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 action2. (Cont)d. (Cont)m.If meter indicates 20 +1 vdc at TB2-3, turnoff switch S1 on power supply. Setmultimeter to ohms and connect leadsto TB2-3 and S3, terminal 2-4. Metershould indicate 0 ohms.n.If meter does not indicate 0 ohms, inspectwires from TB2-3 to S3, terminal 2-4for broken or loose connections. Re-solder any bad connections.o.To reinstall PC board A8, turn off switch S1on top of power supply, turn board soplastic ejector is toward top. Alignboard with guides at top and bottom ofstatus processor. Slide board straightin until it contacts receptacle at backof processor. Then press firmly onboard until it seats completely in re-ceptacle.p.Turn on switch S1 on power supply. De-press TRANSMITTER RESYNC switchS2. Wait about 5 minutes for system tostabilize. Turn mode switch to TEST/RESET and then to SECURE.e. Bad Pca.Remove PC board A10.board A10.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.b.Turn on switch S1 on power supply. De-press TRANSMITTER RESYNC switchS2. Wait about 5 minutes for system tostabilize. During 5-minute stabilizationperiod, check power supply. Set multi-meter to dc volts and connect negativelead to chassis (ground). Connect posi-tive lead to power supply, TB2-3. Metershould indicate 20 i1 vdc. Connectpositive lead to TB2-5. Meter should5-47
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