-1 wire in the cable (indicated by the colored stripe along one edge of the IDE cable—serial ATA cables do not
use a colored stripe) goes to the pin-1 end of the connector. The pin-1 end of a connector on a board or a card is usually indicated by a silk-screened "1"
printed directly on the board or card.
NOTICE: When you connect an IDE interface cable, do not place the colored stripe away from pin 1 of the connector. Reversing the cable prevents the
drive from operating and could damage the controller, the drive, or both.

1 interface cable
2 interface connector

Power Cable Connector
To connect a drive using the power cable, locate the power input connector on the system board.

1 power input connector
2 power cable

Connecting and Disconnecting Drive Cables
When removing an IDE drive data cable, grasp the colored pull tab and pull until the connector detaches.
When connecting and disconnecting a serial ATA data cable, hold the cable by the black connector at each end.
Like IDE connectors, the serial ATA interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a
filled-in hole on the other connector.

Hard Drive
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently
cushion it.
NOTICE: If you are replacing a hard drive that contains data you want to keep, back up your files before you begin this procedure.

Check the documentation for the drive to verify that it is configured for your computer.

Removing a Hard Drive
1.

Follow the procedures in "Before You Begin."

Disconnect the power and hard-drive cables from the drive.

1 serial ATA data cable
2 power cable

Press the blue tabs on each side of the drive towards each other and slide the drive up and out of the computer.

1 tabs (2)
2 hard drive

Installing a Hard Drive
1.

Unpack the replacement hard drive, and prepare it for installation.

Check the documentation for the drive to verify that it is configured for your computer.
NOTE: If your replacement hard drive does not have the plastic guide bracket attached, remove the bracket from the old drive by unsnapping it from the
drive. Snap the bracket onto the new drive.

1 drive
2 bracket rails (2)

Gently slide the drive into place until you hear a click or feel the drive securely installed.

Connect the power and hard-drive cables to the drive.

Check all connectors to ensure that they are properly cabled and firmly seated.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug the cable into the computer.

Connect your computer and devices to electrical outlets, and turn them on.
See the documentation that came with the drive for instructions on installing any software required for drive operation.

Adding a Second Hard Drive (optional)
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently
cushion it.

Check the documentation for the drive to verify that it is configured for your computer.

Follow the procedures in "Before You Begin."

Remove the plastic guide bracket from the inside of the hard-drive bay by gently pulling the bracket up and out of the bay.

Snap the bracket to the hard drive.

Gently slide the new drive (second hard drive) into place until you hear a click or feel the drive securely installed.

1 primary hard drive in upper bay
2 secondary hard drive in lower bay
3 rail tabs (2)
4 hard drive bay

Connect a power cable to the drive.

Connect the data cable to the drive and to the system board.

Check all connectors to ensure that they are properly cabled and firmly seated.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug the cable into the computer.

10.

Connect your computer and devices to electrical outlets, and turn them on.
See the documentation that came with the drive for instructions on installing any software required for drive operation.

Floppy Drive
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
NOTE: If you are adding a floppy drive, see "Installing a Floppy Drive."

Removing a Floppy Drive
1.

Follow the procedures in "Before You Begin."

Remove the drive panel.

1 power cable
2 data cable

Disconnect the power and data cables from the back of the floppy drive.

Grasp the sliding plate lever and push it towards the base of the computer; then, hold it in place while you slide the drive from the computer.

1 sliding plate lever
2 sliding plate
3 floppy drive

Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.

Replace the drive panel.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

Connect your computer and devices to their electrical outlets, and turn them on.

Installing a Floppy Drive
NOTE: In the event that the replacement or new floppy drive does not have shoulder screws, use the screws located within the drive-panel insert.

1 drive
2 screws (4)

Follow the procedures in "Before You Begin."

Remove the drive panel.

If you are installing a new floppy drive rather than replacing a drive, remove the drive-panel insert from the FlexBay, and then attach the shoulder
screws located in the back of the drive-panel insert to the drive.
Gently slide the drive into place until you hear a click or feel the drive securely installed.

Attach the power and data cables to the floppy drive.

Connect the other end of the data cable to the connector labeled "FLOPPY" on the system board and route the cable through the clip on the shroud.

1 FlexBay
2 power cable
3 data cable

Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.

Replace the drive panel.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

10.

Connect your computer and devices to their electrical outlets, and turn them on.
See the documentation that came with the drive for instructions on installing any software required for drive operation.

