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Technical Reference Guide 361834-002 7-1
7
Power and Signal 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 7-8
■ Signal distribution (7.4), page 7-13
7.2 Power Supply Assembly/Control
These systems feature a power supply assembly that is controlled through programmable logic
(Figure 7-1).
Figure 7-1. Power Distribution and Control, Block Diagram
System Board
Power Supply
Power On
CPU, slots, Chipsets, Logic,
Front Bezel
& Voltage Regulators
Assembly
Fan
PS On
+5 VDC
+12 VccP
Power Button
Spd
+12 VDC
-12 VDC
+3.3 VDC
Drives
+3.3 VDC
+5 VDC
+12 VDC
AC Select [1]
110 VAC
220 VAC
NOTE:
[1] 300-watt power supply only.