LEVI serial port self-test Jul 27, 2018 6:37:38 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by WECON Support on Jul 27, 2018 6:37:38 GMT When you suspect the serial port of levi hmi is damaged, follow the step to check it. drive.google.com/open?id=1YN_QfRjeRvauUpf8S5tNcIp9YX9p-zn7