TM   55-1520-240-T 1-1   FAILURE   SYMPTOM   LIST   (CONTINUED) 1-1 SYMPTOM TASK SYMPTOM TASK COPILOT’S   CANNOT   SELECT   DECLUTTER   ON   CCU CANNOT   CYCLE   THROUGH   MODES   AT PILOT’S   THRUSTER   GRIP CANNOT   CYCLE   THROUGH   DECLUTTER   AT PILOT’S   THRUSTER   GRIP PILOT’S  BRT  CONTROL  ON  THRUSTER  DOES NOT VARY DISPLAY INTENSITY PILOT’S   DIM   CONTROL   ON   THRUSTER   DOES NOT VARY DISPLAY INTENSITY CANNOT   CYCLE   THROUGH   MODES   AT COPILOTS  THRUSTER  GRIP CANNOT   CYCLE   THROUGH   DECLUTTFR   AT COPILOT’S   THRUSTER   GRIP COPILOT’S   BRT   CONTROL   ON   THRUSTER DOES NOT VARY DISPLAY INTENSITY COPILOT’S   DIM   CONTROL   ON   THRUSTER DOES NOT VARY DISPLAY INTENSITY CANNOT VARY PILOT’S DISPLAY LEFT/RIGHT CANNOT VARY PILOT’S DISPLAY UP/DOWN CANNOT VARY COPILOT’S DISPLAY LEFT/RIGHT CANNOT VARY COPILOT’S DISPLAY UP/DOWN CANNOT   CYCLE   THROUGH   PILOT’S   MODE SELECTION  AT  CCU  OR  PILOT  THRUSTER GRIP  HUD  CONTROL  SWITCH CANNOT   CYCLE   THROUGH   PILOT’S DECLUTTER  AT  CCU  OR  PILOT’S THRUSTER   GRIP   HUD   CONTROL   SWITCH CANNOT   CYCLE   THROUGH   COPILOT’S   MODE SELECTION  AT  CCU  OR  COPILOT’S THRUSTER   GRIP   HUD   CONTROL   SWITCH 16-4.12 16-4.13 16-4.14 16-4.15 16-4.16 16-4.17 16-4.18 16-4.19 16-4.20 16-4.21 16-4.22 16-4.23 16-4.24 16-4.25 16-4.26 16-4.27 CANNOT    CYCLE    THROUGH    COPILOT’S DECLUTTER   AT   CCU   OR   COPILOT’S THRUSTER   CRIP   HUD   CONTROL SWITCH NO  OR  IMPROPER  ALTITUDE  (MSL)  OR AIRSPEED    DISPLAYED NO OR IMPROPER TRIM (SLIDE BALL) DISPLAYED CHAPTER  17 EMERGENCY   EXIT   LIGHTS CHARGE INDICATOR LAMPS ON ONE OR MORE EMERGENCY EXIT LIGHTS DO NOT COME ON WHEN SWITCH IS SET TO ALARM CHARGE INDICATOR LAMPS ON ONE OR MORE EMERGENCY EXIT LIGHTS DO NOT COME ON WHEN SWITCH IS AT DISARM EMERGENCY EXIT LIGHT MAIN LAMPS COME ON WHEN  SWITCH  IS  AT  ARM EMERGENCY EXIT LIGHT MAIN LAMPS DO NOT COME ON WHEN SWITCH IS AT TEST ONE  OR  MORE  EMERGENCY  EXIT  LIGHTS  WILL NOT GO OUT WHEN SWITCH IS SET TO DISARM CHAPTER  18 GLOBAL   POSITIONING   SYSTEM GPS DISPLAY DOES NOT TURN OR VARY WITH CDU   BRT   CONTROL 16-4.28 16-4.29 16-4.30 17-1.3 17-3.3 17-1.3 17-1.3 17-1.3 18-1.4 NO MOVEMENT OF GPS RCVR TIME TOTALIZING METER GPS CDU DISPLAYS “FAIL” MESSAGE GPS   SYSTEM   TRACKS   LESS   THAN   FOUR SATELLITES AND ESTIMATED POSITION ERROR (EPE) IS NOT WITHIN LIMITS OF THE SYSTEMS FIGURE  OF  MERIT  (FM) DATA LOADER MODULE INFORMATION DOES NOT  LOAD  INTO  GPS  SYSTEM  BUT  NO  ERROR MESSAGE   APPEARS   ON   CDU KYK-13 KEY LOADING DISCREPANCIES GPS   ALERT   INDICATOR   DISCREPANCIES PILOT/COPILOT   HSI   DISCREPANCIES GPS SYSTEM WILL NOT ZEROIZE GPS SYSTEM WILL NOT RETAIN LOADED DATA AFTER   AIRCRAFT   POWER   IS   REMOVED ALTITUDE VOICE WARNING SYSTEM (RADAR    ALTIMETER ALTITUDE VOICE WARNING MESSAGE NOT AUDIBLE IN PILOT. COPILOT, OR AFT STATION/HOIST    OPERATOR’S    HEADSET    WHEN PILOT’S   RADAR   ALTIMETER   POINTER   IS   BELOW OR   ABOVE   PRESET   ALTITUDE   LIMITS ALTITUDE VOICE WARNING MESSAGE VOLUME NOES   NOT   FLUCTUATE   WHEN   PRESS-TO-TEST KNOB   IS   MOMENTARILY   DEPRESSED ALTITUDE VOICE WARNING MESSAGE IS AUDIBLE WHEN ALTITUDE POINTER IS WITHIN THE  HI/LO  SET  INDEX  ENVELOPE 18-1.5 18-1.6 18-1.7 18-1.8 18-1.9 18-1.10 18-1.11 18-1.12 18-1.13 18-2.4 18-2.5 18-2.6 SYMPTOM TASK 1-16 Change   16