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,(6) If meter indication is correct, turnor mode switchoff switch S1 on power sup-S3. (Cont)ply. Set meter to ohms andconnect leads to TB2-2 andJ8-18. Meter should indicate0 ohms.(7) If meter does not indicate 0 ohms,inspect wires from TB2-2 toJ12/P1 pin 26 to J8-18 forbroken, loose, or bad connec-tions on P1.f.If meter indicates 28 ±2 vdc at J8-18,connect positive meter lead toJ8-16 and negative lead to chassis.Meter should indicate 18.5 to 21vdc.(1) If meter indication is correct, re-place PC board A8.(2) To install new PC board A8, turnboard so plastic ejector is to-ward top. Align board withguides at top and bottom ofstatus processor. Slide boardstraight in until it contacts re-ceptacle at back of processor.Then press firmly on boarduntil it seats completely in re-ceptacle.(3) Turn on switch S1 on power sup-ply. Depress TRANSMITTERRESYNC switch S2. Waitabout 5 minutes for systemto stabilize. Turn mode switchto TEST/RESET and then toSECURE.g.If meter does not indicate 18.5 to 21 vdcat J8-16, connect positive meterlead to mode switch S3, terminal2-1 and negative meter lead tochassis. Meter should indicate20 ±2 vdc.5-96
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