HP CP6015dn Service Manual - Page 651
Construction of the stacker-unit control system, Second output-bin paper sensor PI43
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Page 651 highlights
Figure 8-45 Feed drive for the booklet maker unit Output bin 1 Output bin 2 Booklet maker output bin Construction of the stacker-unit control system The paper sent from the product is delivered to the output bin or the processing tray according to the type. Job offset or stapling is performed on paper delivered to the output bin, according to the instructions from the product. When paper ejects from the processing tray, a stack trailing-edge assist guide is used in addition to the stack-ejection roller to eject the stack. The inlet motor (M31), stack-ejection motor (M32), and stack trailing-edge assist motor (M39) are step motors. The microcomputer (CPU) in the stacker controller PCA rotates these motors forward or backward. The following two sensors in the paper delivery path detect the arrival or passing of papers: ● Stacking paper-path-entry sensor (PI33) ● Stacking paper-path-delivery sensor (PI34) Each output bin also has sensors to detect the presence of a paper on the bin: ● First output-bin paper sensor (PI42) ● Second output-bin paper sensor (PI43) If the sheet does not reach or pass each sensor within the prescribed time, the stacker controller PCA determines that the jam has occurred and stops the operation. It then notifies the product that a jam has occurred. After the jam is cleared and the doors are closed, the stacker unit checks whether the sheet is detected by the stacking paper path entry sensor or stacking paper path delivery sensor. If the sensors ENWW Theory of operation 609
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