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Technical Overview: Dell Dimension 4600 Series Service Manual

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Technical Overview

Dell™ Dimension™ 4600 Series Service Manual

  Looking Inside Your Computer

  System Board Components

  Power Supply DC Connector Pin Assignments



Looking Inside Your Computer

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in your Owner's Manual.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the computer cover.


System Board Components


Power Supply DC Connector Pin Assignments

The 250-W power supply can operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at 50 Hz. The power supply provides the DC operating voltages and currents listed in the following table.

Output Voltage

Minimum Current (A)

Maximum Current (A)1

+12 VDC

0.0

14.03

+5 VDC

1.0

22.03

+3.3 VDC

0.1/0.02

18.03

–12 VDC

0.0

1.0

+5 VFP

0.0

2.0

When the current load is outside of the ranges listed, but within each specified output current range, the +5-V, +12-V, and +3.3-V outputs are allowed to regulate at +/–10% of nominal DC voltages.

1Maximum continuous total DC output cannot exceed 200 W. Maximum continuous combined load on +5-VDC and +3.3-VDC outputs cannot exceed 135 W.

2In system applications where +3.3 VDC is not used, these values may be 0 A without affecting the regulation on the other outputs.

3The required full load combinations are adjusted so that the total output power is less than or equal to 250 W.

DC Power Connector P1

Pin Number

Signal name

18-AWG Wire

1

+3.3 VDC

Orange

2

+3.3 VDC

Orange

3

COM

Black

4

+5 VDC

Red

5

COM

Black

6

+5 VDC

Red

7

COM

Black

8

POK*

Gray

9

+5 VFP

Purple

10

+12 VDC

Yellow

11

+3.3 VDC

Orange

12

–12 VDC*

Blue

13

COM

Black

14

PS ON*

Green

15

COM

Black

16

COM

Black

17

COM

Black

18

-

No connect

19

+5 VDC

Red

20

+5 VDC

Red

*Use 22-AWG wire instead of 18-AWG wire.

DC Power Connector P2

Pin Number

Signal Name

18-AWG Wire

1

COM

Black

2

COM

Black

3

+12 VDC

Yellow

4

+12 VDC

Yellow

DC Power Connectors P3, P5, P6, P8 and P9

Pin Number

Signal Name

18-AWG Wire

1

+12 VDC

Yellow

2

COM

Black

3

COM

Black

4

+5 VDC

Red

DC Power Connector P4

Pin Number

Signal Name

22-AWG Wire

1

-

No connect

2

COM

Black

3

COM

Black

4

+3.3 VDC

Orange

5

+5VDC

Red

6

+12VDC

Yellow

DC Power Connector P7

Pin Number

Signal Name

22-AWG Wire

1

+5 VDC

Red

2

COM

Black

3

COM

Black

4

+12 VDC

Yellow


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