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 action9.(Cont)b.(Cont)(2) To install new fuse F1, insert endof fuse into knob from fuseholder. Insert other end offuse into holder, push down onknob, and screw in about 1/4turn to lock.(3) Turn on switch S1 on power sup-ply. Depress TRANSMITTERRESYNC switch S2. Waitabout 5 minutes for systemto stabilize. During 5-minutestabilization period, checkpower supply. Set multimeterto dc volts and connect nega-tive lead to chassis (ground).Connect positive lead to powersupply, TB2-3. Meter shouldindicate 20 ±1 vdc. Connectpositive lead to TB2-5. Metershould indicate 5 ±0.25 vdc.Connect lead to TB2-2. Metershould indicate 28 ±2 vdc. Turnmode switch to TEST/RESETand then to SECURE.c.If meter indicates less than 110 volts onTB1, inspect main circuit breaker.If circuit breaker is tripped, ensurethat there is no voltage on wiresand inspect for faulty wiring fromcircuit breaker to CU power supplyTB1-1 and 2. Repair faulty wiring.d.Turn on main circuit breaker. Connectmeter leads to TB1-1 and 2 inpower supply. If meter indicatesless than 110 volts, notify facilitypersonnel. Ensure that system isoperating properly on batterypower.5-114
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