Power And Signal Distribution; Introduction; Power Distribution - Compaq dc5850 - Microtower PC Technical Reference Manual

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.
Front Bezel
Power Button
Power On
90 - 264 VAC
Figure 7-1. Power Generation Block Diagram
Technical Reference Guide

Power and Signal Distribution

System Board
CPU, slots, Chipsets, Logic,
& Voltage Regulators
+3.3 VDC 5 AUX
POK
PS On
Power Supply
www.hp.com
+12 VDC +12 VccP
+5 VDC
Unit
7
-12 VDC
+3.3 VDC
+5 VDC
Drives
+12 VDC
7-1