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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-287CARR-POW (Carrier Port Power Unit) for DC-Powered Systems
10
Figure 10-21. Power Distribution Unit for DC-Powered Systems (PDU
58890CF-1)
A-R B-R C-R D-R E-R
FLTA FLTB
A-L B-L C-L D-L E-L
OFF OFF OFF OFF OFF
OFF OFF
OFF OFF OFF OFF OFF
ON ON ON ON ON
ON ON
ON ON ON ON ON
TB2
-48VDC
Return
OFF OFF OFF
ON ON ON
2A
Circuit
Breakers
Front View
Ring Generator
Power Distribution Unit
Main
On/Off
Switch
Back View
-48VDC
A
-48VDC
B
CB8 CB9 CB10 CB11 CB12CB7CB2 CB3 CB4 CB5CB1 CB6