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Maintenance Object Repair Procedures
555-233-123 10-360 Issue 4 May 2002
CARR-POW (Carrier Port Power Unit)
for AC-Powered Systems
DEFINITY Generic 1 offers two basic cabinet type configurations: (1) the
multicarrier cabinet system and (2) the single-carrier cabinet system. Both cabinet
system configurations may be powered by either an external AC or DC power
source.
NOTE:
For environment maintenance, the aspects of a PPN configuration for a
High or Critical Reliability system or of an EPN cabinet configuration are
irrelevant.
The environment maintenance strategy to be used depends on both the cabinet
configuration and the type of powering. Therefore, refer to the following list to find
the appropriate MO section(s).
■
For a single-carrier cabinet system, refer to the “DC-POWER” Maintenance
documentation for environment maintenance strategy.
■
For a multicarrier cabinet system using an external AC power source, refer
to one or more of the following Maintenance documentation sections:
“AC-POWER”, “CUST-ALM (Customer-Provided Alarming Device)”, or
“POWER (Battery & Battery Charger) for AC-Powered Systems”.
■
For a multicarrier cabinet system using an external DC power source, refer
to one or more of the following Maintenance documentation sections:
“AC-POWER (AC Power) for DC-Powered Systems”, “CUST-ALM
(Customer-Provided Alarming Device)”, or “POWER (Battery & Battery
Charger) for DC-Powered Systems”.
Every carrier in the system must be supplied with +5 volt, -48 volt, and -5 volt DC
power for the various circuit packs to operate properly. This power is supplied to
the carriers as follows: AC from a wall outlet comes into the PDU, which
distributes the power via a set of fuses (F1 to F7) to the power units. Each carrier
in the system is equipped with two power units: the 631 DA AC power unit and the
631 DB AC power unit, which together supply the required voltages to the carrier.
Figure 10-12 illustrates the position of the power unit and the power distribution
unit (PDU) and shows which power unit each fuse controls (Figure 10-12 also
shows other Environment maintenance-related items that can be ignored for this
section on Carrier Port Power Unit). Figure 10-13 illustrates the position of the
power unit and the PDU and shows which power unit each fuse controls in a small
cabinet (from a System 75 R1V3 upgrade). Figure 10-14 shows the position of the
MO Name (in
Alarm Log)
Alarm
Level Initial Command to Run
1
1 Recycle the carrier indicated by the PORT field in the Alarm Log.
Full Name of MO
CARR-POW MAJOR recycle carrier PC Carrier Port Power Unit