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 action4. (Cont)g. Bad AudibleNOTEAlarmCircuitryEnsure that there is no jumperfrom TB4-1 to TB4-4. Discon-nect AA wire from TB4-3. Dis-connect green wire from TB4-1.Connect jumper from TB4-3 toTB4-4.a.Turn mode switch to TEST/RESET. Setmultimeter to dc volts and connectpositive lead to power supply TB4-1and negative lead to TB4-2.b.If meter indicates less than 1 vdc, connectpositive meter lead to mode switchS3, terminal 3-2, and negative lead tochassis.c.If meter indicates less than 1 vdc, inspectwiring from mode switch S3, terminal3-2 to power supply TB2-5 for looseor broken connections. Resolder anybad connections.d.If meter indicates 5 +0.25 vdc, connectpositive meter lead to S3, terminal3-4.e.If meter indicates less than 1 vdc, replacemode switch, S3.(1) To remove mode switch, turn offswitch S1 on top of power supply.Remove large hex nut that securesswitch mounting bracket to insideof CU door. Remove switch andmounting bracket together. Becareful not to lose switch armbecause it is not secured toswitch shaft. Remove spacerand lock from door so no itemswill be lost. Remove small hexnut and lock washer that securesmounting bracket and switchstop to switch shaft. Removemounting bracket and switchstop. Note that mode switch is athree deck switch. Tag wires anduse a soldering iron of 50 wattsmaximum to remove them fromswitch terminals.5-76
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
