![](http://pdfasset.owneriq.net/3/85/385194ee-e359-4e7e-ad27-34bc4dc71287/385194ee-e359-4e7e-ad27-34bc4dc71287-bg102.png)
Powering Down the System
-48 VDC
Auxiliary
Power
Auxiliary
Power
Input
Unit
AC
AUX
INPUT
POWER
-48 VDC
Power Cord
‘
Ground
Wire
AUX Power Unit
AC
AC Power Cord
Outlet
Ferrite
Cores
Control Unit
AC Power Cord
Figure 9–2. Powering Down the System
Upgrading the System 9–5