Technical Reference Guide

Chapter 7

POWER and SIGNAL

DISTRIBUTION

7.Chapter 7 POWER SUPPLY AND DISTRIBUTION

7.1INTRODUCTION

This chapter describes the power supply and method of general power and signal distribution. Topics covered in this chapter include:

♦ Power supply assembly/control (7.2)

page 7-1

Power distribution (7.3)

page 7-6

Signal distribution (7.4)

page 7-10

7.2POWER SUPPLY ASSEMBLY/CONTROL

These systems features a power supply assembly that is controlled through programmable logic (Figure 7-1).

Front Bezel

Power On/Off

Power On

System Board

CPU, Slots, Chipsets, Logic

& Voltage Regulators

Mains

110/230 VAC

PS

Fan

Fan

+5

+12.8

On

Sink

Cmd

AUX

Vcpu

+5 VDC

+5 VDC

-5 VDC

 

110/220 Select Switch

Power Supply

Assembly

+12 VDC

Drives

+12 VDC

-12 VDC

 

Figure 7-1.Power Distribution and Control, Block Diagram

Compaq D315 and hp d325 Personal Computers 7-1

Featuring the AMD Athlon XP Processor

Second Edition - April 2003

Page 125
Image 125
HP D315 manual Power Supply ASSEMBLY/CONTROL, Aux