TM 1-1510-224-10 e. Annunciator   System   General.      In   the   frontal view,   the   annunciator   panels   present   rows   of   small opaque  rectangular  annunciators.    Word  printing  on  the respective   indicator   identifies   the   monitored   function, situation, or fault condition, but it cannot be read until the annunciator is illuminated.  Blank annunciators (no word printing) are non-functioning annunciators.  The bulbs of all    annunciator    panels    are    tested    by    activating    the ANNUNCIATOR  TEST  switch,  located  on  the  copilot's subpanel  near  the  caution/advisory  panel.    The  system is  protected  by  the  5-ampere  circuit  breakers  placarded ANN   PWR   and    ANN   IND   on    the    overhead    circuit breaker  panel  (fig.    2-9).    The  annunciators  are  dimmed when the   MASTER  light  switch  is    ON   and   the   pilot's flight instrument lights are illuminated.  The annunciators are automatically reset to maximum brightness if: (1) Both  generators  are  not  producing  power (or turned OFF) with MASTER SWITCH ON. (2) The  INSTRUMENT PANEL  light  switch  is rotated clockwise. (3) The MASTER light switch is off. (4) The  MASTER  light  switch  is   ON  and  the PILOT INSTRUMENTS light switch is OFF. NOTE AP   EFIS   1   AND   AP   EFIS   2   IS   A PUSHBUTTON   SWITCH   ON   PILOT'S SIDE ONLY. AP015464 C Figure 2-43.  Autopilot/EFIS/Rudder Boost Remote Annunciator Panel f. Master Warning Annunciators (red). Two MASTER WARNING annunciators, one located on each side of the glareshield (fig.  2-18), are provided to alert the crew of a hazardous condition.  Any time a warning annunciator illuminates, the MASTER WARNING annunciator will flash, and will remain flashing until the MASTER WARNING annunciator is reset.  If a new condition occurs, the annunciator will be reactivated, and the applicable annunciator panel annunciator(s) will illuminate. g. Master    Caution    Annunciators    (amber).        Two MASTER  CAUTION  annunciators,  one  located  on  each side    of    the    glareshield,    adjacent    to    the     MASTER WARNING annunciator (fig.  2-18), are provided to alert the   crew   of   a   situation   requiring   the   crews   attention. Whenever a caution annunciator illuminates, the MASTER  CAUTION  annunciator  will  flash,  and  remain flashing   until   the   MASTER   CAUTION   annunciator   is reset.  If a new condition occurs, the annunciator will be reactivated     and     the     appropriate     annunciator(s)     will illuminate. h. Clocks. (1) Description.    A  digital  quartz  chronometer is  mounted  in  the  center  of  both  control  wheels  (fig.    2- 24).        Each    quartz    chronometer    is    a    five-function clock/timer     that     is     controlled     by     three     pushbutton switches, located directly below the six-digit liquid crystal display. (2) Operation.  The   MODE  button  is  pressed to   select   the   desired   mode   of   operation.      The   mode annunciator is displayed above the mode identifiers, and advances to indicate each of the following modes: LC - Local Time ZU - Zulu or Greenwich Mean Time FT - Trip or Flight Timer ET - Elapsed Time DC - Downcounter with Alarm (3) Local  time  mode  (LC).    Press  the   MODE button  to  advance  the  annunciator  to    LC.    To  set  the hour, press the   RST  button  once,  then  press  and  hold the  ADV  button  until  the  correct  hour  is  displayed.    To set minutes, press the RST button again, then press and hold the  ADV button until the correct minute is displayed. Press   the   SET   button   once   to   display   and   hold   the selected time.  Press the ST - SP button to resume clock operation and/or synchronize the display with a selected time standard. (4) Zulu or Greenwich mean time mode 2-94