Canon MF6500 Series Service Manual page 8

Contents
2.1.9 Network PCB Åiif equipped with network functionsÅj .............................................................................................2- 4
2.1.10 NCU PCB (if equipped with fax functions) .............................................................................................................2- 4
2.1.11 Modular Jack PCB (if equipped with fax functions)................................................................................................2- 4
2.2 Basic Sequence ......................................................................................................................................... 2- 4
2.2.1 Basic Sequence .......................................................................................................................................................2- 4
Chapter 3 Original Exposure System
3.1 Basic Constraction ..................................................................................................................................... 3- 1
3.1.1 Specifications, Control Methods, and Functions......................................................................................................3- 1
3.1.2 Major Components...................................................................................................................................................3- 1
3.2 Basic Sequence ......................................................................................................................................... 3- 2
3.2.1 Basic Sequence at Power-on...................................................................................................................................3- 2
3.2.2 Basic Sequence after Depression of Start Key (Book mode, One Sheet of original) ..............................................3- 2
3.2.3 Basic Sequence after Depression of Start Key (ADF Mode, One Sheet of Original)...............................................3- 3
3.3 Various Control........................................................................................................................................... 3- 3
3.3.1 Enlargement/Reduction ...........................................................................................................................................3- 3
3.3.1.1 Magnification Change in Vertical Scan Direction ..................................................................................................................... 3- 3
3.3.1.2 Magnification Change in Horizontal Scan Direction................................................................................................................. 3- 3
3.3.2 Dirt Sensor Control ..................................................................................................................................................3- 4
3.3.2.1 Outline...................................................................................................................................................................................... 3- 4
3.4 Parts Replacement Procedure ................................................................................................................... 3- 5
3.4.1 Copyboard Glass .....................................................................................................................................................3- 5
3.4.1.1 Removing the Copyboard Glass .............................................................................................................................................. 3- 5
3.4.2 Analog Processor PCB ............................................................................................................................................3- 5
3.4.2.1 Removing the Analog Processor PCB ..................................................................................................................................... 3- 5
3.4.3 Reader Motor ...........................................................................................................................................................3- 5
3.4.3.1 Removing the Reader Motor.................................................................................................................................................... 3- 5
3.4.4 Contact Sensor ........................................................................................................................................................3- 5
3.4.4.1 Removing the Contact Sensor ................................................................................................................................................. 3- 5
3.4.4.2 Procedure after Replacing the CS ........................................................................................................................................... 3- 6
3.4.5 Reader Home Position Sensor ................................................................................................................................3- 6
3.4.5.1 Removing the Reader Home Position Sensor ......................................................................................................................... 3- 6
Chapter 4 Original Feeding System
4.1 Basic Constraction ..................................................................................................................................... 4- 1
4.1.1 Outline......................................................................................................................................................................4- 1
4.1.2 Drive Mechanism .....................................................................................................................................................4- 1
4.2 Basic Operation .......................................................................................................................................... 4- 2
4.2.1 Outline of Operation Mode.......................................................................................................................................4- 2
4.2.2 Document Size Detection ........................................................................................................................................4- 3
4.2.3 Paper Pickup Operation...........................................................................................................................................4- 4
4.2.4 Reversal Operation ..................................................................................................................................................4- 4
4.2.5 Delivery Operation ...................................................................................................................................................4- 5
4.3 Detection Jams........................................................................................................................................... 4- 6
4.3.1 Outline......................................................................................................................................................................4- 6
4.4 ADF ............................................................................................................................................................ 4- 7
4.4.1 ADF..........................................................................................................................................................................4- 7
4.4.1.1 Removing the ADF................................................................................................................................................................... 4- 7
4.4.2 External Covers .......................................................................................................................................................4- 7
4.4.2.1 Removing the Front Cover....................................................................................................................................................... 4- 7
4.4.2.2 Removing the Rear Cover ....................................................................................................................................................... 4- 7
4.4.2.3 Detaching the Open/Close cover ............................................................................................................................................. 4- 8
4.4.2.4 Removing the Pickup Tray....................................................................................................................................................... 4- 8
4.4.3 Feed Frame Unit ......................................................................................................................................................4- 9
4.4.3.1 Removing the Feed Frame Unit............................................................................................................................................... 4- 9
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