Duplo DP-S Series, Service Manual

Page: 26 / 298

25
2 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