11.

Enter system setup and select the appropriate Diskette Drive option.

12.

Verify that your computer works correctly by running the Dell Diagnostics.

Media Card Reader

Removing a Media Card Reader
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: 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 on the computer chassis.

Follow the procedures in "Before You Begin."

Remove the drive panel.

1 cables
2 Media Card Reader (not present on all computers)

Disconnect the USB cable on the back of the Media Card Reader from the FlexBay USB connector on the system board and route the cable through the
clip on the shroud.

1 sliding plate lever
2 sliding plate
3 Media Card Reader

Grasp the sliding plate lever and push it towards the base of the computer; then, hold it in place while you slide the Media Card Reader from the
computer.

Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.

Replace the drive panel.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

Connect your computer and devices to their electrical outlets, and turn them on.

Installing a Media Card Reader
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: 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 on the computer chassis.

Follow the procedures in "Before You Begin."

1 Media Card Reader
2 screws (3)

Remove the drive panel.

Remove the Media Card Reader and bracket from its packaging.

If you are installing a new Media Card Reader rather than replacing one, remove the drive-panel insert from the FlexBay, and then attach the shoulder
screws located in the back of the drive-panel insert to the Media Card Reader.

Gently slide the drive (which should not yet be connected to the FlexBay cable) into place until you hear a click or feel the drive securely installed.

Connect the USB cable on the back of the Media Card Reader to the front panel USB connector on the system board.

Connect the FlexBay USB cable to the back of the Media Card Reader.

1 Media Card Reader
2 FlexBay cables

Route the USB cable through the cable routing clip.

Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.

10.

Replace the drive panel.

11.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

12.

Connect your computer and devices to their electrical outlets, and turn them on.

CD/DVD Drive
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.

Removing a CD/DVD Drive
1.

Follow the procedures in "Before You Begin."

Remove the drive panel.

Disconnect the power and data cables from the back of the drive.

1 data cable
2 power cable

Grasp the sliding plate lever and push it towards the base of the computer; then, hold it in place while you slide the CD/DVD drive from the computer.

1 sliding plate lever
2 sliding plate
3 CD/DVD drive

Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.

Replace the drive panel.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

Connect your computer and devices to their electrical outlets, and turn them on.

Installing a CD/DVD Drive
1.

Follow the procedures in "Before You Begin."
If you are installing a new CD/DVD drive rather than replacing a drive, remove the optical drive-panel insert
and then attach the shoulder screws located in the back of the drive-panel insert to the drive.
Gently slide the drive into place until you hear a click or feel the drive securely installed.

1 drive
2 screws (3)

Connect the power and data cables to the drive.

1 data cable
2 power cable

Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.

Replace the computer cover.

Replace the drive panel.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

10.

Enter system setup and select the appropriate Drive option.
Verify that your computer works correctly by running the Dell Diagnostics.

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

Removing the Processor
1.

Follow the procedures in "Before You Begin."
NOTE: To loosen the two captive screws on each side of the heat sink and fan shroud assembly, you need a long Phillips screwdriver.

Loosen the two captive screws on each side of the heat sink assembly.
CAUTION: Despite having a plastic shield, the heat sink assembly may be very hot during normal operation. Be sure that it has had sufficient time
to cool before you touch it.

Rotate the heat sink and fan shroud assembly upward, and remove it from the computer.

1 heat sink and fan shroud assembly
2 captive screw housings (2)

NOTICE: If you are installing a processor upgrade kit from Dell, discard the original heat sink. If you are not installing a processor upgrade kit from Dell,
reuse the original heat sink when you install your new processor.

Open the processor cover by sliding the release lever out from beneath the center cover latch on the socket. Then, pull the lever back to release the
processor.

1 processor cover
2 processor
3 socket
4 center cover latch
5 release lever

NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.

Gently remove the processor from the socket.
Leave the release lever extended in the release position so that the socket is ready for the new processor.

Installing the Processor
NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer.
NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.

Unpack the new processor, being careful not to touch the underside of the processor.
NOTICE: You must position the processor correctly in the socket to avoid permanent damage to the processor and the computer when you turn on the
computer.

If the release lever on the socket is not fully extended, move it to that position.

Orient the front and rear alignment notches on the processor with the front and rear alignment notches on the socket.

Align the pin-1 corners of the processor and socket.

