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 action4. (Cont)d. (Cont)for system to stabilize. Turn modeswitch to TEST/RESET and thento SECURE.m. If meter indicates less than 1 vdc at J10-7,replace PC board A10.(1) To install new PC board A10, turn offswitch S1 on top of power supply,turn board so plastic ejector is to-ward top. Align board with guidesat top and bottom of status proces-sor. Slide board straight in until itcontacts receptacle at back of pro-cessor. Then press firmly on boarduntil it seats completely in recept-acle.(2) Turn on switch S1 on power supply.Depress TRANSMITTER RESYNCswitch S2. Wait about 5 minutesfor system to stabilize. Turn modeswitch to TEST/RESET and thento SECURE.n.Set mode switch to ACCESS. Set multi-meter to dc volts and connect positivelead to PC board A1-TP1 (brown), andnegative lead to chassis (ground).o.If meter indicates less than 1 vdc, connectpositive meter lead to mode switch(S3), terminal 2-1. Meter should indi-cate 20 ± 1 vdc.p.If meter indicates less than 0.5 vdc, replacemode switch.(1) To remove mode switch, turn offswitch S1 on top of power supply.Remove large hex nut that securesswitch mounting bracket to insideof CU door. Remove switch andmounting bracket together. Becareful not to lose switch arm be-cause it is not secured to switchshaft. Remove spacer and lock5-61
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