(10) ONE OR BOTH HEADLIGHTS FAIL TO OPERATE

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_217

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_219

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). (10) ONE OR BOTH HEADLIGHTS FAIL TO OPERATE. All other lights operate. Initial Setup: Tools/Test Equipment: Equipment Conditions: l Digital multimeter (DMM) (Item 13, Appendix I) MASTER switch set to OFF (refer to TM l General mechanic’s tool kit (Item 24, 9-2350-287-10). Appendix I) Lighting switch in SER DRIVE position and dimmer switch set to low beam Materials/Parts: (refer to TM 9-2350-287-10). l LockWasher (4) (Item 119, Appendix H) Personnel Required: Two NOTE Instead of using multi meter for voltage check, STE/lCE troubleshooting, INDIVIDUAL BATTERY VOLATGE TEST-TEST 89 maybe performed. l Instead of using multi meter for continuity check, STE/lCE troubleshooting, TEST 91 may be performed. l Troubleshooting procedures for both headlight assemblies are identical. If both headlights fail to work, troubleshoot both according to steps A through C. A. 1. Remove four screws, Iockwashers, cover, and headlight bulb from headlight assem- bly. Discard Iockwashers. 2. Place red lead of multimeter in light bulb socket and ground black lead. 3. Turn MASTER switch ON (refer to TM 9- 2350-287-10). 4. Turn MASTER switch OFF (refer toTM 9- 2350-287-10). Is voltage indicated? Continued on next page 2-166

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