TM 55-1510-219-10 NOTE Replace  any  lamp  that  does  not illuminate  when  pressed.    If  none of the indicating lamps illuminate, return test set to AVUM. b. Rotate            TEST            SEQUENCE switch clockwise to the next position,   TS   RESET.      No   visual indication will occur. c. Rotate            TEST            SEQUENCE switch clockwise to SV SELF TEST position.   STRAY   VOLTAGE   lamp (red) will illuminate. d. Rotate            TEST            SEQUENCE switch   clockwise   to   next   position, TS RESET. STRAY VOLTAGE lamp (red) will extinguish. e. Rotate            TEST            SEQUENCE switch   clockwise   to   next   position, STRAY  VOLT.    STRAY  VOLTAGE lamp (red) should not illuminate. f. Rotate            TEST            SEQUENCE switch   clockwise   to   next   position, SYS    NOT    RESET.        SYS    NOT RESET   lamp   (amber)   should   not illuminate.        If    lamp    illuminates, press and release MANUAL SYSTEM  RESET  switch  and  SYS NOT    RESET    lamp    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   DISP   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 lamp (green) on test set will illuminate. 14. Perform  the  following  operations  on    the  M-91 test set: a. Rotate          TEST               SEQUENCE switch    counter-clockwise    to    SYS NOT  RESET  position.    SYS  NOT RESET lamp (amber) will illuminate. DISPENSER COMPLETE lamp (green) will remain illuminated. b. Press and release MANUAL SYSTEM RESET switch.  SYS NOT RESET lamp (amber) will 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. c. Rotate          TEST               SEQUENCE switch  counterclockwise  to  STRAY VOLT  position.    STRAY  VOLTAGE lamp (red) should not illuminate. d. Rotate          TEST               SEQUENCE switch counterclockwise to START/HOME position. NOTE When the TEST SEQUENCE switch is turned to the START/HOME position, the DISPENSER COMPLETE lamp will extinguish,  the  STRAY  VOLTAGE lamp  will  illuminate  and  then  will extinguish  when  passing  through the TS RESET position. 15. On CHAFF dispenser assembly, assure that C-F selector switch is in C (chaff) position. 16. Remove    M-91    test    set    from    first    dispenser assembly. 17. Connect  M-91  test  set  to  breech  assembly  of second    dispenser    assembly.        Secure    both mounting  studs  uniformly  hand  tight  using  ball hexagonal  key  screwdriver  provided  in  test  set carrying case. 4-7