Technical Reference Guide
Compaq Deskpro EP Series of Personal Computer
First Edition – April 1998
6-1
Drives
110/220 VAC
Chapter 6
POWER and SIGNAL DISTRIBUTION
6.
Chapter 6 Power and Signal Distribution
6.1
INTRODUCTION
This chapter describes the power supply and method of general power and signal distribution in
the Compaq Deskpro CONTACT Personal Computer. Topics covered in this chapter include:
♦
Power supply assembly/control (6.2) page 6-1
♦
Power distribution (6.3) page 6-5
♦
General signal distribution (6.4) page 6-7
6.2
POWER SUPPLY ASSEMBLY/CONTROL
The power supply assembly is controlled through an ACPI-compliant switch on the front bezel of
the system.
Figure 6–1
.
Power Supply Assembly and Associated Circuitry, Block Diagram
Power Supply
Assembly
+5 VDC
-5 VDC
+12 VDC
-12 VDC
+5 AUX
Slots, Chipsets, Logic
& Voltage Regulators
PS
On
Fan
Off
+3.3 VDC
System Board
Power On/Off
Front Bezel
Power On
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