Troubleshooting Procedures

TM 5-6350-264-14&P-9 NAVELEX EE 181-AA-OMI-100/E121 DZ-204 T.O. 31S9-2FSS9-1-9 Table 5-1. Troubleshooting Procedures - Continued Trouble Probable cause Corrective action 1. (Cont) b. (Cont) Route wires through hole in rear of inner enclosure. Connect wires that run from terminal boards to conduits. Align notch on P2 with J2 and connect P2 to J2. Lock metal tabs together and tighten collar on connector P2. c. Defective a. Ensure that power switch S1 in Control Unit is turned off. power Slide inner enclosure part way out. Remove screws that switch, S3. secure switch bracket. Lower switch bracket to gain access to switch terminals. Ensure that power switch S3 is on. Set multi-meter to ohms. Connect meter leads to S3-1 and 2 (red wires). Note meter indication. Connect meter leads to S3-3 and 4 (black wires). Note meter indication. b. If meter indicates over 100,000 ohms, replace switch S3. (1) To remove switch S3, unscrew and remove knurled nut from front of switch bracket. Push switch through hole in bracket. Tag wires and use a soldering iron of 50 watts maximum to remove wires from switch terminals. (2) To install new switch S3, use a soldering iron of 50 watts maximum to connect wires to switch terminals. Insert switch through hole in switch bracket. Place knurled nut over switch and tighten to secure switch. Place switch bracket in position inside upper left corner or inner enclosure. Insert screws through enclosure and tighten to secure switch bracket. Slide inner enclosure all the way into outer enclosure. d. Defective a. Ensure that power switch S1 in Control Unit is turned off. power trans- Disconnect negative lead from battery. Slide inner former T1 enclosure part way out. Remove screws that secure switch bracket. Lower switch bracket to gain access to terminals on 5-11