1.2.3.4.TM 9-2350-261-20-1Reconnect leads 19A and 19B to S1 position 2.Set BLACKOUT ENABLE switch to upward position(see TM 11-7010-256-12&P).Measure resistance between terminal 2 (1) and ter-minal 3 (2) of BLACKOUT ENABLE switch S1 (3).Does multimeter read infhite ohms?GO TO NEXT PAGE1. Faulty relay K5.2. Notify your Supervisor.Change 33-226.105
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