Technical Reference Guide www.hp.com 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 7-12
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 [1]
+12 VDC
-12 VDC
+3.3 VDC
Drives
+3.3 VDC
+5 VDC
+12 VDC
90 - 264 VAC
NOTE:
[1] Not present on CMT.
5 AUX
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