Avaya S8700 Maintenance Manual page 180

Alarms, Errors, and Troubleshooting
Procedure 1: Circuit Pack Fault Detection
Procedure 1 determines whether any circuit packs that use the packet bus have
faults. For each circuit pack type in
steps. Check these circuit packs in the order presented by the flowchart shown
earlier in this discussion — unless newly inserted circuit packs are involved.
Newly added boards are the most likely cause of a problem.
1. Display errors and display alarms for the circuit pack.
2. For any errors or alarms, follow the repair actions recommended in
Chapter 8, ''Maintenance-Object Repair
3. After following the recommended repair actions, whether they succeed or
fail, determine whether the packet-bus fault is resolved. If so, you are
finished.
4. If the packet-bus fault is still present, apply this procedure to the next circuit
pack.
5. If there are no more circuit packs in the list, go to
and Reinserting Port Circuit
Table 4-8. Packet Circuit Packs
Circuit Pack Name
ISDN-BRI
Maintenance/Test
Universal DS1
Expansion Interface
Procedure 2: Removing and Reinserting Port
Circuit Packs
Procedure 2 removes and reinserts port circuit packs (purple slots) and the EI
circuit pack one or several at a time. Use Procedure 2 for each port circuit pack in
the EPN until every port circuit pack has been tried or the problem is resolved.
NOTE:
An EI circuit pack should be the last one checked since removing it
disconnects the EPN. To check an active EI in a critical-reliability system
(duplicated PNC), use reset pnc interchange to make it the standby.
Always check the standby's status before executing an interchange.
NOTE:
A Tone-Clock circuit pack should be the next-to-last one checked. (The
TN771D must be reseated after the Tone-Clock is reinstalled.) Refer to
Procedure 3 on page
circuit pack in a high- or critical-reliability system.
4-106 Issue 1 May 2002
Table 4-8
Packs.
Code Associated Maintenance Objects
TN556 BRI-BD, BRI-PORT, ABRI-PORT, BRI-SET, BRI-DAT, ASAI-ADJ
TN771D M/T-BD, M/T-PKT
TN464F UDS1-BD, ISDN-LNK
TN570 EXP-INTF
4-108 for the TN768, TN780, or TN2182 Tone-Clock
proceed through the following
Procedures''.
Procedure 2: Removing
555-233-143