HP Color 9850mfp Service Manual - Page 284
Operation, MC301 Registration clutch
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II UNIT EXPLANATION PAPER FEED 1.2 Operation Q3228A 1.2.1 Single sided original mode A. Original feed operation The paper feed system is driven by the paper feed motor (M301). The registration clutch (MC301) functions as the brake to stop the registration roller, not to turn ON or OFF the drive force transmission. When M301 turns ON, the paper feed roller is pressed against the original set to the original feed tray. the original stopper goes up to the turnout position, and the paper feed roller and feed roller send the original to the registration roller. The original is struck against the reversing registration roller and M301 stops after the specified time. Thus, a loop is formed before the registration roller to correct the skewed original. After M301 stops, MC301 turns OFF to release the registration roller. Then, M301 starts reversing operation, and the timing sensor (PS302) turns ON and stops after the specified time. After that, M301 and conveyance motor (M302) start reversing at the same time to send the original to the conveyance belt (conveyance section). After PS302 turns ON by the original sent as described above, M301 stops after the specified time. 0 PS304 No sheet sensor PS301 Registration sensor MC301 Registration clutch M301 Paper feed motor No paper present Paper present No paper present Paper OFF ON CW300mm/s CW67mm/s Stop CCW300mm/s CCW710mm/s PS302 Timing sensor No paper present Paper present M302 Conveyance motor CW710mm/s 1 (sec) Stop CCW138mm/s CCW300mm/s CCW710mm/s 2-4