TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).v.AFES, ENGINE (continued).(1) POWER ON LAMP DOES NOT LIGHT WHENMASTER SWITCH IS ON. All other electricalsystem operate.Initial Setup:Tools/Test Equipment:l Engine AFES Test/Alarm panel MAINT switch inl Digital mltimeter (DMM) (Item 13, Appendix I)maintenance position (para 21 -2).l General mechanic’s tool kit (Item 24,Appendix I)Equipment Conditions:l MASTER switch set to OFF (refer toTM 9-2350-287-10).NOTEl Instead of using multi meterfor voltage check, STE/lCEtroubleshooting,INDIVIDUALBATTERY VOLTAGE TEST-TEST89 maybe performed.l Instead of using multimeterfor continuity check, STE/lCEtroubleshooting, TEST 91 maybe performed.A.WARNINGTurn Engine T/A panel MAINTswitch to vertical position andMASTER switch OFF beforedisconnecting any electrical wiringharnesses. Failure to comply mayr e s u l t i n d i s c h a r g e o f f i r eextinguisher cylinders, electricalshock and injury to personnel.1. Disconnect wiring harness 12352354connector P1 from Engine T/A panel.2. Place red lead of multimeter in socket Dand ground black lead of multimeter.3. Check for 24 ± 3 vdc.2-322
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