Duplo DP-S Series, Service Manual

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24
Chapter 2 Description of the Operation
z
Scanner Section...........................................................26
1. Description...............................................................26
2. Sequence of Operation ...........................................27
(1) Sequence of the Scanner Operation ..................27
(2) Sequence of the Scanner Operation (S3-ADF)..27
(3) Operation with the Document
Cover Open / Closed ..........................................28
1. Reading the Document Size...........................28
2. Reading the Document Darkness..................28
2
Platemaking Area for the Selected Paper.....29
2
Platemaking Area for the Book Shadow
Erasing Mode..................................................29
3. Function of Parts and Circuit.............................30
(1) Slider Limit Sensors 1, 2....................................30
(2) Document Size Sensor........................................31
(3) Document Cover Open/Close Sensor.................33
(4) CCD / Lamps ......................................................34
(5) Scanner Unit Open / Close Detection................35
x
Platemaking / Master Feed / Ejection Section...........36
Platemaking / Master Feed Section ........................40
1. Description...............................................................40
2. Sequence of Operation ...........................................41
(1) Operation when the master set ........................41
(2) Platemaking / Master Feeding ..........................42
3. Function of Parts ....................................................43
(1) Thermal Head.....................................................43
(2) End Mark Sensor ...............................................46
1. Master Setting Error Detection ......................47
2. Master End Detection......................................47
(3) Master top sensor ...............................................48
(4) Drum Master Sensor .........................................49
(5) Cutter Unit .........................................................50
(6) Master Feed Clutch (Electromagnetic clutch)..51
Master Ejection Section ...........................................52
1. Description...............................................................52
2. Circuit .......................................................................52
3. Function of Parts ....................................................53
(1) Master Ejection Sensor ......................................53
1. Master Ejection Error Detection.....................53
2. Rotation Control of the Eject(Roll-up) Motor .........53
Master Clamp Opening/Closing Section ...............54
1. Description...............................................................54
2. Operation of Master Clamp Open / Close Lever ........55
(1) Structure.............................................................55
(2) Master Attach / Detach Operation ....................56
(3) Clamp Opening / Closing
Lever Position (B / C Mode)...............................57
3. Function of Parts ....................................................58
(1) B / C Mode Detect Sensor ..................................58
4. Returning Operation Flowchart
When the Power is Cut Off Accidentally ...............59
c
Paper Feed Section .....................................................60
1. Description...............................................................60
2. Operation .................................................................61
(1) Rotation of the Paper Feed Roller and
Timing Roller .....................................................61
(2) Paper Feed Roller Drive.....................................62
(3) Driving of the Timing Roller..............................63
(4) Escape the Guide Roller.....................................64
(5) Paper Feed Length .............................................65
3. Function of Parts .....................................................66
(1) Printing Position Adjustment Mechanism .......66
(2) Double Feed Detect Mechanism ........................68
(3) Elevator Top Limit Sensor .................................69
(4) Elevator Lower Limit Switch ............................70
(5) Paper Sensor.......................................................71