TM 1-1510-225-10 3A-96 (3)   Tuning NAV Radios By Keyboard Method If Station Frequency Is Used. 1.   TUNE  key   –   Press   until   Navigation Radio Tune page 1 is displayed. 2.   Line   select   key   –   Press   to   position cursor over desired FREQ field. 3.   Frequency – Insert or verify. NOTE Trailing zeroes are not required. 4.   ENTER key – Press. NOTE (MAN) adjacent to the FREQ field indicates that     the     frequency     has     been     entered manually from the NAV control head. 5.   Frequency  –  Verify  that  control  head display is tuned to the desired frequency.          When     the     station     is located  in  the  database  the  identifier will    be    displayed    and    the    (KEY) annunciation  will  shift  to  the  identifier line. 6.   RANGE and BRG – Check. (4)   Tuning     NAV     Radios     By     Auto     Tune Method. NOTE DME    hold,    manual    control    unit    tuning, keyboard tuning, or use of the AUTO / MAN switch   will   take   the   flight   management system out of the auto tune mode. Only NAV/DME radios may be placed in the AUTO TUNE mode. 1.   TUNE   key    –   Press   to   display   the Navigation Radio Tune page. 2.   Line   select   key    –    Press    to    place cursor  over  IDENT  or  FREQ  field  in NAV 1 or 2. 3.   BACK    key     –    Press.        AUTO?    is displayed in place of (KEY) or (MAN). 4.   ENTER key  –  Press  to  place  system in  AUTO  TUNE  mode.    After  a  brief pause the CRT information will change to reflect the identifier chosen by the system. NOTE No   prompt   is   displayed   adjacent   to   the IDENT field when system is in AUTO TUNE mode. 5.   FREQ,   RANGE,   and   BRG   –   Check that  the  frequency  of  the  control  unit and  CDU display agree and that range and bearing are reasonable. (5)   Transponder And ADF Keyboard Tune. NOTE (MAN)  adjacent  to  ADF  or  XPDR  indicates that    the    frequency    or    code    has    been entered manually from the control unit. 1.   TUNE key  – Press to display the page with XPDR and ADF. 2.   Line select key – Press to position the cursor    over    the    desired    code    or frequency field. 3.   Code or frequency  –  Insert  and  verify new value. 4.   ENTER key  –  Press.    (MAN)  field  will disappear indicating radios have been keyboard tuned.  Verify that the code or frequency changes on CDU (frequency  only  will  appear  for  a  few seconds  before  going  to  dashes)  and control head displays. w.  Planning Procedures.  (1)   Fuel Planning.  Refer to Figure 3A-64. Figure 3A-64.  Fuel Status Page