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CDA 7 Maintenance Manual
1.3
POWER Subsystem
The CDA 7 power subsystem provides a redundant source of DC power to the
major components in the CDA 7 cabinet.
Figure 1-21 provides an overview of the EPO assembly and power supplies
above it.
8
7
6
5
4
3
3.5 DISK CAGE
DRIVE CAGE FRONT
F1
2
1
POWER
BUSS
BARS 3.5 DISK CAGE
+24V
F2
CARD CAGE
BACKPLANE
24VRTN
DRIVE CAGE REAR
F1
PAN
TACHS
+24V
F2
PARALLEL PORT CABLE
24VRTN
RS232 CABLE
DRIVE CAGE FRONT
F1
F2
F3
F4
POWER SUPPLY STATUS
/ CONTROL CABLE
+24V
24VRTN
DRIVE CAGE REAR
PS#1
F1
F2
F3
F4
+24V
+ + +
5V 12V 24V
-
24VRTN
AC PH1
AC PH2
GND
PS#2
EPO BOX
RED SW BLK SW
BAT
+ + + STATUS
5V 12V 24V CONN
AC PH1AC PH2
GND
AC MAIN
INPUT
STATUS
CONN
-
-
BAT
+
-
DC/DC
CONV
12 VOLTS
BATTERY BOX
- +
BAT4
- +
BAT3
- +
BAT2
- +
BAT1
In the case of 9 GB disks,
the 2nd power supply is optional.
Figure 1-21.
1-22
CDA 7 Power Subsystem
77 A7 48UU Rev03