TM 9-2350-247-20-1INFRARED HEADLIGHT(S) DOES NOT OPERATE 0037 00INITIAL SETUP:Maintenance LevelUnitTools and Special ToolsGeneral Mechanic’s Tool Kit (WP 0541 00, Item 57)Multimeter (WP 0541 00, Item 29)Slip Joint Pliers (WP 0541 00, Item 33)Personnel RequiredUnit MechanicReferencesSee your -10Equipment ConditionEngine stopped (see your -10)Carrier blocked (see your -10)NOTEM548A1 and M548A3 troubleshooting procedures are the same. M548A1 procedure is shown.T1. Operate all exterior lights (see your -10).2. Do any exterior lights operate in any light switch positions?YESNOTN1. Go to no exterior lights operate(WP 0034 00).Y1. Turn master light switch to BO DRIVE.2. Move IR/BO select switch to IR (see your -10).3. Do both IR high beams and/or both IR low beams fail to come on?YESNOGO TO BY (PAGE 0037 00-4)0037 00-1
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