Service manual

System Overview 1-103
Figure 1–47 shows the location and use of the power distribution panel which is
part of the power subrack. The power distribution panel performs the “oring
functions” described in Section 1.22.
Figure 1–47 also shows power cabling in a power cabinet.
Marks the connections made by the cable connecting the AC input box and
the power distribution panel on the subrack.
Shows the cable connections made by power and signal cables from the
power distribution panel and the power cabinet bulkhead.
Shows the cable connections made by the power cable connecting the
subrack(s) and the OCP.
The power distribution panel on the power subrack is where much of the
logic controlling power resides.
The power cabinet bulkhead is a piece of sheet metal with cutouts through
which power and signal cables from the power distribution panel mate with
cables that carry power and signals to the system boxes, H-switch, and
blowers.