hp Color 9850mfp DRUM UNIT 3.2 Operation 3.2.1 Image formation timing II UNIT EXPLANATION [1] Paper feed start [2] 2nd transfer cleaning 2-25 Paper feed motor (M41) Drum motor Y (M14) Drum motor M (M15) Drum motor C (M16) Drum motor K (M17) Transfer belt motor (M18) 1st transfer pressure/release motor (M19) 2nd transfer pressure/release motor (M34) Developing motor Y (M20) Developing motor M (M21) Developing motor C (M22) Developing motor K (M23) Pre-charging exposure lamp Y (PCL Y) Pre-charging exposure lamp M (PCL M) Pre-charging exposure lamp C (PCL C) Pre-charging exposure lamp K (PCL K) Charging Y (HV1) Charging M (HV1) Charging C (HV1) Charging K (HV1) Developing bias Y (DC) (HV1) Developing bias M (DC) (HV1) Developing bias C (DC) (HV1) Developing bias K (DC) (HV1) Developing bias Y (AC) (HV1) Developing bias M (AC) (HV1) Developing bias C (AC) (HV1) Developing bias K (AC) (HV1) 1st transfer Y (HV2) 1st transfer M (HV2) 1st transfer C (HV2) 1st transfer K (HV2) 2nd transfer (HV2) Separation (HV2) Guide plate (HV2) Drum separation claw solenoid (SD1) V TOP Paper exit sensor (PS13) [1] [2]