TM 55-1510-222-10 5. Remove  safety  pins  from  EM,  and  on  the  top skin of the right wing. CAUTION On   DCP,   ensure   that   RIPPLE   FIRE switch guard is in down position. 6. Provide  aircraft  power  to  DCP  by  resetting  the M-130 POWER circuit breaker. 7. On DCP, press ARM annunciator.  Annunciator will    illuminate.        Release    ARM    annunciator. Annunciator will extinguish. 8. On   DCP,   set   FLARE   counter   to   30,   CHAFF counter to 30 and MAN-PGRM switch to MAN position. 9. On DCP, set ARM-SAFE switch to ARM.  ARM annunciator will illuminate. NOTE • When  the  test  set  is  installed  on the    dispenser    assembly    and    28 volts  DC  aircraft  power  has  been applied, the sequencer switch inside of dispenser assembly resets, making an audible sound as it  rotates.    There  will  be  no  such sound if the sequencer switch has been  previously  reset  or  if  switch is in position 12 or 24. • On test set, TS PWR ON annunciator  (clear)  illuminates  and remains illuminated throughout the test  sequence  until  aircraft  power to test set (via test set power cable) is disconnected or shut off. 10.  Set mission chaff program on EM. 11.  Perform  the  following  operations  on  the  M-91 test set: a. Press to test the remaining three annunciators    on    test    set.        Each    annunciator    will illuminate. NOTE Replace   any   annunciator   that   does not illuminate when pressed.  If none of the indicating annunciators illuminate, return test set to AVUM. b. Rotate TEST SEQUENCE switch clockwise to   the   TS   RESET   position.      No   visual indication will occur. c. Rotate TEST SEQUENCE switch clockwise to    SV    SELF    TEST    position.        STRAY VOLTAGE annunciator (red) will illuminate. d. Rotate TEST SEQUENCE switch clockwise to  TS  RESET  position.    STRAY  VOLTAGE annunciator (red) will extinguish. e. Rotate TEST SEQUENCE switch clockwise to STRAY VOLT position. STRAY VOLTAGE    annunciator    (red)    should    not illuminate. f. Rotate TEST SEQUENCE switch clockwise to  SYS  NOT  RESET  position.    SYS  NOT RESET    annunciator    (amber)    should    not illuminate.  If annunciator illuminates, press and    release    MANUAL    SYSTEM    RESET switch  and  SYS  NOT  RESET  annunciator should then extinguish. NOTE When  the  MANUAL  SYSTEM  RESET switch  is  pressed  and  released,  and 28 volts DC power has been applied, the    sequencer    switch    inside    the dispenser   assembly   resets,   making an audible sound as it rotates.  If the sequencer switch has been previously reset or if the switch is in position  12  or  24,  there  will  be  no such sound. g. Rotate TEST SEQUENCE switch clockwise to next position, DISP COMP. 12.  Press   FLARE   DISPENSE   switch   once.      For each  depressing,  the  FLARE  counter  on  DCP should count down in groups of three. 13.  On  DCP,  raise  RIPPLE  FIRE  switch  guard  and set   toggle   switch   to   up   position   until   FLARE counter counts down to 00.  Return switch guard to    down    position.        On    DCP,    reset    FLARE counter  back  to  30.    DISPENSER  COMPLETE annunciator (green) on test set will illuminate. 14.  Perform  the  following  operations  on  the  M-91 test set: a. Rotate TEST SEQUENCE switch counterclockwise     to     SYS     NOT     RESET position.      SYS   NOT   RESET   annunciator (amber) will illuminate. DISPENSER COMPLETE annunciator (green) will remain illuminated. b. Press     and     release     MANUAL     SYSTEM RESET switch. SYS NOT RESET annunciator (amber) will extinguish. NOTE When  the  MANUAL  SYSTEM  RESET switch  is  pressed  and  released,  and 28  volts  DC  power  is  being  applied, the    sequencer    switch    inside    the dispenser 4-6