TM 5-6350-264-14&P-10NAVELEX EE 181-AA-OMI-110/E121 C-9412T.O. 31S9-2FSS9-1-10Table 5-2. Troubleshooting Procedures - ContinuedTroubleProbable causeCorrective action1.(Cont)c.(Cont)f.Turn on switch S1 on power supply. De-press TRANSMITTER RESYNC switch82. Wait about 5 minutes for system tostabilize. During 5-minute stabilizationperiod, check power supply. Set multi-meter to dc volts and connect negativelead to chassis (ground). Connect posi-tive lead to power supply, TB2-3. Metershould indicate 20 +1 vdc. Connect posi-tive lead to TB2-5. Meter should indicate5 +0.25 vdc. Connect positive lead toTB2-2. Meter should indicate 28 +2 vdc.Turn mode switch to TEST/RESET andthen to SECURE.d.Incorrect sup-a.Set multimeter to dc volts and connectply voltagepositive meter lead to PC board A10,or bad tamperTP1 (brown), and negative lead to chas-circuitry.sis (ground). Turn mode switch to SE-CURE and ensure that no alarms are acti-vated. Meter should indicate 18.5 to 21vdc.b.If meter indicates less than 1 vdc, turnmode switch to ACCESS. Connect posi-tive meter lead to power supply TB2-3.Meter should indicate 20 + 1 vdc. Connectpositive meter lead to TB2-5. Meter,should indicate 5 +0.25 vdc. Connectpositive meter lead to TB2-2. Metershould indicate 28 +2 vdc.c.If any of these indications are not cor-rect, turn off switch S1 on power supply.Check wiring for poor or loose connec-tions, broken wires, or frayed insulation.Repair or replace any bad wiring.d.If wiring is good, replace power supply.(1)To remove power supply, pullmain circuit breaker to remove120 vac from CU. Disconnectwires from battery. As battery isheavy, lift and turn it to removefrom bottom of CU enclosure.Tag and disconnect wires from TB25-19
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