Technical Overview

Dell™ Dimension™ 5150/E510 Service Manual

Power Supply DC Connector Pin Assignments

Front View of the Computer

1

cover latch release

Use this latch to remove the computer cover.

2

location of Service Tag

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

3

CD or DVD eject button

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

4

CD or DVD activity light

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

5

FlexBay

Can contain an optional floppy drive or optional Media Card Reader. For more information about the Media Card Reader, see your computer Owner's Manual.

6

microphone connector

Use the microphone connector to attach a personal computer microphone for voice or musical input into a sound or telephony program.

On computers with a sound card, the microphone connector is on the card.

7

headphone connector

Use the headphone connector to attach headphones.

8

diagnostic lights (4)

Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see "Diagnostic Lights."

9

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.

10

power button,

power light

Press the power button to turn on the computer. The power light in the center of this button indicates the power state. See "Specifications" for more information.

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

11

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, keyboards, and mice, or for bootable USB devices, which may not function properly if attached to the front connectors.

12

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: Do not lift or carry the computer by the vents to avoid damage to the computer.

NOTICE: Keep the vent area clean and dust-free to ensure that the computer is adequately ventilated. Use only a dry cloth to clean the vent area to avoid water damage to the computer.

Back View of the Computer

1

voltage selection switch

See the safety instructions in the Product Information Guide for more information.

2

power connector

Insert the power cable.

3

back panel connectors

Plug USB, audio, and other devices into the appropriate connector.

4

card slots

Access connectors for any installed PCI and PCI Express cards.

1

link integrity light

Green — A good connection exists between a 10-Mbps network and the computer.
Orange — A good connection exists between a 100-Mbps network and the computer.
Off — The computer is not detecting a physical connection to the network.

2

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 the back panel of 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.

3

network activity light

Flashes a yellow light when the computer is transmitting or receiving network data. A high volume of network traffic may make this light appear to be in a steady "on" state.

4

surround connector

Use the black surround connector to attach multichannel-capable speakers.

5

line-in connector

Use the blue line-in connector to attach a record/playback device such as a cassette player, CD player, or VCR.

On computers with a sound card, use the connector on the card.

6

line-out connector

Use the green line-out connector (available on computers with integrated sound) to attach headphones and most speakers with integrated amplifiers.

On computers with a sound card, use the connector on the card.

7

micro-phone/side surround connector

Use the pink and silver connector to attach a personal computer microphone for voice or musical input into a sound or telephony program.

On computers with a sound card, the microphone connector is on the card.

The side-surround output provides enhanced surround audio for computers with 7.1 speakers.

8

center/subwoofer connector

Use the yellow connector to attach a speaker to a Low Frequency Effects (LFE) audio channel.

9

VGA video connector

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

10

USB 2.0 connectors (5)

Use the back USB connectors for devices that typically remain connected, such as printers, keyboards, and mice, or for bootable USB devices which may not function properly if attached to the front connectors (see "System Setup" for more information on booting to a USB device)

It is recommended that you use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras.

Inside View of Your Computer

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

System Board Components

Power Supply DC Connector Pin Assignments

DC Main Power Connector P1

Pin Number

Signal Name

18-AWG Wire

1

+3.3 VDC*

Orange

2

+3.3 VDC*

Orange

3

COM

Black

4

+5VDC

Red

5

COM

Black

6

+5 VDC

Red

7

COM

Black

8

POK

Gray

9

+5 VFP

Purple

10

+12 VBDC

White

11

+12 VBDC

White

12

+3.3 VDC*

Orange

13

+3.3 VDC*/SE*

Orange

14

–12 VDC

Blue

15

COM

Black

16

PS-ON

Green

17

COM

Black

18

COM

Black

19

COM

Black

20

NA

NA

21

+5 VDC

Red

22

+5 VDC

Red

23

+5 VDC

Red

24

COM

Black

*The orange +3.3 VDC output wires must be 16 AWG. The +3.3 VDC terminals are high current type (9 A current rating/Molex-HCS type).

*The +3.3VDC/SE is a brown sense wire for +3.3VDC and is optional.

Pin Number	Signal Name	18-AWG Wire
1	+3.3 VDC*	Orange
2	+3.3 VDC*	Orange
3	COM	Black
4	+5VDC	Red
5	COM	Black
6	+5 VDC	Red
7	COM	Black
8	POK	Gray
9	+5 VFP	Purple
10	+12 VBDC	White
11	+12 VBDC	White
12	+3.3 VDC*	Orange
13	+3.3 VDC/SE	Orange
14	–12 VDC	Blue
15	COM	Black
16	PS-ON	Green
17	COM	Black
18	COM	Black
19	COM	Black
20	NA	NA
21	+5 VDC	Red
22	+5 VDC	Red
23	+5 VDC	Red
24	COM	Black
The orange +3.3 VDC output wires must be 16 AWG. The +3.3 VDC terminals are high current type (9 A current rating/Molex-HCS type). The +3.3VDC/SE is a brown sense wire for +3.3VDC and is optional.

