If a juvenile court petition is filed that alleges that the juvenile is a juvenile as described in subdivision (1), (2), (3)(b), or (4) of section 43-247, a summons with a copy of the petition attached shall be served as provided in section 43-263 on such juvenile and his or her parent, guardian, or custodian requiring the juvenile and such parent, guardian, or custodian to appear personally at the time and place stated. When so ordered by the court, personal service shall be obtained upon such juvenile notwithstanding any other provisions of the Nebraska Juvenile Code.