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)
7.2
POWER 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
110/230 VAC
Mains
110/220
Select
Switch
F
igure 7-1. Power Distribution and Control, Block Diagram
page 7-1
page 7-6
page 7-10
System Board
CPU, Slots, Chipsets, Logic
& Voltage Regulators
PS
Fan
Fan
+5
+12.8
On
S
ink
C
md
AUX
Vcpu
P
ower Supply
Assembly
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition - April 2003
Technical Reference Guide
+5 VDC
+5 VDC
-5 VDC
+12 VDC
+12 VDC
-12 VDC
Drives
7-1