DC Processor Power Connector P2

Pin Number

Signal Name

18-AWG Wire

1

COM

Black

2

COM

Black

3

+12 VADC

Yellow

4

+12 VADC

Yellow

Pin Number	Signal Name	18-AWG Wire
1	COM	Black
2	COM	Black
3	+12 VADC	Yellow
4	+12 VADC	Yellow

DC Peripheral Connectors P3 and P5

Pin Number

Signal Name

18-AWG Wire

1

+3.3 VDC

Orange

2

COM

Black

3

+5 VADC

Red

4

COM

Black

5

+12 VBDC

White

Pin Number	Signal Name	18-AWG Wire
1	+3.3 VDC	Orange
2	COM	Black
3	+5 VADC	Red
4	COM	Black
5	+12 VBDC	White

DC FDD Connector P7

Pin Number

Signal Name

18-AWG Wire

1

+5 VDC

Red

2

COM

Black

3

COM

Black

4

+12 VADC

Yellow

Pin Number	Signal Name	18-AWG Wire
1	+5 VDC	Red
2	COM	Black
3	COM	Black
4	+12 VADC	Yellow

DC Peripheral Connectors P8 and P9

Pin Number

Signal Name

18-AWG Wire

1

+12 VBDC

White

2

COM

Black

3

COM

Black

4

+5 VDC

Red

Pin Number	Signal Name	18-AWG Wire
1	+12 VBDC	White
2	COM	Black
3	COM	Black
4	+5 VDC	Red

Back to Contents Page

1	cover latch release	Use this latch to remove the computer cover.
2	location of Service Tag	Use the Service Tag to identify your computer when you access the Dell Support website or call technical support.
3	CD or DVD eject button	Press to eject a disk from the CD or DVD drive.
4	CD or DVD activity light	The drive light is on when the computer reads data from the CD or DVD drive.
5	FlexBay	Can contain an optional floppy drive or optional Media Card Reader. For more information about the Media Card Reader, see your computer Owner's Manual.
6	microphone connector	Use the microphone connector to attach a personal computer microphone for voice or musical input into a sound or telephony program. On computers with a sound card, the microphone connector is on the card.
7	headphone connector	Use the headphone connector to attach headphones.
8	diagnostic lights (4)	Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see "Diagnostic Lights."
9	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.
10	power button, power light	Press the power button to turn on the computer. The power light in the center of this button indicates the power state. See "Specifications" for more information. NOTICE: To avoid losing data, do not use the power button to turn off the computer. Instead, perform an operating system shutdown.
11	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, keyboards, and mice, or for bootable USB devices, which may not function properly if attached to the front connectors.
12	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: Do not lift or carry the computer by the vents to avoid damage to the computer. NOTICE: Keep the vent area clean and dust-free to ensure that the computer is adequately ventilated. Use only a dry cloth to clean the vent area to avoid water damage to the computer.

1	voltage selection switch	See the safety instructions in the Product Information Guide for more information.
2	power connector	Insert the power cable.
3	back panel connectors	Plug USB, audio, and other devices into the appropriate connector.
4	card slots	Access connectors for any installed PCI and PCI Express cards.

1	link integrity light	Green — A good connection exists between a 10-Mbps network and the computer. Orange — A good connection exists between a 100-Mbps network and the computer. Off — The computer is not detecting a physical connection to the network.
2	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 the back panel of 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.
3	network activity light	Flashes a yellow light when the computer is transmitting or receiving network data. A high volume of network traffic may make this light appear to be in a steady "on" state.
4	surround connector	Use the black surround connector to attach multichannel-capable speakers.
5	line-in connector	Use the blue line-in connector to attach a record/playback device such as a cassette player, CD player, or VCR. On computers with a sound card, use the connector on the card.
6	line-out connector	Use the green line-out connector (available on computers with integrated sound) to attach headphones and most speakers with integrated amplifiers. On computers with a sound card, use the connector on the card.
7	micro-phone/side surround connector	Use the pink and silver connector to attach a personal computer microphone for voice or musical input into a sound or telephony program. On computers with a sound card, the microphone connector is on the card. The side-surround output provides enhanced surround audio for computers with 7.1 speakers.
8	center/subwoofer connector	Use the yellow connector to attach a speaker to a Low Frequency Effects (LFE) audio channel.
9	VGA video connector	If your monitor has a VGA connector, plug it into the VGA connector on the computer.
10	USB 2.0 connectors (5)	Use the back USB connectors for devices that typically remain connected, such as printers, keyboards, and mice, or for bootable USB devices which may not function properly if attached to the front connectors (see "System Setup" for more information on booting to a USB device) It is recommended that you use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras.