Troubleshooting Procedures

TM 5-6350-264-14&P-10 NAVELEX EE 181-AA-OMI-110/E121 C-9412 T.O. 31S9-2FSS9-1-10 Table 5-2. Troubleshooting Procedures - Continued Trouble Probable cause Corrective action 1. (Cont) d. (Cont) f. If meter still indicates less than 1 vdc, turn off switch S1 on power supply. Re- move PC board A8. Lift board ejector until PC board pops out of receptacle, then grasp board and pull straight out. g. Turn on switch S1 on power supply. De- press TRANSMITTER RESYNC switch S2. Wait about 5 minutes for system to stabilize. Turn mode switch to TEST/ RESET and then to SECURE. h. Set multimeter to dc volts and connect positive meter lead to J8-11, and nega- tive lead to chassis (ground). Ensure that no alarms are activated. i. If meter indicates more than 10 vdc, re- place PC board A7. (1) To Remove PC board A7, turn off switch S1 on top of power supply. Place thumb or finger under board ejector and lift up until board pops out of receptacle at back of status processor. Then grasp PC board and pull straight out. (2) To install new PC board A7, turn board so plastic ejector is toward top. Align board with guides at top and bottom of status processor. Slide board straight in until it con- tacts receptacle at back of proces- sor. Then press firmly on board until it seats completely in recep- tacle. (3) Turn on switch S1 on power sup- ply. Depress TRANSMITTER RESYNC switch S2. Wait about 5 minutes for system to stabilize. Turn mode switch to TEST/ RESET and then to SECURE. 5-21