HP CM6030 Service Manual - Page 235
Multipurpose tray last-paper detection
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3. The lifting plate rises to meet the rotating pickup roller, and paper is picked from the stack. 4. The multipurpose tray separation roller isolates a single sheet of paper in case more than one sheet was picked. The single sheet of paper is fed into the product. This mechanism is the same as for the cassette pickup operation. Figure 5-36 Multipurpose tray pickup mechanism DC controller PICKUP MOTOR CONTROL signal MP TRAY PICKUP SOLENOID DRIVE signal MP TRAY MEDIA PRESENCE signal M5 Pickup motor MP tray pickup solenoid SL2 Media MP tray pickup roller SR6 Lifting plate MP tray separation roller SR6: MP tray media presence sensor Multipurpose tray last-paper detection Because the paper path between the multipurpose tray paper-presence sensor and the registration roller is short, the product attempts to form the next image before the DC controller detects that the tray is empty. To prevent the image from being formed on the photosensitive drum and wasting toner, the multipurpose tray last-paper sensor detects the empty tray before the image-formation process begins. As the last sheet of paper is picked up, the multipurpose tray last-paper detection roller rotates. It does not rotate if two or more sheets are in the tray. The multipurpose tray last-paper sensor detects the ENWW Pickup, feed, and delivery system 189
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1,214