Avaya Definity SI, Руководство по обслуживанию, Страница: 781 / 2968

Packet Bus Fault Correction
Issue 4 May 2002 9-29 555-233-123
Steps for Procedure 2:
1. Remove one or several circuit packs as appropriate, according to the
considerations presented in the previous paragraphs. Any circuit pack(s)
(whether Packet or non-Packet) that have been recently inserted should be
checked first. It is likely that such a circuit pack caused a new problem.
Keep in mind that Packet circuit packs should be checked before
non-Packet circuit packs.
If the decision is made to remove multiple circuit packs, consider working
with an entire carrier at a time to ensure a good granularity.
2. Determine if the Packet Bus fault is still present.
3. If the Packet Bus fault is still present:
■
Determine if the backplane pins in the removed circuit pack’s slot
are bent. Use the output from the Maintenance/Test standalone
mode and
Figure 9-3 on page 9-16 and Figure 9-4 on page 9-17 .
■
If the backplane pins are bent, power down the carrier (refer to the
“Removing Power” section in
Chapter 5, ‘‘Routine Maintenance
Procedures’’ , straighten or replace the pins, reinsert the circuit pack,
restore power (refer to the ‘‘Restoring Power’’ section in Chapter 5 ,
and repeat Procedure 2, beginning with Step 2, for the same circuit
pack.
!
WARNING:
If this is a High or Critical Reliability system, and if the slot is in the
Active control carrier, perform an SPE interchange before changing
the circuit pack. Follow the procedures presented in
Chapter 6,
‘‘Reliability Systems: A Maintenance Aid’’ .
■
If the backplane pins are not bent, reinsert the circuit pack(s), and
perform Procedure 2 for the next set of circuit packs.
4. If the Packet Bus fault is not present, do the following:
■
Reinsert a circuit pack. If multiple circuit packs have been removed,
reinsert the circuit packs one at a time, and repeat the following
substeps until all of the circuit packs have been reinserted.
■
Determine if the Packet Bus fault has returned.
■
If the Packet Bus fault has returned, the reinserted circuit pack is
defective. Replace the circuit pack and then continue.
■
If the Packet Bus fault does not return when all of the circuit packs
have been reinserted, the procedure is completed.
Continue with Procedure 3 if all the port circuit packs have been checked, but the
Packet Bus fault is still not resolved.