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 action7.(Cont)Bad PC board A8,standoffs on side of CU enclosure.or mode switchNote that cable clamp goes underS3. (Cont)screw on bottom front of powersupply. Insert screws and tightento secure power supply. Connectwires to TB1. Replace cover andsecure with screws. Connectwires to TB2 and TB4. Positionbattery outside CU enclosure.Carefully insert battery endfirst; turn and lower it into bot-tom of CU enclosure. Connectwires to battery terminals.Switch on main circuit breaker.(3) Turn on switch S1 on power sup-ply. Depress TRANSMITTERRESYNC switch S2. Waitabout 5 minutes for system tostabilize. During 5-minute sta-bilization period, check powersupply. Set multimeter to dcvolts and connect negative leadto chassis (ground). Connectpositive lead to power supply,TB2-3. Meter should indicate20 ±1 vdc. Connect positivelead to TB2-5. Meter shouldindicate 5 ±0.25 vdc. Connectlead to TB2-2. Meter shouldindicate 28 ±2 vdc. Turn modeswitch to TEST/RESET andthen to SECURE.m. If meter indicates 20 ±1 vdc at TB2-3,turn off switch S1 on power sup-ply. Set multimeter to ohms andconnect leads to TB2-3 and S3,terminal 2-4. Meter should indi-cate 0 ohms.n.If meter does not indicate 0 ohms, in-spect wires from TB2-3 to S3,terminal 2-4, for broken or looseconnections. Resolder any badconnections.5-99
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