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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 7-6
♦ Signal distribution (7.4) page 7-10
7.2 POWER SUPPLY ASSEMBLY/CONTROL
These systems features a power supply assembly that is controlled through programmable logic
Figure 7-1). (
P
-12 VDC
110/230 VAC
CPU, Slots, Chipsets, Logic
System BoardFront Bezel
+12 VDC
+12.8
Vcpu
110/220
Select
Switch
+5 VDC
Fan
md C
Mains
Power On
Power On/Off
Fan
ink S
PS
On
& Voltage Regulators
+5
AUX
-5 VDC
+12 VDC
+5 VDC
ower Supply
Assembly
Drives
igure 7-1. Power Distribution and Control, Block Diagram
F
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition - April 2003
7-1