TM 5-6350-264-14&P-9NAVELEX EE 181-AA-OMI-100/E121 DZ-204T.O. 31S9-2FSS9-1-9Table 5-1. Troubleshooting Procedures - ContinuedTroubleProbable causeCorrective action2. (Cont)e. (Cont)into outer enclosure. Route wires throughhole in rear of inner enclosure. Connectwires that run from terminal boards to con-duits. Align notch on P2 with J2 and con-nect P2 to J2. Lock metal tabs together andtighten collar on connector P2.f.Poor groundSet multimeter to ohms. Connect meter leads to each ofconnections.the following points:TB2-2 to outer enclosure;TB2-2 to TB3-3;TB2-2 to P1-3, 4, 16, 17;TB2-2 to battery negative lead.If the multimeter indicates more than 0 ohms at anyof the above points, inspect wiring for broken orloose connections, inspect plugs for bent or brokenpins, and inspect conduit for poor connections.3. No alarms.a.Shorted or bro-a.Set multimeter to dc volts. Connect positive meterken wires,lead to TB1-2 and negative meter lead to TB2-2.loose con-Ensure that an alarm condition is being presentednections, orby the Control Unit.bent pins.b.If meter indicates 5 +0.5 vdc, turn power switch S3to POWER OFF. Inspect wiring and Pi/J1 forshorts, frayed wires, bent pins, or foreign materi-al. P1-12, 13, and 24 carries 5 vdc, which isshorted to P1-25 will not allow an alarm to be re-ceived by the Audible Alarm.c.Set multimeter to ac volts. Connect leads to P1-9and P1-23. If meter indicates 12 +2 vac, inspectwiring from P1 to TB3 and T2 for broken wires,loose connections, or bent pins.d.Connect meter leads to TB3-6 and TB3-7. If meterindicates 18 ±2 vac, inspect wiring from T2 toTB3 and speaker DS1.5-20
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