®Proto-Sound 3.0 features are activated by sequences of Bell and Horn button pushesdescribed below. Please read the full descriptions of each feature before using it. Touse these buttons to activate features rather than to blow the horn or ring the bell,you should tap the buttons very quickly with a ½-second pause between buttonpresses. You may need to practice your timing to make this work smoothly.Timing ChartTotal Time Lapse: 1 Seconds½PressHornShort &Firm½ Sec.Pause½ Sec.PausePressBellShort &FirmPressBellShort &FirmFeature to Be Activated Button Code:Marker Lights*PFA (Passenger/Freight Announcements)Fire the Rear CouplerFire the Front CouplerSpeed Control On/OffLock into a DirectionReset to Factory Defaults1 Bell, 1 Horn/Whistles1 Bell, 2 Horn/Whistles1 Bell, 3 Horn/Whistles1 Bell, 4 Horn/Whistles1 Horn/Whistle, 2 Bells (from Neutral only)1 Horn/Whistle, 3 Bells1 Horn/Whistle, 5 Bells (from Neutral only)Manual Volume ControlTo adjust the volume of allsounds made by thisengine, turn the manualvolume control (fig. 7)clockwise to increase thevolume andcounterclockwise to reducethe volume. Turning themanual volume controlcompletelycounterclockwise will turnof all of the engine soundsand announcements.*Only applicable to engines equipped with marker lightsMarker Lights (On/Off) (if equipped)By default your Marker Lights are set to ON. To toggle the Marker Lights, performthe following sequence on your AC transformer:Marker Lights(On/Off)HornPlaceEngine inNeutral=BellRailKing 4-8-8-4 Big Boy Steam Engine10Manual VolumeControlFigure 6: Manual Volume Control