TM 55-1520-240-T SYMPTOM TASK ENG CHIP DET CAPSULE DOES NOT COME ON AND EN- GINE CHIP DETECTOR INDICATOR DOES NOT CHANGE DIS- PLAY WHEN DETECTOR SHORTED 4-7.3 NO. 1 AND NO. 2 ENGINE CHIP DETECTOR INDICATOR DIS- PLAY IS ALL BLACK WHEN GND SWITCH SET TO TEST 4-7.3 SYMPTOM TASK DECU CODE F AFTER POWER ASSURANCE TEST 4-8.1 ENG FAIL WARNING NOT SHOWN (12 SECONDS ON) DUR- ING ENGINE SHUTDOWN OR WHEN ENG PRI REV SWITCH SET TO PRI 4-8.1 ENG FAIL WARNING STAYS ON 4-8.1 SYMPTOM TASK FADEC NO. 1 START & IGN CIRCUIT BREAKER DOES NOT STAY CLOSED 4-10.4 FADEC NO. 2 START & IGN CIRCUIT BREAKER DOES NOT STAY CLOSED 4-10.4 NO. 1 ENGINE DOES NOT MOTOR OR N1 GAUGE DOES NOT REACH 10% 4-10.4 SYMPTOM TASK DECU CODE 10 TO 18 4-12.4 DECU CODE 1B AND 1C 4-12.4 ENGINE ACCESSORY GEARBOX CHIP DETECTORS (WITHOUT  74 ) SYMPTOM TASK NO. 1 ENG CHIP DET CAPSULE DOES NOT COME ON WHEN GND SWITCH SET TO TEST 4-7.3 NO. 1 OR NO. 2 ENGINE CHIP DETECTOR INDICATOR DIS- PLAYS BLACK-AND-WHITE FAN, ENG CHIP DET CAPSULE OUT 4-7.3 ENGINE PERFORMANCE CHECK (WITH 74 ) SYMPTOM TASK ENGINE OVERSPEED TEST FAILS 4-8.1 FADEC REV MODE INOPERATIVE 4-8.1 PTIT'S NOT MATCHED WITH LOAD SHARE SWITCH SET TO PTIT 4-8.1 ENGINE LOW OIL LEVEL WARNING SYSTEM (WITH 74 ) SYMPTOM TASK ENG1 OIL LVL LO CAUTION LIGHTS DO NOT COME ON 4-9.3 ENG2 OIL LVL LO CAUTION LIGHTS DO NOT COME ON 4-9.3 ENGINE START AND IGNITION SYSTEM (WITH  74 ) SYMPTOM TASK NO. 1 ENGINE DOES NOT START (ENGINE FUEL SYSTEM FAILURE) 4-10.4 NO. 1 ENGINE DOES NOT START (ENGINE IGNITION SYS- TEM FAILURE) 4-10.4 NO. 1 ENGINE MOTORS NORMALLY BUT DOES NOT START 4-10.4 GAS PRODUCER CONTROL SYSTEM (N1) (WITH 74 ) SYMPTOM TASK DECU CODE IS A5 AND/OR B6 4-11.3 FADEC (WITH 74 ) SYMPTOM TASK DECU CODE 1E AND 1F 4-12.4 DECU CODE Al TO A7 4-12.4 SYMPTOM TASK NO. 1 OR NO. 2 ENG CHIP DET CAPSULE IS LIT 4-7.3 NO. 2 ENG CHIP DET CAPSULE DOES NOT COME ON WHEN GND SWITCH SET TO TEST 4-7.3 SYMPTOM TASK FADEC TOGGLES BETWEEN PRIMARY AND REVERSIONARY MODE 4-8.1 TORQUES NOT MATCHED WITH LOAD SHARE SWITCH AT TRQ 4-8.1 SYMPTOM TASK NO. 2 ENGINE DOES NOT MOTOR OR N1 GAUGE DOES NOT REACH 10% 4-10.4 NO. 2 ENGINE DOES NOT START (ENGINE FUEL SYSTEM FAILURE) 4-10.4 NO. 2 ENGINE DOES NOT START (ENGINE IGNITION SYS- TEM FAILURE) 4-10.4 NO. 2 ENGINE MOTORS NORMALLY BUT DOES NOT START 4-10.4 SYMPTOM TASK DECU CODE B2 TO B9 4-12.4 DECU CODE BA AND BC 4-12.4 Change 17  4-2.3