Chapter 7 Power and Signal Distribution

7.3POWER DISTRIBUTION

7.3.1 3.3/5/12 VDC DISTRIBUTION

The power supply assembly includes a multi-connector cable assembly that routes DC power to the system board as well as to the individual drive assemblies. Figure 7-2 shows the power supply cabling for D315 models while figure 7-3 shows the power supply cabling for the d325 model.

Power Supply

Assembly

(Assy. #226910)

P2

P8

 

 

 

 

P7, P8

 

P6

P7

To

 

 

4

3

2

1

 

 

Drive

 

 

 

 

 

 

 

 

 

 

 

 

Assemblies

P2, P4-6

 

 

 

 

P4

P5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

 

 

 

P9

 

 

P3

P9

 

 

 

2

1

P3

 

 

 

 

1

2

4

3

To

P1 System

Board

P1

11 12 13 14 15 16 17 18 19 20

1 2 3 4 5 6 7 8 9 10

Conn.

Pin 1

Pin 2

 

Pin 3

Pin 4

Pin 5

Pin 6

Pin 7

Pin 8

Pin 9

Pin 10

 

P1

+3.3

+3.3

 

RTN

+5

RTN

+5

RTN

POK

+5 Aux

+12

 

P1 [1]

+3.3

-12

 

RTN

PS On

RTN

RTN

RTN

NC

+5

+5

 

P2, 4-6

+12

GND

 

GND

+5

 

 

 

 

 

 

 

P3

GND

GND

+12.8

+12.8

 

 

 

 

 

 

 

P7, 8

+5

GND

 

GND

+12

 

 

 

 

 

 

 

P9

FS

FC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTES:

Connectors not shown to scale.

All + and - values are VDC. RTN = Return (signal ground) GND = Power ground

RS = Remote sense POK = Power OK NC = Not connected FS = Fan Sink

FC = Fan Command

[1] This row represents pins 11 - 20 of connector P1

Figure 7-2. D315 Model Power Cable Diagram

7-6Compaq D315 and hp d325 Personal Computers Featuring the AMD Athlon XP Processor

Second Edition - April 2003

Page 130
Image 130
HP D315 manual Power Distribution, 1 3.3/5/12 VDC Distribution, Conn Pin, Rtn Pok