DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1546STRAT-3 (Stratum 3 Clock)
9
8 FAIL Reference B failed or CI ca rd B failed. This cond ition usually indicate s a failure
of the DS1 reference; however, there may also be a failure of the CI card to
which the reference is connected. The system technician dispatched to
investigate this problem should take a spare CI card in case the CI card
caused the failure. If you are NOT ON-SITE, use the following procedure:
1. If there were no DS1-BD errors, OR if all DS1-BD errors have been
resolved, enter test synchronization r 4 to determine if the alarm is still
present. If all repetitions of the tests pass, the alarm no longer exists.
Otherwise, the system technician should be dispatched with a spare CI
card to perform the following instructions on-site.
8 FAIL
(cont’d.)
If you are ON-SITE, use the following procedure:
1. Look for a red LED on a CI card B (the CI card on the right). 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, proceed to Step 3.
2. Otherwise, enter test synchronization r 4 to clear the alarm. If any test
repetitions fail, follow the procedure for those failures.
3. Enter display errors and look for DS1-BD errors. If there are any, refer to
“DS1-BD”. 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 with test synchronization r 4. If any test repetitions fail, follow
procedures for those failures.
5. Check the DS1 reference A connections to the Stratum 3 clock.
6. Determine if the alarm still exists with test synchronization r 4 to clear the
alarm. If any test repetitions fail, then follow procedures for those failures.
16 FAIL All power supplies failed.
1. Replace the failed power supp lies.
2. If battery backup for the Stratum 3 clock is not supp lied or if the battery
backup holdover time has been exceeded, then the system will be
referencing the local oscillator on the Active TN780 Tone-Clock circuit
pack until software detects that one or both power supplies has(have)
been restored (approximately 40 minutes). To speed up this restoration,
issue the test synchronization r 4 command. All tests should pass. If any
repetitions should fail, then follow the procedures for those failures. The
battery backup is located und er the Stratum 3 clock carrier.
Table 9-588. TEST #161 Looparound Test — Continued
Error
Code Test
Result Description/ Recommendation
Continued on next page