TM 1-1510-225-10 3C-55 Press the   MENU  button  to  return  to  the  main menu. (4)   Checklist Mode. With specialized equipment,  the  system  can  be  custom  programmed with up to six separate checklists.  Each checklist has a capacity of 30 lines with up to 20 characters per line.   One   of   these   symbols   will   display   in   front   of   each checklist item on the system display.    Item yet to be acted upon 3   Item checked • Item skipped Checklist steps performed are stored in memory so  the  checklist  mode  can  be  exited  and  the  same position returned to later. The  checklist  mode  can  only  be  selected  from the   main   menu   by   highlighting   CHECKLISTS   and pressing the GO button.  When selected, the checklist menu will highlight the first of six checklists programmed.  To select a checklist other than the one highlighted,  press  the   NEXT  button  until  the  desired checklist is highlighted.  Then press the   GO button to display  the  items  contained  in  that  specific  checklist.   The first unchecked item in each checklist will always appear   highlighted.      After   the   highlighted   item   has been accomplished, press the CHECK button.  The list will  scroll  up  so  the  next  item  on the checklist will be highlighted     and     a 3   will     display     next     to     the accomplished item.  Refer to Figure 3C-24. Figure 3C-24.  Checklist Mode To skip an item on the checklist without checking it, press the  SKIP button.  The list will scroll up so the next item will be highlighted and a large dot will display next to the skipped item.  All skipped items will display again at the end of the checklist display program.  To review  the  checklist  at  any  time  scroll  backward  with the  BACKUP  button.    The  last  item  on  each  of  the checklists    is    followed    by    the    message    END    OF CHECKLIST.    After  all  items  have  been  checked  a confirmation   message   CHECKLIST   COMPLETE   will display  and  all  button  legends  will  disappear  except MENU. NOTE The date is set before the time. (5)   Time/date  Mode.  The   TIME/DATE mode can   be   selected   only   from   the   main   menu.      The time/date     menu     displays     four     items:     stopwatch, elapsed time, time of day, and day, month, and year.   When first selecting the time/date mode, the stopwatch digits   will   be   highlighted.      To   use   the   stopwatch function,   press   the   START  button  to  start  or  stop.   Pressing the  RESET button will immediately reset the timer.    To  use  the  elapsed  time  feature,  press  the NEXT   button   to   highlight   the   elapsed   time   digits.   Refer  to  Figure  3C-25.    Press  the   START  button  to start or stop the counter.  Pressing the   RESET button will reset the elapsed timer. Figure 3C-25.  Time/Date Mode To set the current date or the correct time, press the  NEXT button to highlight the digits to be changed.   Press the  UP or  DOWN button to set the digits to the proper   value.      When   either   the   time   or   date   are highlighted, the    RESET   and  START  button  legends are replaced with UP and DOWN. (6)   Options  Mode.     The  options  mode  can only  be  selected  from  the  main  menu.    The  system continuously  self-tests  many  functions.    Results  are indicated   by   CONTINUOUS   TEST:   OK   or   FAULT. CONTINUOUS  TEST.    OK  indicates  that  all  internal self-test   items   have   been   operating   properly.      The