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Figure 20 shows a –48-volt DC power supply in a
CoreBuilder 9000 16-slot chassis.
Figure 20 CoreBuilder 9000 16-slot Chassis with a –48-volt
DC Power Supply Installed
ON
-48V
0V
STANDBY
INPUT RATING
-48 V
/27A
Power supply
Power supply
(in slot 1)
slot 3
Power supply
slot 2
Power supply
slot 4
Fan Trays
The CoreBuilder 9000 16-slot chassis contains three
fan trays, each of which contains three fans (Model
Number 3CB9EF). Six fans (two trays) cool the
interface modules and switch fabric modules. Three
fans (one tray) cool the power supplies and
management modules (Figure 21).
Figure 21 CoreBuilder 9000 16-slot Chassis Rear View with
Fan Trays
Hardware Components
Module
fan trays
Spring-loaded
screw
Power supply
and
management
module fan tray
39
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