Service manual

Contents
4.4.4 Drive Unit.................................................................................................................................................................4- 9
4.4.4.1 Removing the Drive Unit .......................................................................................................................................................... 4- 9
4.4.5 Pick-up/Feed Roller Unit..........................................................................................................................................4- 9
4.4.5.1 Removing the Pickup/Feed Roller Unit .................................................................................................................................... 4- 9
4.4.6 Pick-up Roller ..........................................................................................................................................................4- 9
4.4.6.1 Removing the Pickup Roller..................................................................................................................................................... 4- 9
4.4.7 Feed Roller............................................................................................................................................................4- 10
4.4.7.1 Removing the Feed Roller ..................................................................................................................................................... 4- 10
4.4.8 ADF Motor ............................................................................................................................................................. 4- 10
4.4.8.1 Removing the ADF Motor ...................................................................................................................................................... 4- 10
4.4.9 Document Set Sensor ...........................................................................................................................................4- 10
4.4.9.1 Removing the Document Set Sensor..................................................................................................................................... 4- 10
4.4.10 Document Edge Sensor.......................................................................................................................................4- 11
4.4.10.1 Removing the Original Placement Sensor ........................................................................................................................... 4- 11
4.4.11 Registration Sensor .............................................................................................................................................4- 11
4.4.11.1 Removing the Registration Sensor ...................................................................................................................................... 4- 11
4.4.12 Separation Sensor ............................................................................................................................................... 4- 11
4.4.12.1 Removing the Separated Paper Sensor .............................................................................................................................. 4- 11
4.4.13 Pick-up Solenoid.................................................................................................................................................. 4- 11
4.4.13.1 Removing the Pickup Solenoid ............................................................................................................................................ 4- 11
4.4.14 Registration Solenoid...........................................................................................................................................4- 12
4.4.14.1 Removing the Registration Solenoid.................................................................................................................................... 4- 12
4.4.15 Release Solenoid.................................................................................................................................................4- 12
4.4.15.1 Removing the Release Solenoid.......................................................................................................................................... 4- 12
4.4.16 Separation Pad ....................................................................................................................................................4- 12
4.4.16.1 Removing the Separation Pad ............................................................................................................................................. 4- 12
Chapter 5 Laser Exposure
5.1 Overview/Configuration ..............................................................................................................................5- 1
5.1.1 Specifications and Control Mechanism ...................................................................................................................5- 1
5.1.2 Main Components ...................................................................................................................................................5- 2
5.2 Parts Replacement Procedure ...................................................................................................................5- 3
5.2.1 Laser/Scanner Unit..................................................................................................................................................5- 3
5.2.1.1 Removing the Laser Scanner Unit .......................................................................................................................................... 5- 3
Chapter 6 Image Formation
6.1 Overview/Configuration ..............................................................................................................................6- 1
6.1.1 Specifications and Control Mechanism ...................................................................................................................6- 1
6.2 Image Formation Process ..........................................................................................................................6- 1
6.2.1 Reproduction Processes .........................................................................................................................................6- 1
6.3 Parts Replacement Procedure ...................................................................................................................6- 3
6.3.1 Transfer Charging Roller .........................................................................................................................................6- 3
6.3.1.1 Removing the Transfer Charging Roller .................................................................................................................................. 6- 3
Chapter 7 Pickup and Feed System
7.1 Overview/Configuration ..............................................................................................................................7- 1
7.1.1 Outline .....................................................................................................................................................................7- 1
7.2 Detection Jams...........................................................................................................................................7- 2
7.2.1 Jam Detection Outline ............................................................................................................................................. 7- 2
7.2.1.1 Outline...................................................................................................................................................................................... 7- 2
7.2.1.2 Types of Jams.......................................................................................................................................................................... 7- 2
7.3 Cassette Pickup Unit ..................................................................................................................................7- 3
7.3.1 Outline .....................................................................................................................................................................7- 3
7.3.2 Retry Pickup ............................................................................................................................................................7- 3
7.3.3 Detecting the Size of Paper.....................................................................................................................................7- 3
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