PRINTER 3000 304 995 - 01iPRINTER MODEL-L1G191SERVICE MANUALTECHNICAL DOCUMENT6 September 2005 !1-15DetailedDescriptionsPaper End DetectionThe laser unit [A] has the paper end sensor [B] built into it. The paper end sensordetects the presence or absence of paper. The sensor has an actuator thatextends through a slot in the paper tray bottom plate [C], so that the sensor isactuated when paper is placed in the upper tray.When the upper tray runs out of paper, the actuator of the paper end sensor movesinto the slot in the upper tray bottom plate. This informs the CPU that paper has runout.G182D008.WMF[A][B][C]