Avaya Definity SI Maintenance Manual page 1162

Maintenance Object Repair Procedures
Table 10-142. TEST #127 Power Unit Query Test — Continued
Error
Code
10-376 Issue 4 May 2002
Test
Result
FAIL 4. If the replaced power unit still does not operate properly,
then a circuit pack or a defective telephone connected to a
(cont'd.)
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.
Description/Recommendation
Continued on next page
555-233-123