DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Alarms, Errors, and Troubleshooting
5-106Packet Bus Fault Isolation and Repair
5
b. Insert the same circuit pack.
5. If the backplane pins are not bent:
a. Replace the circuit pack (reinsert the old one if a replacement is not
available).
6. Turn the power back and allow the system to reboot. This may take up to
12 minutes. Log in at the terminal.
7. Determine if the packet bus fault is still present. If not, you are finished.
If the problem is still present,
a. If the old circuit pack was reinserted in Step 5, replace the circuit pack,
and repeat Procedure 3.
b. If the circuit pack was replaced in Step 5, repeat Procedure 3 for the next
SPE circuit pack.
If Procedure 3 fails to identify the cause of the problem, go to Procedure 4.
For a system with duplicated SPEs:
1. For SPE circuit packs, follow the
‘‘Replacing Circuit Packs on a Duplicated
SPE: Lock-and-Power-Down’’ procedure within the
‘‘Replacing SPE Circuit
Packs’’ section to remove and replace the circuit pack.
2. To remove an EPN Tone/Clock circuit pack, use
set tone-clock
if
necessary to make the suspect circuit pack the standby. (Always check
the status of the standby Tone/Clock with
status port network
before
executing an interchange.)
3. Determine if the backplane pins in the removed circuit pack’s slot are
bent.
4. If the pins are bent:
a. Power down the carrier if it is not already.
b. Straighten or replace the pins.
c. Insert the same circuit pack.
d. Restore power to the carrier.
5. If the backplane pins are not bent:
Insert or replace the circuit pack.
6. Determine if the packet bus fault is still present. If not you are finished.
7. If the packet bus fault is still present, do the following:
a. If the old circuit pack was reinserted in Step 5, replace the circuit
pack and repeat Procedure 3 starting at Step 2.
b. If the circuit pack was replaced with a new one, proceed with the
next step.
