TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).h. LIGHTS (continued).(17) PORTABLE INSTRUMENT PANEL LIGHTS FAILTO OPERATE. All other lights operate.Initial Setup:Tools/Test Equipment:Digital multimeter (DMM) (Item 13, Appendix I)General mechanic’s tool kit (Item 24,Appendix I)Equipment Conditions:MASTER switch set to OFF (refer to TM9-2350-287-10).Panel lighting switch set to bright(refer to TM 9-2350-287-10).NOTEl Instead of using multimeterfor voltagecheck, STE/lCEtroubleshooting,INDIVIDUALBATTERY VOLTAGE TEST-TEST89 maybe performed.. Instead of using multi meterfor continuity check, STE/lCEtroubleshooting, TEST 91 maybe performed.A.1. Remove defective panel light from driver’sinstrument panel (para 7-7). -2. Place multirneter red lead in center contactof light bulb socket and ground black lead.3. Turn MASTER switch ON (refer to TM 9-2350-287-10).4. Check for 24 ± 3 vdc.5. Turn MASTER switch OFF (refer to TM 9-2350-287-10).Is voltage indicated?Replace light bulb (para 7-6). Verifyproblem is solved.Continued on next page2-195
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