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Preparation for Hardware Maintenance
Disconnecting AC Power
To disconnect the AC power, see Figure 1-6, and follow the steps below.
1 Disconnect the AC power to each auxiliary power unit by unplugging the
power cord from the wall outlet.
2 Disconnect the AC power to each carrier by unplugging the power cord
from the wall outlet.
Auxiliary
Power
Unit
-48 VDC
Auxiliary
Power
Input
I
AC
INPUT
AUX
POWER
AC
Input
-48 VDC
Power Cord
Ground
Wire
Ferrite
Cores
AUX Power Unit
AC
AC Power Cord
Outlet
Control Unit
AC Power Cord
Figure 1-6. Disconnecting AC Power
Introduction 1-17