Technical Reference Guide
Chapter 7
POWER and SIGNAL
DISTRIBUTION
7.
Chapter 7 POWER SUPPLY AND DISTRIBUTION
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) page 7-1
♦ Power distribution (7.3) page 7-7
♦ Signal distribution (7.4) page 7-10
7.2 POWER SUPPLY ASSEMBLY/CONTROL
This system features a power supply assembly that is controlled through programmable logic
Figure 7-1). (
P
Assembly
-5 VDC
+12 VDC
CPU, Slots, Chipsets, Logic
AUX [2]
System BoardFront Bezel
[1]
1
+12.8
Vcpu
10/220
Select
Switch [2]
+12 VDC
+5 VDC
Fan
Spd
Mains
Power On
Power On/Off
+3.3
PS
On
& Voltage Regulators
+5
AUX
110/230 VAC
-12 VDC
+5 VDC
ower Supply
Drives
igure 7-1. Power Distribution and Control, Block Diagram
F
hp compaq d330 and d530 Series of Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition - June 2003
7-1