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TONE-BD (Tone-Clock Circuit Pack)
Issue 4 May 2002 10-1801 555-233-123
This is not really a test, in the sense that it simply reports status held by the
system, and does not generate new information or raise alarms. If this test fails
with no error code, there is at least one Major alarm against a Tone-Clock circuit
pack. If this test fails with an error code of 1, there is at least one Minor off-board
alarm against a TDM-CLK.
Table 10-656. TEST #46 Clock Health Inquiry Test
Error
Code Test
Result Description/Recommendation
ABORT Internal System Error.
1. Retry the command at 11-minute intervals for a maximum
of 5 times.
2. If the test continues to abort, follow normal escalation
procedures.
none FAIL This Tone-Clock circuit pack had an apparent loss of clock.
One or more of error types 2049, 2305, 3834, and 3872 will
appear in the error log. Correct the problem according to the
appropriate error log entries. Once this test fails, the only way
to make it pass, and to retire the associated alarm, is to repair
the problem and to execute set tone-clock PC override
against the indicated Tone-Clock circuit pack.
NOTE:
If power is removed from a carrier in a duplicated
system, and that SPE has the active TONE-CLK, a
MAJOR alarm is raised for the TONE-BD. The
TONE-BD will be out of service and when running Test
46 (Clock Health Test) it will fail, indicating a loss of any
of these three clocks, SYSCLK, SYSFM, and
SYSDCLK.
To restore the TONE-BD to service, use set tone spe
health-override .
1 FAIL This Tone-Clock circuit pack is suspect of having a clock at
the edge of its specified frequency. A Tone-Clock circuit pack
with this problem can cause Expansion Interface circuit packs
to go out-of-frame or report no neighbor conditions, thus
causing EPNs to go down
1. Replace the Tone-Clock circuit pack identified in the error
log. Refer to the ‘‘How to Replace a Tone-Clock Circuit
Pack’’ section.
2. If the error persists, follow normal escalation procedures.
PASS This Tone-Clock circuit pack has not reported a loss of clock.
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