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 2. (Cont) a. (Cont) To install PC board A7, 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 it contacts receptacle at back of processor. Then press firmly on board until it seats completely in receptacle. i. If meter indicates over 100, 000 ohms at J7-1 and J7-14, connect meter leads to J7-14 and TB4-3 in power supply. Meter should indicate 0 ohms. j. If meter indicates over 100, 000 ohms, in- spect J12/P1, pin 17, for broken or loose connections. Resolder any bad connec- tions on P1. k. Connect meter leads to J7-1 and TB4-2 in power supply. Meter should indicate 0 ohms. l. If meter indicates over 100, 000 ohms, in- spect J12/P1, pin 34, for broken or loose connections. Resolder any bad connec- tions on P1. m. 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. b. Loose or. a. Turn off switch S1 on top of power sup- broken wire ply. Inspect all wiring for tight, clean connections. connections. Repair any bad connections. NOTE If data transmitter is installed, it must be removed to reach TB8-F through TB13-E. Remove screws that secure Transmitter and carefully move it aside. 5-37