Canon Finisher-T1 Service Manual

Also see for Finisher-T1: Service manual Portable manual Service manual

Contents

Canon Finisher-T1 Service Manual Manual pdf 47 page image

Chapter 22-292.5 Stack Tray Operation2.5.1 Tray Operation 0009-2522This equipment has three delivery trays. The upper tray is called escape tray, the middle trayis called tray 1, and the lower tray is called tray 2.The escape tray is fixed and tray 1 and tray 2 can move up and down independently.The escape tray has an escape tray full detector sensor (PI119). When the escape traybecomes full, the finisher controller PCB notifies the host machine to that effect.The finisher controller PCB controls the vertical movement of tray 1 and tray 2 by changingthe drive direction of the tray 1 shift motor (M107) and tray 2 shift motor (M108)(incorporating a motor driver PCB).Tray 1 paper sensor (PI111) and tray 2 paper sensor (PI112) are provided to detect thepresence of the paper stacked on tray 1 and tray 2.The home position of tray 1 is detected by the tray 1 paper surface sensor (PI114) and thehome position of tray 2 is detected by the tray 2 paper surface sensor (PI115) 1. The homeposition is the top surface of the paper if paper is already stacked on the tray, or the positionwhere the edge of the tray is detected if no paper is stacked. The tray 2 paper surface sensor(PI120) 2 detects the paper surface when 651 or more sheets are stacked in tray 2. Whenthe power is turned on, the finisher controller PCB drives the tray 1 shift motor (M107) andtray 2 shift motor (M108) to return the tray 1 and tray 2 to their home positions. If eithertray is already at the home position, it is moved out of the home position once and thenreturned to the home position again. If both tray 1 and tray 2 are at their home positions, thisoperation is performed for tray 2 and then for tray 1. If the tray specified by the host machineis tray 2, the finisher controller PCB raises the tray so that tray 2 is at the delivery port.When paper is stacked on either tray, the tray 1 shift motor (M107) or tray 2 shift motor(M108) is driven a prescribed number of pulses to lower the tray. Then the tray returns tothe home position to prepare for the next stack.The upper and lower limits of the tray are detected by three area sensors (PS981, PS982,and PS983) on the tray 1 and tray 2 shift area sensor PCB. The finisher controller PCB stopsdriving the tray 1 shift motor (M107) and tray 2 shift motor (M108) upon detection of theupper or lower limit of the tray. Also, the ON/OFF combinations of the area sensors (PS981,PS982, PS983) are used to detect over-stacking according to the stack height for large sizeand mixed stacking.The finisher controller PCB stops supplying +24V to the tray 1 shift motor (M107) andstops the finisher operation when tray 1 closing detect switch (MSW103) turns ON.