TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1

(12) FRONT BLACKOUT (BO) MARKER LEDS FAIL TO OPERATE

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_232

TM-9-2350-287-20-1 Carrier Ammunition Tracked M992A21 (2350-01-352-3021) EIC:AE6 Manual
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TM 9-2350-287-20-1 2-19. TROUBLESHOOTING CHART (continued). h. LIGHTS (continued). (12) FRONT BLACKOUT (BO) MARKER LED’S FAIL TO OPERATE. All other lights operate (continued). CONTINUED FROM A B. 1. Loosen clamp and remove headlight as- sembly from headlight mount of vehicle. 2. Place red lead of multimete ron wire socket F of headlight mount and ground black lead. 3. Have assistant 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? Repair or replace headlight assembly (para 7-31 ). Verify problem is solved. C. 1. Disconnect wire 20 of harness 10921380 from headlight mount assembly harness. 2. Place one lead of multimeter on socket F at headlight mount and place other lead on wire 20 pin connector of headlight mount assembly harness. 3. Check for continuity. Is continuity indicated? Replace headlight mount assembly (para 7- 31). Verify problem is solved. D. 1. Disconnect harness 12330252 from driver’s bulkhead. Continued on next page 2-179

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