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 action5. (Cont)b. (Cont)to power supply, TB2-3. Metershould indicate 20 ± 1 vdc. Con-nect 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/RESETand then to SECURE.e.If meter does not indicate less than 2,000ohms, set multimeter to dc voltsand connect positive meter lead tomode switch S3, terminal 2-2 andnegative meter lead chassis. Turnmode switch to ACCESS.f.If meter indicates 0 volts, replace modeswitch.g.Connect positive meter lead to S3,ter-minal 2-1 and negative meter leadto chassis. Turn mode switch toTEST/RESET.h.If meter indicates 0 volts, replace modeswitch.(1) To remove mode switch, turn offswitch S1 on top of power sup-ply. Remove large hex nut thatsecures switch mounting brac-ket to inside of CU door. Re-move switch and mounting brac-ket together. Be careful not tolose switch arm because it isnot secured to switch shaft. Re-move spacer and lock from doorso no items will be lost. Re-move small hex nut and lockwasher that secures mountingbracket and switch stop toswitch shaft. Remove mount-ing bracket and switch stop.Note that mode switch is a threedeck switch. Tag wires and usea soldering iron of 50 watts max-imum to remove them fromswitch terminals.5-85
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