Avaya S8700 Maintenance Manual page 172

Alarms, Errors, and Troubleshooting
Special Precaution Concerning the TN771D
A TN771D Maintenance/Test circuit pack must be taken to the customer site if:
The Maintenance/Test packet-bus port indicates that a packet-bus fault is
present by logging a major or minor alarm against PKT-BUS. A major
alarm is indicated in the error log by error type 513; a minor alarm is
indicated by error type 2049.
Test #572 of the PKT-BUS test sequence is the only test that fails.
This precaution is taken because certain faults of the Maintenance/Test circuit
pack can appear as a packet-bus problem. To ensure that the problem is indeed
with the packet bus, proceed through the following steps:
1. If the TN771D Maintenance/Test circuit pack is replaced during this
process, enter the test pkt P long command to determine whether the
packet bus faults have been resolved. If not, correct them by using the
procedures in the sections that follow.
2. If the Maintenance/Test circuit pack was not replaced, enter test pkt P.
Record the results (PASS/FAIL/ABORT) and error codes for Test #572.
3. Enter status port-network P. Record the information listed for PKT-BUS.
4. Busyout the Maintenance/Test circuit pack with busyout board UUCSS.
5. Replace the Maintenance/Test circuit pack with the new circuit pack.
6. Release the Maintenance/Test circuit pack with release board UUCSS.
7. Enter the test pkt P and status port-network P commands as described
in Steps 2 and 3.
8. If the data matches the previously recorded data, a packet bus problem
exists, and the original TN771D Maintenance/Test circuit pack is not
defective. Reinsert the original TN771D, and correct the packet bus
problem by using the procedures in the sections that follow.
9. If the data does not match the previously recorded data, the original
TN771D circuit pack is defective. If there are still indications of packet bus
problems, correct them by using the procedures in the following sections.
4-98 Issue 1 May 2002 555-233-143