TM  55-1510-221-10 NOTE The  quick  test  procedure  may  be  per- formed  any  time  after  alignment  State  “8“ is  reached  and  prior  to  entry  into  NAV. 1. Mode   selector   (MSU)   -   ALIGN. Observe  CDU  displays  are  illumi- nated. 2.  Data  selector  (CDU)  -  DSRTK/ STS.  Monitor  right  data  display until   state “8“    (or    lower)    is reached.  Observe  right  data  dis- play   is   ---N4,  where  “N“  is  not “9”. 3 .   A U T O - M A N   s w i t c h   ( C D U )- MAN. 4. Data  selector  -  Set  to  any  position except   DSRTK/STS. 5.    INS    -   Couple   to   flight   director and  autopilot,  as  applicable.  After performing   the   preceeding   step, observe: a. All  lights  on  MSU  -  Check illuminated. b.  All  lights  on  CDU  -  Check illuminated.  All  “8’s“  dis- played. c. HSI  -  All  angles  30°.  Cross- track  deviation  bar  one  dot right.  All  INS  flags  retracted. d. Flight  Director/Autopilot  -  A 15°   steering   command   is issued. e. Mission  Control  Panel  -  INS U P D A T E    a n d    N O    I NS UPDATE  annunciator  illu- minated. 6. CDU TEST switch - Hold depressed, and  rotate  AUTO- MAN   switch   to   AUTO.   Observe all   indications   are   as   in   step   -6- except   a   15°   left   steering   com- mand  is  issued.  On  HSI,  all  angles are  “0°"  and  cross-track  deviation bar  is  one  dot  left. 6 . 7 . 7.  CDU  TEST  switch  -  Release.  If desired,   decouple   INS.   Observe that   operation   returns   to   normal. (5.)  To  program  destinations  or  TACAN coordinates: NOTE If  latitude  and  longitude  (Geographic) coordinates  are  being  used,  skip  following procedure  (5)(a.)  and  execute  next  proce- dure   (5)(b.).   Enter   all   of   the   data   for   a given  destination  or  TACAN  before  start- ing  to  enter  data  for  another. (a.) Insertion of UTM waypoint coor- dinates: 1. 2. UTM  data  may and,   until   final reloaded. 3. 4. 5. Data  selector  -  UTM  WY PT.  Data  displays  will  indi- cate  last  coordinates  inserted into   related   waypoint. Thumbwheel  - Set to waypoint n u m b e r   t o   be loaded. NOTE be  loaded  in  any  order entry,  a  value  may  be To   load   zone   and   easting   - Press  keys  in  sequence,  start- ing  with  “E”.  Example:  Zone 16, 425 km East = E16 425. Observe  that  zone  and  east- ing   in   kilometers   appear   in the  right  data  display  as  keys are  pressed. INSERT/ADVANCE    push- button   -   Press.   Observe pushbutton   light   is   illumi- nated. To  load  northing  press  keys in  sequence, starting   with “N”  or  “S”  to  indicate  north or   south   hemisphere.   Exam- ple:  4749  km  North  =  N 4749.  Observe  that  northing kilometers  appear  in  the  left data  display  as  keys  are pressed. INSERT/ADVANCE    push- button   -   Press.   Observe pushbutton   light   remains illuminated. INSERT/ADVANCE    push- button  -  Press.  Observe  that 3-54