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 action1. (Cont)b.Defectivea.Turn on switch S3 on power supply. Set multimeterelectronicsto dc volts. Connect positive meter lead to TB2-1assemblyand negative meter lead TB2-2. Meter should in-or powerdicate less than 1 vdc.transformer.b.If meter indicates 1 vdc or more replace the elec-tronics assembly.CAUTIONInner enclosure is heavy. Use caution when removingfrom outer enclosure.(1)To remove electronics assembly, loosen collar onconnector P2. Turn metal tab 90 degrees anddisconnect P2 from J2. Tag and disconnect wires thatrun from terminal boards to conduit. Slide the innerenclosure out of the outer enclosure. Place innerenclosure on bench. Remove screws, lock washers, andwashers and disconnect connector J1 from P1. Removemounting screws from rear of inner enclosure andremove electronics assembly.(2)To install new electronics assembly, position assemblyon inner enclosure. Install mounting screws through rearof inner enclosure. Connect J1 to P1 and install screws,lock washers, and washers. Slide inner enclosure intoouter enclosure. Route wires through hole in rear ofinner enclosure. Connect wires that run from terminalboards to conduits. Align notch on P2 with J2 andconnect P2 to J2. Lock metal tabs together and tightencollar on connector P2.c.Set multimeter to dc volts. Connect positive meter lead toTB2-3 and negative meter lead to TB2-2. Meter shouldindicate 5 i0.5 vdc.d.If meter indicates less than 1 vdc, connect positive meterlead to P1-13 and negative meter lead to TB2-2.5-7
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