TM 5-6350-264-14&P-10NAVELEX EE 181-AA-OMI-110/E121 C-9412T.O. 31S9-2FSS9-1-10Table 5-2. Troubleshooting Procedures - ContinuedTroubleProbable causeCorrective action5. (Cont)b. (Cont)(2) To install new mode switch, use asoldering iron of 50 watts max-imum to connenct wires toswitch terminals. Slip mount-ing bracket and switch stopover switch shaft. Ensure thatnotch in mounting bracket fitsover tab on switch body, andthat the tang on switch stop en-gages notch in mounting brac-ket. Secure bracket and stop toswitch with lock washer andsmall hex nut. Insert lockthrough hole in CU door; slipspacer over lock. Slip switcharm over switch shaft. Ensurethat arm is aligned with thetang on switch stop. Placelarge hex nut inside switchmounting bracket; slip bracketover lock. Engage switch shaftin lock. Tighten nut to secureswitch.(3) Turn on switch S1 on power supply.Depress TRANSMITTERRESYNC switch S2. Wait about5 minutes for system to stabil-ize. Turn mode switch toTEST/RESET and then toSECURE.i.If meter indicates 20 ± 1 vdc on bothterminals 2-2 and 2-1 on S3, replacePC board A8.(1) To remove PC board A8, turn offswitch S1 on top of powersupply. Place thumb or fingerunder board ejector and lift upuntil board pops out ofreceptacle at back of statusprocessor. Then grasp PC boardand pull straight out.5-86
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