Maintenance-Object Repair Procedures
555-233-143
8-1362 Issue 1 May 2002
FAIL
(cont’d)
6. Since the test still fails, the ring generator is defective.
a. If the reset button on the ring generator is out, press it in.
b. Originate calls to several analog stations on different port circuit packs in
different carriers in the affected port network.
c. If called stations ring, the fault is cleared. Proceed to Step d. If no
stations ring, replace the ring generator.
d. Rerun the test. If the test still fails, proceed to Step 7.
7. The active Tone-Clock may be faulty and incorrectly reporting the level of the
ringing voltage. Replace the active Tone-Clock, and rerun the test. See
‘‘TONE-BD (Tone-Clock Circuit)’’ on page 8-1659 for details on replacing
the Tone-Clock. Rerun the test.
FAIL
(cont’d.)
Procedure for a single-carrier cabinet system:
This failure indicates that there is no ringing voltage in the carrier where the
active Tone-Clock circuit pack resides. Other carriers may or may not have
ringing voltage.
1. If this is a duplicated system, determine the active Tone-Clock circuit pack by
issuing a status system command. Make the standby Tone-Clock circuit
pack active via the set tone-clock PC command, and rerun the test.
a. If the test passes, then the trouble is with the “new” stand by Tone-Clock
circuit pack. See ‘‘TONE-BD (Tone-Clock Circuit)’’ on page 8-1659 for
details on replacing the standby Tone-Clock circuit pack. After the circuit
pack is replaced, make this Tone-Clock active again by issuing the set
tone-clock PC command and rerun the test.
b. If the test fails, then proceed with Step 2.
2. Unseat every analog circuit pack in the cabinet that contains the active
Tone-Clock circuit pack, and rerun the test.
3. If the test passes, then the ring generator is healthy and one of the analog
circuit packs is defective. Replace the analog circuit packs one at a time,
and rerun the test to determine which circuit pack is causing the problem.
Replace the defective analog circuit pack. Rerun the test. If the test still
fails, go to Step 4.
4. Replace the WP-91153 power unit for the affected carrier, and rerun the test.
If the test still fails, go to Step 5.
5. The active Tone-Clock may be faulty and incorrectly reporting the level of the
ringing voltage. Replace the active Tone-Clock, and rerun the test. See
‘‘TONE-BD (Tone-Clock Circuit)’’ on page 8-1659 for details on replacing
the active Tone-Clock circuit pack. Rerun the test.
PASS The analog ringing voltage level is acceptable. For a single-carrier cabinet stack,
ringing voltage is acceptable in the cabinet containing the active Tone-Clock
circuit pack.
Table 8-554. Test #118 Analog Ring Generator Query Test — Continued
Error
Code
Test
Result Description / Recommendation
Continued on next page
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