1 processor cover

6 release lever

2 tab

7 front alignment notch

3 processor

8 socket and processor pin-1 indicator

4 processor socket

9 rear alignment notch

5 center cover latch

NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor.

Set the processor lightly in the socket and ensure that the processor is positioned correctly.

When the processor is fully seated in the socket, close the processor cover.
Ensure that the tab on the processor cover is positioned underneath the center cover latch on the socket.

Pivot the socket release lever back toward the socket and snap it into place to secure the processor.
NOTICE: If you are not installing a processor upgrade kit from Dell, reuse the original heat sink assembly when you replace the processor.

If you installed a processor replacement kit from Dell, return the original heat sink assembly and processor to Dell in the same package in which your
replacement kit was sent.

Install the heat sink and fan shroud assembly:
a.

Place the heat sink and fan shroud assembly back onto the heat sink assembly bracket.

Rotate the heat sink and fan shroud assembly down towards the computer base and tighten the two capture screws.

NOTICE: Ensure that the heat sink is correctly seated and secure.

1 heat sink and fan shroud assembly
2 heat sink assembly bracket
3 captive screw housings (2)

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug the cable into the computer.

10.

Connect your computer and devices to electrical outlets, and turn them on.

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

Removing the System Board
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: 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 any static electricity that could harm internal components.

Follow the procedures in "Before You Begin."

Remove any components that restrict access to the system board (optical drives, floppy drive, hard drive).

Remove the processor.

Disconnect all cables from the system board.

Remove the 10 screws that attach the system board to your computer.

1 system board
2 screws (10)

Slide the system board assembly toward the front of the computer, and then lift the board up and away.

Place the system board assembly that you just removed next to the replacement system board to ensure it is identical.

Replacing the System Board
1.

Gently align the board and slide it toward the back of the computer.

Replace the screws attaching the system board.

Replace any components and cables that you removed from the system board.

Reconnect all cables to their connectors at the back of the computer.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug the cable into the computer.

Connect your computer and devices to electrical outlets, and turn them on.

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

Removing the Power Supply
1.

Follow the procedures in "Before You Begin."

Disconnect the DC power cables from the system board and the drives.
Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives. You must
route these cables properly when you replace them to prevent them from being pinched or crimped.

Remove the four screws that attach the power supply to the back of the computer frame.

Press the release button located on the floor of the computer frame.

1 release button
2 power supply
3 screws (4)
4 AC power connector

Slide the power supply approximately 1 inch towards the front of the computer.

Lift the power supply up and out of the computer.

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

Slide the power supply into place.

Replace the screws that secure the power supply to the back of the computer frame.

Reconnect the DC power cables.

Connect the AC power cable to the connector.

Run the cables underneath the clips, and press the clips to close them over the cables.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug the cable into the computer.

Connect your computer and devices to electrical outlets, and turn them on.

Battery

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

NOTICE: 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 on the computer chassis.
A coin-cell battery maintains computer configuration, date, and time information. The battery can last several years.
If you have to repeatedly reset time and date information after turning on the computer, replace the battery.
CAUTION: A new battery can explode if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the
manufacturer. Discard used batteries according to the manufacturer's instructions.
To replace the battery:

Record all the screens in system setup so that you can restore the correct settings in step 8.

Follow the procedures in "Before You Begin."

Locate the battery socket.
NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Ensure that the object is
inserted between the battery and the socket before you attempt to pry out the battery. Otherwise, you may damage the system board by prying off
the socket or by breaking circuit traces on the system board.

Remove the battery by carefully prying it out of its socket with your fingers or with a blunt, nonconducting object such as a plastic screwdriver.

Insert the new battery into the socket with the side labeled "+" facing up, and snap the battery into place.

1 battery
2 battery socket

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

Connect your computer and devices to electrical outlets, and turn them on.

Enter system setup and restore the settings you recorded in step 1.

Properly dispose of the old battery. See the Product Information Guide for battery disposal information.

