DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-3AC-POWER
9
AC-POWER
AC Power for AC-Powered Systems
DEFINITY systems support two different cabinet types: Multi-Carrier Cabinets
and Single-Carrier Cabinets. Single-Carrier Cabinets are used only for EPNs.
Both cabinet types may be powered by either AC or DC power source.
Environmental maintenance differs according to cabinet type and 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.
Single-Carrier Cabinet Power Systems
Each Single-Carrier Cabinet has one power supply that distributes DC power
and AC ringing voltage to the circuit pack slots in the cabinet.
AC Power Supply (WP-91153)
In an AC-powered cabinet, a single, plug-in, multi-output AC power supply is in
the power supply slot. A power cord, with a three-prong plug on one end and an
appliance connector on the other end, connects the supply to a dedicated AC
power source. The inputs to the power supply can be (depending on list version):
■ 120 VAC, 60 Hz, 15 Amp to 20 Amp; three wires in the power cord: one hot
wire, one neutral wire, and one ground wire
■ 220 VAC or 240 VAC, 50 Hz, 10 Amp; three wires in the power cord: one
hot wire, one neutral wire, and one ground wire
The AC power supply produces the following DC outputs: +5 VDC, -5 VDC,
-48 VDC, +12 VDC, and a battery-charging voltage. The DC outputs distribute
power on the cabinet backplane to the circuit pack slots.
MO Name (in
Alarm Log) Alarm Level Initial Command to Run Full Name of MO
AC-POWER WARNING test environment UU
1
1. UU is the universal cabinet number (1 for PPN, 2 - 44 for EPNs).
AC Power
