TM 10-3930-669-20 VERIFY REPAIR (1)   Set   MAIN   POWER   switch   to   ON position (TM 10-3930-669-10). (2) Set engine switch to ignition position (TM 10-3930-669-10). (3) Set top wiper switch to ON position (TM 10-3930-669-10). (4) Observe top wiper. (a)  If  top  wiper  does  not  operate, fault   not   corrected.      Perform Steps    (5)    through    (7)    below. Repeat    procedure    and    notify Supervisor. (b)    If    top    wiper    operates,    fault corrected. (5)     Set     top     wiper     switch     to     OFF position. (6) Set engine switch to off position (7)  Set  MAIN  POWER  switch  to  OFF position. 2-179