Back to Contents Page

Specifications
Dell™ Dimension™ 3100/E310 Service Manual

Processor
Processor type

Intel® Pentium® 4 with Hyper-Threading technology
NOTE: Not all Pentium 4 processors support HyperThreading technology.
Intel Celeron® D processors

Level 1 (L1) cache

At least 16 KB (dependent upon your computer
configuration)

Level 2 (L2) cache

At least 256 KB (dependent upon your computer
configuration) pipelined-burst, eight-way set
associative, write-back SRAM

Memory
Type

400- and 533-MHz DDR2 unbuffered SDRAM

Memory connectors

two

Memory capacities

256 MB, 512 MB, or 1 GB non-ECC

Maximum memory

2 GB

BIOS address

F0000h

Computer Information
Chipset

Intel 915GV

RAID support

RAID 1 (mirroring)

DMA channels

eight

Interrupt levels

BIOS chip (NVRAM)

4 Mb

NIC

Integrated network interface capable of 10/100
communication

System clock

800-MHz data rate

Video
Type

Integrated

Audio
Type

HDA

Expansion Bus
Bus type

PCI 2.3
PCI Express x1

Bus speed

PCI: 33 MHz
PCI Express: 500 MB/s bidirectional speed

PCI

connectors

two

connector size

120 pins

connector data width (maximum)

32 bits

PCI Express

connector

one x1

connector size

36 pins

connector data width (maximum)

1 PCI Express lane

Drives
Externally accessible:

one 3.5-inch drive bay (FlexBay)
two 5.25-inch drive bays

Available devices

Serial ATA drives (up to 2), floppy drive, USB memory
devices, CD drive, CD-RW drive, DVD drive, DVD-RW
drive, DVD and CD-RW combo drive, and media
reader

Internally accessible

two bays for 1-inch high hard drives

Connectors
External connectors:
Video

15-hole connector

Network adapter

RJ45 connector

USB

two front-panel and four back-panel USB 2.0compliant connectors

Audio

three connectors for line-in, line-out, and microphone;
one front-panel connector for headphones

System board connectors:
Primary IDE drive

40-pin connector on PCI local bus

Serial ATA

two 7-pin connectors

FlexBay Drive

USB 10-pin header for optional floppy drive or
optional Media Card Reader (3.5-inch bay devices)

Fan

one 5-pin connector

PCI 2.3

two 120-pin connectors

PCI Express x1

36-pin connector

Controls and Lights
Power control

push button

Power light

green light — Blinking green in sleep state; solid
green for power-on state.
amber light — Blinking amber indicates a problem
with the power supply inside the computer. If the
system cannot boot and there is a solid amber light,
this could indicate a problem with the power
connections for the CPU on the system board (see
"Power Problems" in your Owner's Manual).

Hard-drive access light

green

Link integrity light (on integrated network adapter)

green light — A good connection exists between a
10-Mbps network and the computer.
orange light — A good connection exists between a
100-Mbps network and the computer.
off (no light) — The computer is not detecting a
physical connection to the network.

Activity light (on integrated network adapter)

yellow blinking light

Diagnostic lights

four lights on the front panel (see "Diagnostic
Lights.")

Standby power light

AUX_PWR on the system board

Power
DC power supply:
Wattage

230 W

Heat dissipation

785 BTU/hr
NOTE: Heat dissipation is calculated based upon the
power supply wattage rating.

Voltage (see the safety instructions located in
the Product Information Guide for important
voltage setting information)
Backup battery

90 to 135 V and 180 to 265 V at 50/60 Hz

3-V CR2032 lithium coin cell

Physical
Height

41.4 cm (16.3 inches)

Width

18.8 cm (7.4 inches)

Depth

45.7 cm (18.0 inches)

Weight

12.7 kg (28 lb)

Environmental
Temperature:
Operating

10° to 35°C (50° to 95°F)

Storage

–40° to 65°C (–40° to 149°F)

Relative humidity:
Operating

20% to 80% (noncondensing)

Storage

5% to 95% (noncondensing)

Maximum vibration:
Operating

0.25 G at 3 to 200 Hz at 0.5 octave/min

Storage

0.5 G at 3 to 200 Hz at 1 octave/min

Maximum shock:
Operating

bottom half-sine pulse with a change in velocity of 20
inches/sec (50.8 cm/sec)

Storage

27-G faired square wave with a velocity change of
200 inches/sec (508 cm/sec)

Altitude:
Operating

–15.2 to 3048 m (–50 to 10,000 ft)

Storage

–15.2 to 10668 m (–50 to 35,000 ft)

Back to Contents Page

System Setup
Dell™ Dimension™ 3100/E310 Service Manual
Clearing Forgotten Passwords
Clearing CMOS Settings

Overview
Use system setup as follows:
l

To change the system configuration information after you add, change, or remove any hardware in your computer

To set or change a user-selectable option such as the user password

To read the current amount of memory or set the type of hard drive installed

Before you use system setup, it is recommended that you write down the system setup screen information for future reference.
NOTICE: Unless you are an expert computer user, do not change the settings for this program. Certain changes can make your computer work
incorrectly.

