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Technical Reference Guide
Compaq Deskpro EXS and Workstation 300 Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition - December 2000
6-5
6.3 POWER DISTRIBUTION
6.3.1 3.3/5/12 VDC DISTRIBUTION
The power supply assembly includes a multi-connector cable assembly that routes +3.3 VDC, +5
VDC, -5 VDC, +12 VC, and -12 VDC to the system board as well as to the individual drive
assemblies. Figure 6-2 shows the power supply cabling for Deskpro EXS and Workstation 300
series units.
Conn. Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12
P1 +3.3 +3.3 RTN +5 RTN +5 AuxRtn FO +5 Aux +12 +3.3Aux FSpd
P1 [1] +3.3 -12 Rtn PS On RTN RSRTN RTN -3.3 +5 +5 +3.3RS FS
P2, 4-7 +5 GND GND +12
P3 GND GND +12.8 +12.8
NOTES:
Connectors not shown to scale.
All + and - values are VDC
.
RTN = Return (signal ground)
GND = Power ground
RS = Remote sense
FO = Fan off
FSpd = Fan speed
FS = Fan Sink
[1] This row represents pins 13-24 of connector P1.
Figure 6–2. Power Cable Diagram
P7
4 3 2 1
P1
1 1211 2 5 4 3 7 6
14
10
13
8 9
15 16 17 18 19 20 21 22 23 24
Power Supply
Assembly
(SP# 195196)
To
Drive
Assemblies
P1
P7
To
System
Board
P6
P4
P2
P5
P3
12
34
P3
1 2 3 4
P2-P6