DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-370CARR-POW (Carrier Power Supply)
9
CARR-POW (Carrier Power Supply)
DEFINITY systems support two different cabinet types: multi-carrier and
single-carrier. Single-carrier cabinets are used only for EPNs. Both cabinet types
may be powered by either AC or DC external power source. Environmental
maintenance differs according to cabinet type and external power supply.
!
CAUTION:
Before powering down a cabinet or carrier that contains DEFINITY AUDIX
circuit packs (TN566), first power down the AUDIX unit to avoid damaging
the AUDIX software. Instructions for powering down this unit are in the
‘‘DEFINITY AUDIX System Power Procedures’’
in Chapter 5, ‘‘Alarms, Errors,
and Troubleshooting’’, on the circuit pack, and in DEFINITY AUDIX
documentation.
The CARR-POW maintenance object represents the pair of power supplies that
supply +5V, -48V and -5 VDC power to each carrier in a multi-carrier cabinet. In
AC-powered cabinets, these are called Off Line Switches (OLS); in DC-powered
cabinets, they are DC/DC converters.
Cycling Power Supplies
When a port carrier power supply problem is reported by hardware, the system
can cycle the power supplies in that carrier. When a carrier is cycled, the power
supplies are turned off for 2 seconds and then turned back on. The system
cannot cycle the power supplies on any of the following types carriers even if
they are duplicated:
— PPN control carrier
— Expansion control carrier
— Switch node carrier
— Single-carrier cabinet
!
WARNING:
When port carrier power is cycled, all service dependent upon circuit packs
in that carrier are disrupted.
MO Name (in
Alarm Log) Alarm Level
Initial Command to
Run
1
1.
UU
is the universal cabinet number (1 for PPN, 2-44 for EPNs),
C
is the carrier designation (A,
B, C, D, or E). Cycle the carrier indicated by the PORT field in the alarm log.
Full Name of MO
CARR-POW MAJOR Cycle carrier
UUC
Carrier Port Power Supply
