Duplo DP-S550 - Page 26

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v Drum Driving Section..................................................73
1. Description...............................................................73
2. Function of Parts ....................................................74
(1) Drum Position 1 Sensor.......................................... 74
(2) Drum Position 2 Sensor .......................................75
(3) Drum Removal Button/LED..............................76
(4) JOG Switch.........................................................76
(5) Control of the Main Motor.................................77
1. Rotation Speed Control by Encoder Sensor ...78
2. Selecting the Speed..........................................78
b Press Section...............................................................79
1. Description...............................................................79
(1) Press Roller Timing & Printing Area................79
2. Function of Parts ....................................................81
(1) Press Roller Sensor ............................................81
(2) Switching the Contact Pressure........................82
1. Contact pressure position sensing..................83
n Paper Ejection Section................................................84
1. Description...............................................................84
2. Function of Parts ....................................................85
(1) Paper Stripper Finger........................................85
(2) Top Fan...............................................................86
(3) Paper Eject Jam Sensor ....................................87
1. Paper JAM Detection Timing .........................88
(4) Paper Ejection Belt ............................................89
m Drum Section ...............................................................90
1. Description...............................................................90
2. Circuit.......................................................................91
3. Function of Part.......................................................92
(1) Ink Detection......................................................92
1. LED Display and Output Signal on
the Ink Detection PCB Unit............................93
2. "NO INK" Display Timing...............................94
(2) Ink Roller Up / Down Mechanism.....................95
(3) Ink Pump............................................................97
(4) Drum Switch.......................................................98
(5) Fine Start Mode..................................................99
(6) Front Cover Detection Switch .........................101