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Symptoms - Data Link Communications: Notes

IMPORTANT: The following steps must be completed before using the symptom tables.
  1. Perform the Diagnostic System Check for the subsystem exhibiting the symptoms. The subsystem diagnostic system check will identify where to begin diagnosis of the data link communication system.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to DATA LINK COMMUNICATIONS DESCRIPTION AND OPERATION  .
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