TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).h. LIGHTS (continued).(3) MASTER WARNING LIGHT FAILS TO OPERATEWHEN ENGINE OVERHEATS. All other lightsoperate.Initial Setup:Tools/Test Equipment:Equipment Conditions:• Digital multimeter (DMM) (Item 13, Appendix 1)• MASTER switch set to OFF (refer to TM• General mechanic’s tool kit (Item 24,9-2350-287-10).(Appendix 1)NOTE• Instead 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. Remove lens and light bulb from driver’sportable instrument paneI MASTER warninglight indicator, and remove light bulb fromsteering shaft MASTER warning light assem-bly.2. Turn MASTER switch ON (refer to TM 9-2350-287-1O).3. Place red lead of multimeter in driver’sportable instrument panel MASTER warninglight indicator socket and ground black lead.4. Check for 24 ± 3.5. Perform steps 3 and 4 on steering shaftwarning light assembly.6. Turn MASTER switch OFF (refer to TM 9-2350-287-10.Is voltage indicated?Replace lamp from socket thatindicated voltage (para 7-6 or 7-35).Verify problem is solved.Continued on next page2-144
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