DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1545STRAT-3 (Stratum 3 Clock)
9
1FAIL(
continued
)
If you are ON-SITE, use the following procedure:
1. Look for a red LED on CI card A (i.e., the left CI card). If there is a red LED,
then replace the CI card, if a spare is available. If no spare CI is available
on-site, proceed to Step 3. If after replacing the CI card, the red LED on
the new CI card lights also, then proceed to Step 3.
2. If a spare CI card is available, replace the suspect CI card. Otherwise,
issue the test synchronization r 4 command to clear the alarm. If any test
repetitions fail, then follow the procedure for those failures.
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, then proceed to Step 5.
4. After all DS1-BD errors have been resolved, then 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 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, then follow the
procedure for those failures.
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 sup ply with a red
LED and replace it. The power supply is located under the Stratum 3 clock
carrier.
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.
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, then follow the procedures for
those failures.
Table 9-588. TEST #161 Looparound Test — Continued
Error
Code Test
Result Description/ Recommendation
Continued on next page