TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).h. LIGHTS (continued).(16) BLACKOUT (BO) STOP LED FAILS TO OPERATE.All other lights operate.Initial Setup:Tools/Test Equipment:Equipment Conditions:l Digital multimeter (Item 13, Appendix I)l MASTER switch set to OFF (refer to TMl General mehanic’s tool kit (Item 24,9-2350-287-10).Appendix I)l Lighting switch set to BO DRIVE positionand brake pedal locked.Materials/Parts:Wire (12 foot) (Item 77, Appendix D)NOTEInstead of using multi meterfor voltagecheck, STE/lCEtroubleshooting,INDIVIDUALBATTERY VOLTAGE TEST-TEST89 maybe performed.Instead of using multi meterfor continuity check, STE/lCEtroubleshooting, TEST 91 maybe performed.A. 1. Loosen six screws, and remove coverfrom right taillight assembly.2. Remove BO stoplight LED from bottomsocket of taillight assembly.3. Place multimeter red lead in LED socketand ground black lead.4. Have assistant turn MASTER switch ON(refer to TM 9-2350-287-10).5. Check socket for 24 ± 3 vdc.6. Turn MASTER switch off (refer to TM 9-2350-287-10).Is voltage indicated?Replace blackout stoplight LED (para 7-34). Verify problem is solved.Continued on next page2-191
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