Alarms, Errors, and Troubleshooting
555-233-143
4-22
Issue 1 May 2002
Busyout and test board UUCSS long and record every test failure. When
looking at test results, consult the explanations and illustrations of the
tests, which appear at the end of this procedure.
Is
Board Not Assigned
displayed for an EXP-INTF in an EPN? If yes,
test maintenance long to release an EXP-INTF that may be held reset by
an EPN Maintenance circuit pack.
If No, did EXP-INTF test (#242) fail? If yes, replace the EXP-INTF circuit
pack and its lightwave transceiver (if present), and return to Step 4. [The
EXP-INTF test (#242) runs an on-board loop around if no lightwave
transceiver is connected to the EXP-INTF.]
If No, did SNI test (#757) fail? If yes, replace the SNI circuit pack, and
return to
of this procedure.
If No, did SNI test (#756) fail? If yes, replace the SNI circuit pack and its
lightwave transceiver (if present), and return to
.
If No, did EXP-INTF test (#240) fail? If yes, replace the EXP-INTF circuit
pack, and return to
.
If No, did Test #238 (EXP-INTF) or #989 (SNI) fail? If yes, replace the
lightwave transceivers and their fiber-optic or metallic cable, and return to
. The faulted component can be further isolated using the
Manual Loop-Back Procedure’’ on page 4-23
.
NOTE:
If a fiber out-of-frame condition exists and lightwave transceivers are
used, verify that both lightwave transceivers are the same type,
(9823a or 9823b). If not, replace one of the transceivers so that they
match. [A 9823A supports distances up to 4900 feet (1493 m), and a
9823B supports distances up to 25,000 feet (7620 m).]
If No, is a DS1 CONV administered on the fiber link? If no, follow normal
escalation procedures.
If Yes, is there an SNI-BD 513 alarmed error (display errors,
category
=
pnc)? If yes, replace cabling between the SNI circuit pack and the DS1C
circuit pack.
If the alarm persists, replace the DS1C and the SNI circuit packs, and
return to
If No, if the connected circuit pack is an EXP-INTF, did Test #238 fail?
If Yes, replace cabling between the EXP-INTF circuit pack and the DS1C
circuit pack. If Test #238 continues to fail, replace the DS1C and the
EXP-INTF circuit packs, and return to
If No, busyout and test board UUCSS long for both DS1C circuit packs,
and note every test failure or abort.
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 ...