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) leads to inner enclosure and negative terminal of C15. Note indication. Connect meter leads to inner enclosure and negative terminal of C16. Meter should indicate less than 100,000 ohms in both tests. Meter may not give correct indication immediately. i. If either indication is greater than 100,000 ohms, replace electronics assembly. CAUTION Inner enclosure is heavy. Use caution when removing from outer enclosure. (1) To remove electronics assembly, loosen collar on connector P2. Turn metal tab 90 degrees and disconnect P2 from J2. Tag and disconnect wires that run from terminal boards to conduit. Slide the inner enclosure out of the outer enclosure. Place inner enclosure on bench. Remove screws, lock washers, and washers and disconnect connector J1 from P1. Remove mounting screws from rear of inner enclosure and remove electronics assembly. (2) To install new electronics assembly, position assembly on inner enclosure. Install mounting screws through rear of inner enclosure. Connect J1 to P1 and install screws, lock washers, and washers. Slide inner enclosure into outer enclosure. 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. j. Reconnect leads to negative terminals of C15 and C16. Turn on switch S3 on power supply. Set multimeter to ac volts. Connect positive lead to P1-l and negative lead to P1- 2. 5-9