1.1 Product Specifications ................................................................................................................................1- 1

1.1.1 Specifications .......................................................................................................................................................... 1- 1

1.2 Names of Parts ...........................................................................................................................................1- 2

1.2.1 External View........................................................................................................................................................... 1- 2

1.2.2 Cross Section .......................................................................................................................................................... 1- 2

1.3 Using the Machine ......................................................................................................................................1- 3

1.3.1 Original Placement Indicator ................................................................................................................................... 1- 3

1.3.2 Warning and Action to Take .................................................................................................................................... 1- 3

Chapter 2 Functions

2.1 Basic Construction......................................................................................................................................2- 1

2.1.1 Overview of the Electrical Circuitry.......................................................................................................................... 2- 1

2.1.2 Inputs to the ADF Controller PCB............................................................................................................................ 2- 2

2.1.3 Outputs from the ADF Driver PCB........................................................................................................................... 2- 3

2.2 Basic Operation ..........................................................................................................................................2- 4

2.2.1 Routes of Drive........................................................................................................................................................ 2- 4

2.2.2 Overview of Operation Modes ................................................................................................................................. 2- 4

2.2.3 Normal Rotation Pickup/Reversal Operation (single-sided original -> signal-side print) ......................................... 2- 6

2.2.4 Normal Rotation Pickup/Delivery Operation (double-sided original -> double-sided print)...................................... 2- 7

2.2.5 Normal Rotation Pickup/Reversal Delivery (double-died original -> double-sided print) ....................................... 2- 13

2.2.6 Idle Feed/Reversal Pickup/Delivery (single-sided original of mixed configurations -> single-sided print) ............. 2- 15

2.3 Document Detection .................................................................................................................................2- 17

2.3.1 Overview................................................................................................................................................................ 2- 17

2.3.2 Checking the Presence/Absence of an Original .................................................................................................... 2- 18

2.3.3 Identifying the Size of the Original......................................................................................................................... 2- 18

2.4 Document Pickup/Separation ...................................................................................................................2- 24

2.4.1 Basic Sequence of Operation................................................................................................................................ 2- 24

2.4.2 Pickup Unit and the Stopper.................................................................................................................................. 2- 25

2.4.3 Timing of Pickup .................................................................................................................................................... 2- 25

2.4.4 Controlling the Pickup Motor (M1) ......................................................................................................................... 2- 26

2.4.5 Controlling the Lock Motor (M4) ............................................................................................................................ 2- 26

2.5 Document Reversing ................................................................................................................................2- 27

2.5.1 Basic Sequence of Operation................................................................................................................................ 2- 27

2.5.2 Sequence of Operation.......................................................................................................................................... 2- 28

2.5.3 Controlling the Delivery Reversal Motor (M3)........................................................................................................ 2- 28

2.6 Document Feeding/Delivery .....................................................................................................................2- 28

2.6.1 Basic Sequence of Operation................................................................................................................................ 2- 28

2.6.2 Sequence of Operation.......................................................................................................................................... 2- 29

2.6.3 Controlling the Feed Motor .................................................................................................................................... 2- 29

2.7 Detecting Jams .........................................................................................................................................2- 30

2.7.1 JAM ....................................................................................................................................................................... 2- 30

2.8 Power Supply ...........................................................................................................................................2- 30

2.8.1 Power Supply ........................................................................................................................................................ 2- 30

2.9 Stamp Operation ......................................................................................................................................2- 31

2.9.1 Overview................................................................................................................................................................ 2- 31

Chapter 3 Parts Replacement Procedure

Contents