TM 55-1520-240-T 16-218    Change 24       16-5.9  COUNTERMEASURES DISPENSER TEST SET DOES NOT INDICATE A FIRED EXPENDABLE WHEN COPILOT’S FLARE DISP SWITCH IS PRESSED (Continued)      16-5.9 WITH COPILOT’S FLARE DISP SWITCH DEPRESSED, IS CONTINUITY PRESENT BETWEEN    300P30 PINS C AND D? DISCONNECT PLUG 300J30 FROM COPILOT’S CYCLIC STICK.  IS 28 VDC PRESENT AT PLUG PIN D? IS 28 VDC PRESENT ON DCDU PLUG 147P30 PIN 27 WHEN COPILOT’S FLARE DISP SWITCH IS DEPRESSED? REMOVE AND REPLACE FAULTY COPILOT’S CYCLIC STICK GRIP. OPEN NO. 1 EAPS/MEAPS CB PANEL. IS 28 VDC PRESENT ON CIRCUIT SIDE OF DCDU CIRCUIT BREAKER? REPAIR FAULTY WIRING BETWEEN DCDU AND COPILOT’S CYCLIC STICK GRIP. REPAIR FAULTY WIRING BETWEEN DCDU CB AND COPILOT’S CYCLIC STICK GRIP. YES REMOVE AND REPLACE DCDU. IS 28 VDC PRESENT ON BUS SIDE OF DCDU CIRCUIT BREAKER? TROUBLESHOOT NO. 1 DC BUS IAW TASK 9- 4.1. YES YES YES NO NO NO NO NO YES REMOVE AND REPLACE FAULTY DCDU CIRCUIT BREAKER. END OF TASK