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)f. (Cont)d.If meter indicates 0 volts, replace PC boardA10.(1) To remove PC board A10, turn offswitch S1 on top of power supply.Place thumb or finger under boardejector and lift up until board popsout of receptacle at back of statusprocessor. Then grasp PC boardand pull straight out.(2) To install new PC board A10, turnboard so plastic ejector is towardtop. Align board with guides attop and bottom of status processor.Slide board straight in until it con-tacts receptacle at back of proces-sor. Then press firmly on board un-til it seats completely in receptacle.(3) Turn on switch S1 on power supply.Depress TRANSMITTER RESYNCswitch S2. Wait about 5 minutesfor system to stabilize. During5-minute stabilization period, checkpower supply. Set multimeter todc volts and connect negative leadto chassis (ground). Connect posi-tive lead to power supply, TB2-3.Meter should indicate 20 ± 1 vdc.Connect positive lead to TB2-5.Meter should indicate 5 ±0.25 vdc.Connect lead to TB2-2. Metershould indicate 28 ±2 vdc. Turnmode switch to TEST/RESET andthen to SECURE.e.If meter indicates 19 ±2 vdc at S5, terminal8, connect positive meter lead to S5,terminal 2 (green wire) and then termi-nal 9 (orange wire).5-70
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