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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-261CARR-POW (Carrier Port Power Unit) for AC-Powered Systems
10
FAIL
(cont’d.)
4. If the replaced power unit still does not operate properly, then a circuit
pack or a defective telephone connected to a circuit pack in the
affected carrier may be causing an electrical load which is preventing
the power unit from operating properly. Unseat all the circuit packs in
the carrier and reissue the recycle carrier command.
a. If the recycle passes, then the power units are healthy, and the
problem is with one of the circuit packs. Reinsert the circuit packs
one at a time. If the status LED shows red after reinserting a circuit
pack, replace the defective circuit pack. If the status LED still
shows red, remove the Amphenol. connector on the back of the
slot containing this circuit pack and reissue the recycle carrier
command. If the status LED shows green, the problem is with one
of the telephones or the wiring to one of the telephones on this slot.
If the status LED still shows red, escalate the problem.
b. If either power unit still shows a red status LED, check for bent pins
and cable placement in the affected carrier. There are failures that
can occur on the Maintenance/Tape Processor, Duplication
Interface, and EPN Maintenance circuit pack that are not detected
by the respective maintenance, but that cause many, if not all,
environment tests to fail. If many environment tests are failing, the
suspect circuit pack, depending on the system configuration,
should be replaced and the test rerun. If no other problems can be
found, escalate the problem.
PASS Both power units in the tested carrier were found to be healthy by the
Maintenance/Tape Processor in Standard system PPN, the Duplication
Interface circuit pack in a PPN for a system with High or Critical Reliability,
or the EPN Maintenance circuit pack in an EPN multicarrier cabinet
system. If the status LEDs on both power units are not showing green, the
PR-MAINT (Maintenance/Tape Processor), DUPINT (Duplication Interface)
circuit pack, or the EPN MAINT (Maintenance) circuit pack may have
incorrectly reported the state of the power units. Look for and resolve any
alarms on these MOs.
Table 10-88. TEST #127 Power Unit Query Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page