Avaya Definity SI Maintenance Manual page 1156

Maintenance Object Repair Procedures
Replacing a TN736 or TN752 Power Unit Circuit
Pack
If the TN736 or TN752 power unit circuit pack is in a control carrier of a PPN
system, then refer to the
''Routine Maintenance
volt supply to the carrier. This causes all the analog circuit packs in the carrier to
fail their Loop Around Tests and may cause failures in circuit packs in the control
complex. After the power unit has been replaced, look for alarms against these
maintenance objects. If ANL-LINE alarms exist, refer to Test #47 (Loop Around
and Conference Test) in ANL-LINE Maintenance documentation. For CO-TRK
alarms, refer to Test #33 (Loop Around and Conference Test) in CO-TRK
Maintenance documentation.
Hardware Error Log Entries and Test to Clear
Values
Error Aux
Type Data
1
0 0 Any
1(a)(b) 0 or 1 Power Unit Query Test
(#127)
1 Run the Short Test Sequence first. If all tests pass, run the Long Test Sequence. Refer to the
appropriate test description and follow the recommended procedures.
Notes:
a. Where P is an appropriate port network number taken for the PORT field of
the Error Log.
b. Run the Power Unit Query Test (#127) first using the test environment P r
2 command. Then, if a carrier must be recycled to clear the CARR-POW
alarm, use the recycle carrier PC command to run the Power Unit Recycle
Test (#126). The Power Unit Recycle Test (#126) is not included in either
the long or Short Test Sequences.
!
10-370 Issue 4 May 2002
''Handling Control Circuit Packs''
Procedures''. Replacing either power unit interrupts the -5
Carrier Port Power Unit Error Log Entries
Associated Test
WARNING:
The Power Unit Recycle Test (#126) is destructive. For more
information, refer to the description of this test.
Alarm On/Off
Level Board
Any Any test environment P sh r 1
MAJOR ON test environment P r 2
section in Chapter 5,
Test to Clear Value
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