User manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-1193STRAT-3 (Stratum 3 Clock)]
10
1
(cont’d.)
FAIL 3. Look for DS1-BD (DS1 Interface Circuit Pack) errors using the
display error command. Refer to the DS1-BD Maintenance
documentation for recommended strategy to resolve any
DS1-BD errors found. If there are no DS1-BD errors, proceed to
Step 5.
4. After all DS1-BD errors have been resolved, determine if the
alarm still exists by issuing the test synchronization r 4
command to clear the alarm. If any test repetitions fail, follow
the procedure for those failures.
5. Check the DS1 reference A connections to the Stratum 3 clock.
6. Determine if the alarm still exists by issuing the test
synchronization r 4 command to clear the alarm. If any test
repetitions fail, follow the procedure for those failures. If the
problem persists after you have performed this procedure three
times, follow normal escalation procedures.
2 FAIL One power supply failed. This error only occurs when the Stratum 3
clock has two power supplies, and one of them has failed.
However, the clock can function with one power supply.
1. Locate the failed power supply by looking for a power supply
with a red LED and replace it.
2. Determine if the alarm still exists by issuing the test
synchronization r 4 command to clear the alarm. If any test
repetitions fail, then follow the procedures for those test failures.
If the problem persists after you have performed this procedure
three times, then follow normal escalation procedures.
4 FAIL One clock unit failed.
1. Look at the Stratum 3 cabinet for a red LED on a circuit card
marked "ST3." Replace the card.
2. Determine if the alarm still exists by issuing the test
synchronization r 4 to clear the alarm. If any test repetitions
fail, follow the procedures for those failures. If the problem
persists after you have performed this procedure three times,
follow normal escalation procedures.
Table 10-412. TEST #649 Stratum 3 Clock Alarm Query — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page