HP Color 9850mfp Service Manual - Page 285
PS302 Timing sensor, PS301 Registration sensor
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II UNIT EXPLANATION Q3228A PAPER FEED B. Scanning and conveying the original The transportation system is driven by the conveyance motor (M302). The original fed to the conveyance belt (conveyance section) is positioned for scanning. Refer to "C. Original swing-back control" below for details of this process. After the original is positioned, the scanner on the engine side scans the original. Upon completion of scanning, M302 and reverse/paper feed motor (M303) turn ON and feed the original to the reverse/paper exit section. M302 stops when the specified time elapses after the reverse sensor (PS305) turns ON. 0 1 (sec) PS304 No sheet sensor PS301 Registration sensor MC301 Registration clutch M301 Paper feed motor No paper present Paper present No paper present Paper present OFF ON CW300mm/s CW67mm/s Stop CCW300mm/s CCW710mm/s PS302 Timing sensor No paper present Paper present M302 Conveyance motor CW710mm/s Stop CCW138mm/s CCW300mm/s CCW710mm/s PS305 Reverse sensor M303 Reverse/paper exit motor No paper present Paper present CW710mm/s CW400mm/s CW350mm/s CW150mm/s Stop CCW150mm/s CCW400mm/s CCW710mm/s CCW900mm/s 2-5
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