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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-997SW-CTL (Switch Control)
3
faulty signals from the PPN cabinet Tone-Clock circuit pack. See
TDM-CLK (TDM Bus Clock) Maintenance documentation for the
procedures needed to diagnose Tone-Clock circuit pack troubles.
e. This error indicates a loss of handshake between SW-CTL and the system
software. Look for and resolve all other SW-CTL errors. In the rare case
where no other errors are logged, but Error Type 1281 is occurring at a
high rate (more than 10 in the previous hour), escalate the problem.
A loss of handshake is caused by the Processor circuit pack. Follow these
repair steps:
1. Look for and resolve all other SW-CTL errors.
2. Look for and resolve all other PKT-CTRL errors.
3. If the error indicates a failure in the Processor circuit pack, replace
the Processor circuit pack. Boot the system up after the Processor
circuit pack has been inserted successfully into the control carrier.
4. If the error of loss of handshake persists after the replacement of
the Processor circuit pack, consider the replacement of the control
carrier. It’s possible that the backplane of the control carrier may be
defective.
Recommended Repair Kits
: Processor circuit pack (TN798) with
correct software release.
f. The Aux Data for this error is not meaningful. The 1793 errors are in-line
errors that indicate a possible problem with the interface between the
Switch Control and the processor. The receipt of these errors causes
Switch Control maintenance to run specific Switch Control tests. If there
really is a problem, the Switch Control tests usually causes other errors to
be logged. In the rare case where no other errors are logged but 1793
errors are occurring at a high rate (more than 10 in the last hour), the
Processor circuit pack should be replaced at the customer’s convenience.
g. This error indicates bad clock detection circuitry on the Processor circuit
pack. Replace the Processor circuit pack according to the control carrier
circuit pack replacement procedures.
System Technician-Demanded Tests: Descriptions
and Error Codes
Always investigate tests in the order presented in the table below when
inspecting errors in the system. By clearing error codes associated with the
Switch Control Reset Test,
for example, you may also clear errors generated from
other tests in the testing sequence.