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see the **** making strong vibration and strange noise when lifted up (door unlocked). i can't lock the door manually with the key. it will kick back the key to home position. if i put a strong force to turn the key, it will make the same vibration and noise.
I found out the lock actuator was broken but they have nothing to do with the problem. the only thing i've done is to adjust the the **** shaft which is connecting to the joint, put it in lower position (in red circle). now it's work.