TM  55-1510-221-10 NOTE Replace  any  lamp  that  does  not  illumi- nate  when  pressed.  If  none  of  the  indicat- ing   lamps   illuminate,   return   test   set   to AVUM. b.  Rotate  TEST  SEQUENCE  switch clockwise   to   TS   RESET   position.   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   MAN- UAL SYSTEM RESET switch and SYS NOT  RESET  lamp  should  then  extin- guish. 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 COMPL. 19. Press  pilot  CHAFF  DISP  switch  once,  Press copilot  CHAFF  DISP  switch  once.  On  DCP, for  each  depressing,  the  CHAFF  counter should  count  down  by  an  increment  of  one. 20. On  DCP,  set  MAN-PGRM  switch  to  PGRM position. 21. Press  any  one  of  CHAFF  DISP  switches  in aircraft.  On  DCP,  the  number  shown  on 22. 23. CHAFF  counter  should  decrease  in  accor- dance  with  the  program  set  on  the  EM. Repeatedly   press   other   CHAFF   DISPENSE switch  until  CHAFF  counter  on  DCP  reads 00. On  test  set,  observe  DISPENSE  COM- PLETE  lamp  (green)  is  illuminated  and  then perform  the  following  operations: a. Rotate   TEST   SEQUENCE   switch counter-clockwise  to  SYS  NOT  RESET position. SYS   NOT   RESET   lamp (amber)  will  illuminate. 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 counter-clockwise   to   STRAY   VOLT position.  STRAY  VOLTAGE  lamp (red)  should  not  illuminate. d.  Rotate  TEST  SEQUENCE  switch counter-clockwise   to   START/HOME position. NOTE When  the  TEST  SEQUENCE  switch  is turned   to   the   OFF   position,   the   DIS- PENSER  COMPLETE  lamp  will  extin- guish,  the  STRAY  VOLTAGE  lamp  will illuminate  and  then  will  extinguish  when the  OFF  position  is  reached. 24.  Install  safety  pins. 25. Disconnect  test  set  power  cable. 26. Remove  M-91  test  set  from  dispenser  assem- bly  and  restore  in  carrying  case  along  with the  power  cable  and  hexagonal  wrench. 27.  On  DCP,  set  ARM-SAFE  switch  to  SAFE position. 28. On  DCP,  reset  CHAFF  counter  to  30. 4-8