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 action1.(Cont)d.(Cont)and TB4. Remove screws that se-cure cover, and remove cover. Tagand disconnect wires from TB1.Carefully remove screws that se-cure power supply to side of CUenclosure. Be careful not to dropit inside CU. Note cable clampunder screw near TB4 (bottomfront). Support power supply andturn it so wires can be tagged anddisconnected fromTB3 on bottomof power supply.(2) To install new power supply, re-move cover, and turn unit so TB3is accessible. Support power sup-ply, and connect wires to TB3.Turn power supply upright andposition it over standoffs on sideof CU enclosure. Note that cableclamp goes under screw on bottomfront of power supply. Insertscrews and tighten to secure powersupply. Connect wires to TB1.Replace cover and secure withscrews. Connect wires to TB2and TB4. Position battery outsideCU enclosure. Carefully insertbattery end first; turn and lower itinto bottom of CU enclosure. Con-nect wires to battery terminals.Switch on main circuit breaker.(3) Turn on switch S1 on power sup-ply. Depress TRANSMITTERRESYNC switch S2. Wait about5 minutes for system to stabilize.Turn mode switch to TEST/RESETand then to SECURE.e.Set multimeter to dc volts and connectpositive meter lead to PC board A10,TP1 (brown), and negative lead to chassis(ground). Turn mode switch to SE-CURE and ensure that no alarms are acti-vated. Meter should indicate 18.5 to21 vdc.5-20
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