Entering System Setup
1.

Turn on (or restart) your computer.

When the blue DELL™ logo is displayed, you must watch for the F2 prompt to appear.

Once this F2 prompt appears, press immediately.
NOTE: The F2 prompt indicates that the keyboard has initialized. This prompt can appear very quickly, so you must watch for it to display, and then
press . If you press before you are prompted, this keystroke will be lost.

If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft® Windows® desktop. Then, shut down your
computer and try again.

System Setup Screens
The system setup screen displays current or changeable configuration information for your computer. Information on the screen is divided into three areas: the
options list, active options field, and key functions.
Options List — This field appears on the left side of
the system setup window. The field is a scrollable list
containing features that define the configuration of
your computer, including installed hardware, power
conservation, and security features.
Scroll up and down the list with the up- and downarrow keys. As an option is highlighted, the Option
Field displays more information about that option
and the option's current and available settings. By
pressing or the left and right arrow keys,
you can toggle between a primary topic (collapsed)
and subtopics (expanded).

Option Field — This field contains information about
each option. In this field you can view your current
settings and make changes to your settings.
Use the right and left arrow keys to highlight an
option. Press to make that selection active.
Key Functions — This field appears below the Option
Field and lists keys and their functions within the
active system setup field.

System Setup Options

NOTE: Depending on your computer and installed devices, the items listed in this section may not appear, or may not appear exactly as listed.

System
Lists system information such as the computer name, the BIOS version number and date,
system tags, and other system-specific information.
System Info

NOTE: The system name listed in the BIOS may not appear exactly as the name that
appears on the computer or in the computer's documentation.

Processor Info

Identifies whether the computer's processor supports Hyper-Threading and lists the
processor bus speed, processor ID, clock speed, and L2 cache.

Memory Info

Indicates amount of installed memory, memory speed, channel mode (dual or single), and
type of memory installed.

Date/Time

Displays current date and time settings.
The computer attempts to boot from the sequence of devices specified in this list.

Boot Sequence
NOTE: If you insert a boot device and restart the computer, this option appears in the
system setup menu. To boot from a USB memory device, select the USB device and move
it so it becomes the first device in the list.
Drives
Diskette Drive

Identifies and defines the floppy drive attached to the FLOPPY connector on the system
board as Off, USB, Internal, or Read Only.

Drives 0 through Identifies the drives attached to the SATA connectors on the system board, and lists the
1
capacity for hard drives.
Drives 2 through
Enables or disables an ATA device (such as a CD or DVD drive).
3
SATA Operation

Identifies and defines the SATA controller settings for RAID. You can set the SATA
controller to RAID Autodetect/AHCI, RAID Autodetect/ATA, or RAID On.

Onboard Devices

Integrated NIC
Controller

You can set the NIC to On (default), Off, or On w/ PXE. When the On w/ PXE setting is
active (available only for the future boot process), the computer prompts you to press
. Pressing this key combination causes a menu to display that allows you
to select a method for booting from a network server. If a boot routine is not available
from the network server, the computer attempts to boot from the next device in the boot
sequence list.

Integrated Audio
Enables or disables the onboard audio controller.
Controller
USB Controller

Card Reader

Set to On (default) so that USB devices will be detected and supported in the operating
system.
This field enables and disables the Media Card Reader.
Off = Media Card Reader is disabled.
On = Media Card Reader is enabled.
The factory default setting is On.
This option appears only if a Media Card Reader is installed.

Video
Primary Video

This setting specifies which video controller is primary when two video controllers are
present on the computer.

Video Memory
Size

Offering selectable options of 1MB and 8MB, this field configures the system memory
allocation reserved for the integrated video controller.

Performance
HyperThreading

If your computer's processor supports Hyper-Threading, this option appears in the
Options List.
l
l
l
l

HDD Acoustic
Mode

Bypass (default) — Your computer does not test or change the current acoustics
mode setting.
Quiet — The hard drive operates at its most quiet setting.
Suggested — The hard drive operates at the level suggested by the drive
manufacturer.
Performance — The hard drive operates at its maximum speed.

