Chapter 7 Power Supply And Distribution; Introduction; Power Supply Assembly/Control; Figure 7-1. Power Distribution And Figure 7-2. Small Form Factor - Compaq Evo D500 Technical Reference Manual

Chapter 7
POWER and SIGNAL
DISTRIBUTION

Chapter 7 POWER SUPPLY AND DISTRIBUTION

7.
7.1

INTRODUCTION

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)

♦ Power distribution (7.3)
♦ Signal distribution (7.4)
7.1 POWER SUPPLY ASSEMBLY/CONTROL
This system features a power supply assembly that is controlled through programmable logic
(Figure 7-1).
Front Bezel
Power On/Off
Power On
110/230 VAC
Mains
110 VAC
110/230 VAC
Select SW
230 VAC
Figure 7–1. Power Distribution and Control, Block Diagram
page 7-1
page 7-5
page 7-8
System/Backplane Board
Slots, Chipsets, Logic
& Voltage Regulators
+3.3
Fan Fan
PS +5
AUX
Off Spd
On AUX
Power Supply
Assembly
Compaq Deskpro and Evo Personal Computers
Featuring Intel Celeron and Pentium III Processors
Fifth Edition - March 2002
Technical Reference Guide
+5 VDC
+12 VDC
-12 VDC
Drives
7-1