Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Control Unit Problems
Page 4-9
Power Supply Problems
Figure 4-3. Replacing an Auxiliary Power Supply
!
CAUTION:
Do not plug the power supply or the auxiliary power unit into the AC
outlet until you are ready to turn on the system, as described in
“Powering Up the System” in Chapter 2 of Installation
.
Do not attach the power cord(s) to any building surfaces.
AC 
Outlet
-48 VDC
Auxiliary
Power
Input
AC
Input
Auxiliary
Power 
Unit
AUX
POWER
AC
INPUT
-48 VDC
Power Cord
Control Unit
AC Power Cord
Ground
Wire
Ferrite
Cores
AUX Power Unit
AC Power Cord
Processor