NOTE: Switching to performance mode will cause the drive heads to move faster, causing
the hard drive to be noisier. However, some drives may not see an increase in data
transfer rates.
NOTE: Changing the acoustics setting does not alter your hard drive image.

Security

This section displays available system security options.

Admin Password

This option provides restricted access to the computer's system setup program in the
same way that access to the system can be restricted with the System Password option.

System Password

Displays the current status of the system's password security feature and allows a new
system password to be assigned and verified.

Password Status

This option locks the system password field with the setup password. When the field is
locked, you can no longer disable password security by pressing when the
computer starts.

Execute Disable

This field specifies whether Execute Disable Memory Protection Technology will be on or
off.

Power Management
AC Recovery

Determines what happens when AC power is restored to the computer.
Sets the computer to automatically turn on. Choices are every day or every Monday
through Friday.

Auto Power On

The default setting is Off.
This feature does not work if you turn off your computer using a power strip or surge
protector.
Sets time to automatically turn on the computer.

Auto Power Time

Time is kept in the standard 12-hour format (hours:minutes). Change the startup time by
pressing the right- or left-arrow key to increase or decrease the numbers, or type
numbers in both the date and time fields.
This feature does not work if you turn off your computer using a power strip or surge
protector.

Suspend Mode

The options are S1, a suspend state where the computer is running in a low-power
mode, and S3, a standby state where the power is reduced or turned off for most
components, however, system memory remains active.

Maintenance
SERR DMI Message

This field controls the SERR DMI message mechanism. Some graphics cards require that
the SERR DMI message mechanism be disabled.

Asset Tag

The Asset Tag is used for customer information.

Owner Tag

The Owner Tag is used for Owner information.

Load Defaults

This option allows you to reset every option back to the way it was when the system left
the factory.

Event Log

Displays the system event log.

POST Behavior
Fastboot

When set to On (default), your computer starts more quickly because it skips certain
configurations and tests.

Numlock Key

This option involves the rightmost bank of keys on your keyboard. When set to On
(default), this option activates the numeric and mathematical features shown at the top
of each key. When set to Off, this option activates the cursor-control functions labeled on
the bottom of each key.

POST Hotkeys

This option allows you to specify the function keys to display on the screen when the
computer starts.

Keyboard Errors

This option disables or enables keyboard error reporting when the computer starts.

Boot Sequence
This feature allows you to change the boot sequence for devices.

Option Settings
l

Diskette Drive — The computer attempts to boot from the floppy drive. If the floppy disk in the drive is not bootable, if no floppy disk is in the drive, or if
there is no floppy drive installed in the computer, the computer generates an error message.

Hard Drive — The computer attempts to boot from the primary hard drive. If no operating system is on the drive, the computer generates an error
message.

CD Drive — The computer attempts to boot from the CD drive. If no CD is in the drive, or if the CD has no operating system, the computer generates an
error message.

USB Flash Device — Insert the memory device into a USB port and restart the computer. When F12 = Boot Menu appears in the upper-right corner of
the screen, press . The BIOS detects the device and adds the USB flash option to the boot menu.
NOTE: To boot to a USB device, the device must be bootable. To make sure that your device is bootable, check the device documentation.

Changing Boot Sequence for the Current Boot
You can use this feature, for example, to restart your computer to a USB device such as a floppy drive, memory key, or CD-RW drive.
NOTE: If you are booting to a USB floppy drive, you must first set the floppy drive to OFF in system setup (see "System Setup").

If you are booting to a USB device, connect the USB device to a USB connector.

Turn on (or restart) your computer.

When F2 = Setup, F12 = Boot Menu appears in the upper-right corner of the screen, press .
If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft Windows desktop. Then shut down your
computer and try again.
The Boot Device Menu appears, listing all available boot devices. Each device has a number next to it.

At the bottom of the menu, enter the number of the device that is to be used for the current boot only.
For example, if you are booting to a USB memory key, highlight USB Flash Device and press .
NOTE: To boot to a USB device, the device must be bootable. To make sure your device is bootable, check the device documentation.

Changing Boot Sequence for Future Boots
1.

Enter system setup.

Use the arrow keys to highlight the Boot Sequence menu option and press to access the menu.
NOTE: Write down your current boot sequence in case you want to restore it.

Press the up- and down-arrow keys to move through the list of devices.

Press the spacebar to enable or disable a device (enabled devices have a checkmark).

