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Chapter 7 power and signal distribution, Power and signal distribution, 1 introduction – HP DC5850 User Manual

Page 75: 2 power distribution

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Technical Reference Guide

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7-1

7

Power and Signal Distribution

7.1 Introduction

This chapter describes the power supplies and discusses the methods of general power and signal
distribution. Topics covered in this chapter include:

Power distribution (7.2)

Power Control (7.3)

Signal distribution (7.4)

7.2 Power

Distribution

Each form factor uses a unique power supply unit (PSU). The PSUs are not interchangeable
between the SFF and MT form factors.

These systems use a power supply assembly contained within the system chassis. Figure 7-1
shows the block diagram for power generation.

Figure 7-1. Power Generation Block Diagram

System Board

Power Supply

Power On

CPU, slots, Chipsets, Logic,

Front Bezel

& Voltage Regulators

Unit

PS On

+5 VDC

+12 VccP

Power Button

POK

+12 VDC

-12 VDC

+3.3 VDC

Drives

+3.3 VDC

+5 VDC

+12 VDC

90 - 264 VAC

5 AUX