HP Color 9850mfp Service Manual - Page 116
Operation, Paper size L3
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II UNIT EXPLANATION PAPER FEED TRAY /1 TO /3 Symbol PS40 PS41 PS42 PS43 PS44 PS45 PS46 VR1 VR2 VR3 Name Paper size L2 Pre-registration sensor 3 Tray upper limit sensor 3 No paper sensor /3 Remaining paper sensor 3 Paper size S3 Paper size L3 Paper size VR/1 Paper size VR/2 Paper size VR/3 hp Color 9850mfp Function or method Detection of the paper size along the length of the tray 2 Detection of paper conveyance at the pre-registration roller 3 entrance Detection of the upper limit of the tray 3 paper Detection of the presence of the tray 3 paper Detection of the remaining paper in the tray 3 Detection of the paper size along the length of the tray 3 Detection of the paper size along the length of the tray 3 Detection of the paper size along the width of the tray 1 Detection of the paper size along the width of the tray 2 Detection of the paper size along the width of the tray 3 8.2 Operation Since the composition and the operation of the paper feed trays 1 to 3 are the same, the explanation is given of the paper feed tray 1 only. The paper feed trays 2 and 3 are the same as the paper feed tray 1. The intermediate conveyance sensor 1 (PS27) and the intermediate conveyance clutch 1 (MC13) are not used in the paper feed control in the paper feed tray 1. 8.2.1 Paper feed control [1] Paper feed motor (M41) Pick-up solenoid 1 (SD7) Paper feed clutch 1 (MC7) Pre-registration clutch 1 (MC8) Pre-registration sensor 1 (PS29) Intermediate conveyance sensor 1 (PS27) Intermediate conveyance clutch 1 (MC13) [1] START button (ON) [2] 1st sheet pre-registration loop [2] [3] [3] 2nd sheet pre-registration loop 2-42