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 action6.(Cont)Improperlead to TB2-5. Meter shouldoperation ofindicate 5 ±0.25 vdc. Connectaudible signallead to TB2-2. Meter shoulddevice. (Cont)indicate 28 ±2 vdc. Turn modeswitch to TEST/RESET andthen to SECURE.f.Connect positive meter lead to J8-14 andnegative meter lead to chassis. Ifmeter indicates 5 ±0.25 vdc, re-place PC board A8.To install new PC board A8, turnoff switch S1 on power sup-ply. Turn board so plastic ejec-tor is toward top. Align boardwith guides at top and bottomof status processor. Slide boardstraight out until it contacts re-ceptacle at back of processor.Then press firmly on board un-til it seats completely in recep-tacle.g.If meter indicates less than 1 vdc at J8-14,replace PC board A9.(1) To remove PC board A9, turn offswitch S1 on top of power sup-ply. Place thumb or finger un-der board ejector and lift upuntil board pops out of recep-tacle at back of status processor.Then grasp PC board and pullstraight out.(2) To install new PC board A9, turnboard so plastic ejector is to-ward top. Align board withguides at top and bottom ofstatus processor. Slide boardstraight in until it contacts re-ceptacle at back of processor.Then press firmly on board un-til it seats completely in re-ceptacle.5-91
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