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) j. If meter indicates less than 1 vdc at J8-11, remove PC board A10 and install PC board A8. (1) To remove PC board A10, 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 PC board A8, 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 contacts receptacle at back of processor. Then press firmly on board until it seats completely in receptacle. (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/RE- SET and then to SECURE. k. Connect positive meter lead to J10-7, and negative lead to chassis (ground). l. If meter indicates more than 10 vdc, re- place PC board A8. (1) To remove PC board A8, 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 A8, turn board so plastic ejector is toward top. Align board with guides at top and bottom of status proces- sor. Slide board straight in until 5-22