Press plus (+) or minus (–) to move a selected device up or down the list.

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

Follow the procedures in "Before You Begin."

Locate the 3-pin password jumper (PSWD) on the system board, and attach the jumper plug to pins 2 and 3 to clear the password.
NOTE: When you receive your computer, the jumper plug is attached to pin 1.

Replace the computer cover.

Connect your computer and monitor to electrical outlets, and turn them on.

After the Microsoft® Windows® desktop appears on your computer, shut down the computer.

Turn off the monitor and disconnect it from the electrical outlet.

Disconnect the computer power cable from the electrical outlet, and press the power button to ground the system board.

Open the computer cover.

10.

Locate the 3-pin password jumper (PSWD) on the system board and attach the jumper to pins 1 and 2 to reenable the password feature.
Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the cable into the computer.

11.

Connect your computer and devices to electrical outlets, and turn them on.

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

Follow the procedures in "Before You Begin."

Reset the current CMOS settings:

Locate the 3-pin CMOS jumper (RTCRST) on the system board.

Remove the jumper plug from pins 2 and 3.

Place the jumper plug on pins 1 and 2 and wait approximately five seconds.

Replace the jumper plug on pins 2 and 3.

Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug the cable into the computer.

Connect your computer and devices to electrical outlets, and turn them on.

Back to Contents Page

Technical Overview
Dell™ Dimension™ 3100/E310 Service Manual
Inside View of Your Computer
System Board Components
Power Supply DC Connector Pin Assignments

Inside View of Your Computer

bay for optional second hard drive

hard drive

floppy drive*

CD or DVD drive

power supply

system board

System Board Components

clear CMOS jumper
1

9
(RTCRST)

main power
connector

2 fan connector (CPU FAN)

10 IDE drive connector

3 floppy drive connector (FLOPPY)

4 processor and heat sink connector

12 PCI Express x1 card connector

5 processor power connector

13 PCI card connectors

6 memory module connectors (1, 2)

FlexBay USB
connector

password jumper
(PSWD)
SATA connectors
7

15 battery socket (BATTERY)
(SATA-0 and SATA-1)

8 front panel I/O connector

Jumper Settings
The jumper locations are shown below.

Jumper

Setting

Description

PSWD

Password features are enabled (default).

Password features are disabled.

RTCRST

The real-time clock has not been reset.

The real-time clock is being reset (jumpered
temporarily).

jumpered

unjumpered

Power Supply DC Connector Pin Assignments

DC Power Connector P1

Pin Number

Signal Name

Color

Wire Gauge

+3.3 VDC

Orange

18-AWG

+3.3 VDC

Orange

18-AWG

COM

Black

18-AWG

+5 VDC

Red

18-AWG

COM

Black

18-AWG

+5 VDC

Red

18-AWG

COM

Black

18-AWG

POK

Gray

18-AWG

+5 VFP

Purple

18-AWG

+12 VB DC

Yellow

18-AWG

+12VB DC

Yellow

18-AWG

+3.3 VDC

Orange

18-AWG

+3.3 VDC

Orange

18-AWG

-12 VDC

Blue

18-AWG

COM

Black

18-AWG

PS-ON

Green

18-AWG

COM

Black

18-AWG

COM

Black

18-AWG

COM

Black

18-AWG

N/C

18-AWG

+5 VDC

Red

18-AWG

+5 VDC

Red

18-AWG

+5 VDC

Red

18-AWG

COM

Black

18-AWG

DC Power Connector P2

Pin Number

Signal Name

18-AWG Wire

COM

Black

COM

Black

+12 VA DC

Yellow

+12 VA DC

Yellow

DC Power Connect P3 and P5

Pin Number

Signal Name

18-AWG Wire

+3.3 VDC

Orange

COM

Black

+5 VDC

Red

COM

Black

+12 VB DC

Yellow

DC Power Connector P7

Pin Number

Signal Name

18-AWG Wire

+5 VDC

Red

COM

Black

COM

Black

+12 V DC

Yellow

DC Power Connectors P8 and P9

Pin Number

Signal Name

18-AWG Wire

+12 VA DC

Yellow

COM

Black

COM

Black

+5 VDC

Red

Back to Contents Page

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Dell Personal Computer 3100 Users Manual Dimension 3100/E310 Service

Dell-Dimension-3100-E310-Service-Manual-110605 dell-dimension-3100-e310-service-manual-110605

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