. OPERATION OPERATION CHECK MACHINE MONITOR all the monitors, gauges, and the central warning lamp light up for approx. 2 seconds, and that the alarm buzzer do not light up, there is probably a failure or Contact your Komatsu distributor for inspection. 3 - 102 CHECK BEFORE STARTIN Always p erform the procedures in this section before starting the engine 1. Turn starting switch to the ON position (B) 2. Check lamp light up sounds for a If the lamps disconnectio