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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1301STRAT-3 (Stratum 3 Clock)]
10
System Technician-Demanded Tests:
Descriptions and Error Codes
Always investigate tests in the order presented in the following table when
inspecting errors in the system. By clearing error codes associated with the
Stratum 3 Clock Alarm Query Test,
for example, you may also clear errors
generated from other tests in the testing sequence.
Stratum 3 Clock Alarm Query (#649)
The Stratum 3 clock provides the system with the following six alarm indications
via the TN780 Tone-Clock circuit pack:
1. Reference A failed or CI card A failed.
2. Reference B failed or CI card B failed.
3. One power supply failed.
4. All power supplies failed.
5. One clock unit failed.
6. All clock unit(s) failed.
This test queries the Stratum 3 clock for its alarm status (through the TN780
Tone-Clock circuit pack) and reports the results of the query.
!
WARNING:
The removal of a card in the Stratum 3 clock may cause alarm(s) to be
resolved and the query test to pass. However, the removed cards should
still be replaced to restore the Stratum 3 clock to full service.
1. D = Destructive; ND = Nondestructive
Order of Investigation
Short Test
Sequence
Long
Test
Sequence D/ND
1
Stratum 3 Clock Alarm Query (#649) X X ND