K&R ACD320 Series - Communication Failure; Current Inspection Circuit Failure; Motor Self-Learning Failure; EEPROM Read-Write Failure

ACD320user manual Fault Diagnosis and countermeasures
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15.Communication Failure
（
U-16
）
16.Current Inspection Circuit Failure
（
U-18
）
17.Motor self-learning failure
（
U-19
）
18.EEPROM read-write failure(U-21)
Table7-2 failure phenomenon and analysis