Avaya Definity SI, Maintenance Manual, Page: 783 / 2968

Packet Bus Fault Correction
Issue 4 May 2002 9-31 555-233-123
If Procedure 3 fails to identify the cause of the problem, go to Procedure 4.
In a High or Critical Reliability System, do the following:
1. If the circuit pack to be replaced is in the SPE, perform an SPE interchange
by entering the reset system interchange command. For an Expansion
Interface circuit pack, enter the set exp-link command to switch to the
standby expansion link. For a Tone-Clock circuit pack, enter the set
tone-clock command to switch to the standby Tone-Clock circuit pack.
2. Remove the newly-inactive suspect circuit pack. For a circuit pack in the
processor complex, use the procedures in Chapter 6, ‘‘Reliability Systems:
A Maintenance Aid’’ .
3. As in Procedure 2, determine if the backplane pins in the removed circuit
pack’s slot are bent.
4. If the pins are bent, do the following:
a. Power down the carrier. Refer to the ‘‘Removing Power’’ section in
Chapter 5, ‘‘Routine Maintenance Procedures’’ .
b. Straighten or replace the pins.
c. Insert the same circuit pack.
d. Restore power to the carrier. Refer to the ‘‘Restoring Power’’ section
in Chapter 5, ‘‘Routine Maintenance Procedures’’ .
5. If the backplane pins are not bent, insert or replace the circuit pack.
6. Determine if the Packet Bus fault is still present.
7. If the Packet Bus fault is still present, do the following:
a. If the circuit pack was reinserted in Step 5, replace the circuit pack.
Then repeat Procedure 3, starting at Step 2.
b. If the circuit pack was replaced in Step 5, continue with Step 9.
8. If the Packet Bus fault does not recur, then the procedure is completed.
9. If the suspect circuit pack has been tested in the other control carrier, go to
Step 10. Otherwise, implement Step 1, then Steps 2 through 8.
10. Repeat the procedure in the previous step for the next suspect circuit pack.
If all processor complex circuit packs have been checked and the problem is not
resolved, continue with Procedure 4.