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Page Title: TROUBLESHOOTING FLOWCHARTS. Continued
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TM  11-5820-890-20-2 2-120 2.2. TROUBLESHOOTING FLOWCHARTS. Continued Chart 34 NO RT-A MONITORING. CREWMEMBER'S C 2298 MONITOR SWITCH TO A. (Sheet 1 of 3) The RT in the SQ OFF position is used to provide an AC signal in the system. The variable audio will produce 3.0 to 8.0 V ac when the volume control is set full cw. Set up multimeter as an ac voltmeter. Use the 20 V range connect meter probes between test points and chassis ground. V U T S R P N M L K J H F E D C B A AM 1780 J505, J506, J507 P N M L B C D E F G H J K A NO YES 3.0 TO 8.0 V ac ? 1.   CONNECT SUSPECT CX 7060 TO AM 1780 J505 J507. 2.   REMOVE CX 7060 FROM HULL BENDIX CONNECTOR. 3.   MEASURE AC VOLTAGE AT HULL BENDIX CONNECTOR FROM PIN A TO PIN N (GND). REPLACE AM 1780. NO YES C 2297 SUSPECT ? 1 SH 2 1.   REMOVE ALL CX 4723/7060 FROM AM 1780 J504 J507. 2.   MEASURE AC VOLTAGE AT AM 1780 J505 J507, PIN M. NO YES 3.0 TO 8.0 V ac ? 2 SH 2 3 SH 3 START HULL BENDIX CONNECTOR


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