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 action8.(Cont)Bad alarmshould indicate 28 ±2 vdc. Turnidentificationmode switch to TEST/RESETcircuitry.and then to SECURE.(Cont)g.Connect negative meter lead to chassisand positive meter lead to TP1 oneach PC board, Al through A6. Ifvoltage at TP1 on any PC board is18.5 to 21 vdc, then the same vol-tage should be present on associatedA12 pin. Terminals on J11 areassociated with PC boards asfollows:J11A12CARD NO.PIN NO.PIN NO.A1-TP1 to J1-6 to J11-16 to A12-FA2-TP1 to J2-6 to J11-18 to A12-AA3-TP1 to J3-6 to J11-14 to A12-BA4-TP1 to J4-6 to J11-12 to A12-CA5-TP1 to J5-6 to J11-4 to A12-DA6-TP1 to J6-6 to J11-2 to A12-EIf voltage is not present on A12, turnoff switch S1 on power supply. Re-move PC board A11.(1) To remove PC board A11, turn offswitch S1 on top of power sup-ply. Place thumb or finger un-der board ejector on A11 andlift up until board pops out ofreceptacle at back of status pro-cessor. Then grasp PC board andpull straight out.(2) Turn on switch S1 on power sup-ply. Depress TRANSMITTERRESYNC switch S2. Waitabout 5 minutes for system tostabilize. Turn mode switchto TEST/RESET and then toSECURE.5-104
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