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The insurance knob inside the door lock cannot be rotated?

Last Updated on：2024-08-06 06:09:06

1) Check if the door frame and the lock tongue of the insurance lock are aligned; 2) Check if the door frame and the lock tongue of the insurance lock are stuck; 3) Check if the insurance rotation dial behind the door lock is installed, whether the length is too long or too short (the length of the knob dial is recommended to exceed 2mm outside the lock body door).