Section 312.1. Issuance and service of summons

1. After a petition has been
  filed,  the  court  may cause a copy thereof and a summons to be issued,
  requiring the respondent personally  and  his  parent  or  other  person
  legally responsible for his care, or, if such legally responsible person
  is  not  available,  a  person  with  whom he resides, to appear for the
  initial appearance as defined by section  320.1  at  a  time  and  place
  named.  The  summons  shall  be signed by a judge or by the clerk of the
  court.
    2. Service of a summons and petition shall be made by  delivery  of  a
  true  copy  thereof  to  the  person summoned at least twenty-four hours
  before the time stated therein for appearance.
    3. If  after  reasonable  effort,  personal  service  as  provided  in
  subdivision  two  is  not  made,  the  court  may  at  any  stage in the
  proceedings make an order providing for service in any manner the  court
  directs.