Avaya S8700 Maintenance Manual page 416

Maintenance Object Repair Procedure
Procedure 3: Removing and Reinserting EPN
Control Circuit Packs
This procedure removes and reinserts an EPN's control circuit packs, as listed in
the table at the beginning of this section. The following circuit packs should be
tested with this procedure:
The Tone-Clock circuit pack should be the next-to-last one checked. Disruption of
traffic can be minimized by following the procedure for the standby TN570
Expansion Interface circuit pack, and then entering reset pnc interchange. The
formerly active Expansion Interface will now be standby and can be checked
without affecting the EPN's service.
For instructions, at each step in a procedure that requires the removal and/or
replacement of a circuit pack, refer to the documentation for the specific circuit
pack's MO. Server and/or PNC interchanges may be required to complete these
steps with the least amount of service disruption.
Procedure for EPN with Unduplicated PNC
1. Remove the suspected circuit pack.
2. As in Procedure 2, determine whether the backplane pins behind the
removed circuit pack's slot are bent.
3. If the backplane pins are bent, do the following:
a. Power down the control carrier as described in the previous warning
b. Straighten or replace the pins.
c. Insert the same circuit pack.
d. Turn the power back on to reboot the system or to restart the EPN.
e. Run test tdm P to determine whether the TDM-bus fault still exists.
f. If none of the TDM-bus tests fail, the procedure is complete.
g. If some of the TDM-bus tests fail, replace the suspected circuit pack,
If not:
a. Replace the circuit pack.
b. Turn the power back on to reboot the system.
4. Run test tdm P to determine whether the TDM-bus fault is still present.
8-1112 Issue 1 May 2002
statement.
and go to step 4.
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