Canon M3010 Series Service Manual

Contents

Canon M3010 Series Service Manual Manual pdf 32 page image

22 2-172-17Technical Overview > Image Formation System > Toner Cartridge > Toner Cartridge Absence/Presence DetectionTechnical Overview > Image Formation System > Toner Cartridge > Toner Cartridge Absence/Presence DetectionToner Cartridge■ Toner Level DetectionThis equipment has no function of toner level detection.■ Toner Cartridge Absence/Presence DetectionThe engine controller detects the position of the Toner cartridge detection flag to judge theabsence/presence of the Toner cartridge.At the time of turning on the power or closing the upper cover, the engine controller judgesthe position of the Toner cartridge flag based on the output result of the Paper Leading EdgeSensor (PS751).When the output result of the Paper Leading Edge Sensor (PS751) is L, it is judged that theToner cartridge is absent; If being H, it is judged that the Toner cartridge is present.Engine controllerPS751="H"Toner cartridgedetection flagLeading edgesensor detection flagPS751PS751="L"Tonercartridge=YesTonercartridge=NoF-2-20The Paper Leading Edge Sensor (PS751) performs both this detection and paper feeddetection. Therefore, the engine controller cannot make a judgment of ‘Toner cartridgeabsent’ or ‘jam occurrence’ when jam occurs.The engine controller judges this case as ‘Toner cartridge absent’ and notices it to the maincontroller.If jam occurs when ‘Toner cartridge absent’ is detected, check if there is a fault in the PaperLeading Edge Sensor (PS751) and the detection flag.