Maintenance-Object Repair Procedures
555-233-143
8-778
Issue 1 May 2002
Replacing an EI Circuit Pack— Duplicated PNC
!
WARNING:
On a system with duplicated PNC, synchronization may be provided over a
combination of active and standby components. This condition is indicated
by an OFF-BOARD WARNING alarm against TDM-CLK with error type
2305. Repairs to standby PNC in this state may disrupt service. Otherwise,
if the active PNC is functional, replacement of a standby component will not
disrupt service.
Step
Action
Explanation/Caution
1.
Enter busyout board UUCSS
UUCSS = cabinet-carrier-slot address of the
circuit pack to be replaced.
2.
Replace the circuit pack
3.
Wait for the circuit pack to reset
Red and green LEDs light and then go out.
If the red LED remains lit, see the previous
Note under
4.
Enter release board UUCSS
CAUTION: Do not busyout any EI circuit pack
after this point.
5.
Enter test alarms long clear for
category exp-intf
6.
Wait 5 minutes for SNI-BD, FIBER-LK,
and DS1 CONV-BD alarms to clear, or
enter clear firmware counters a-pnc
Step Action
Explanation/Caution
1.
Enter status pnc.
Verify that the component to be replaced is on the
standby PNC.
2.
Enter busyout pnc.
3.
Enter busyout board UUCSS.
UUCSS represents the cabinet-carrier-slot address
of the circuit pack to be replaced.
4.
Replace the circuit pack.
5.
Enter release board UUCSS.
CAUTION: Do not busyout any EI circuit pack after
this point.
6.
Enter test alarms long clear for
category exp-intf.
7.
Wait 5 minutes for SNI-BD, SNI-PEER,
FIBER-LK, and DS1 CONV alarms to
clear, or enter clear firmware
counters <a-pnc or b-pnc>.
Use the letter designation of the PNC that holds the
replaced component (the standby PNC).
8.
Enter status pnc.
If either PNC’s state of health (SOH) is not
“functional,” consult
9.
Enter release pnc.
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...