TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).h. LIGHTS (continued).(11) ONE OR BOTH BLACKOUT (BO) DRIVE LIGHTSFAIL TO OPERATE. All other lights operate.(continued).CONTINUED FROM FF. 4. Turn MASTER switch and lighting switchOFF (refer to TM 9-2350-287-10).Is voltage indicated?Replace dimmer swtich (para 7-20). Verify problem is solved.G. 1. Remove six screws and cover from driver’sinstrument panel.2. Disconnect harness 12330252 connectorfrom lighting switch.3. Place one lead of multimeter in socket Cof harness 12330252 dimmer switch con-nector and place other lead socket D ofharness 123330252 lighting switch connec-tor and check for continuity.Is continuity indicated?Notify Direct Support maintenance.H.1. Reconnect harness 12330252 connectorto dimmer switch.2. Place multimeter red lead in socket F ofharness 12330252 Iighting switch and groundblack 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).Continued on next page2-176
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