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Contents

7.1 Construction...................................................................................................................................................................7-1

7.1.1 Outline of the Laser Exposure System......................................................................................................................................... 7-1

7.1.2 Outline of the Laser Exposure System......................................................................................................................................... 7-1

7.2 Basic Sequence ..............................................................................................................................................................7-3

7.2.1 Basic Sequence of Operations (laser exposure system)............................................................................................................... 7-3

7.2.2 Basic Sequence ............................................................................................................................................................................ 7-3

7.3 Various Controls ............................................................................................................................................................7-4

7.3.1 Controlling the Laser Activation Timing..................................................................................................................................... 7-4

7.3.1.1 Flow of the BD Signal.....................................................................................................................................................................................7-4

7.3.2 Controlling the Intensity of Laser Light ...................................................................................................................................... 7-4

7.3.2.1 Outline.............................................................................................................................................................................................................7-4

7.3.2.2 Controlling Laser Activation...........................................................................................................................................................................7-5

7.3.2.3 Controlling the Laser Intensity........................................................................................................................................................................7-6

7.3.3 Controlling the Laser Scanner Motor .......................................................................................................................................... 7-7

7.3.3.1 Outline.............................................................................................................................................................................................................7-7

7.4 Parts Replacement Procedure.........................................................................................................................................7-9

7.4.1 Laser Scanner Unit....................................................................................................................................................................... 7-9

7.4.1.1 Removing the Laser Unit ................................................................................................................................................................................7-9

7.4.1.2 Removing the Laser Unit ................................................................................................................................................................................7-9

7.4.1.3 Removing the Laser Unit ................................................................................................................................................................................7-9

7.4.1.4 Removing the Laser Unit ..............................................................................................................................................................................7-10

7.4.1.5 Points to Note When Replacing the Laser Unit ............................................................................................................................................7-11

7.4.1.6 Points to Note When Replacing the Laser Unit ............................................................................................................................................7-11

7.4.2 BD Unit...................................................................................................................................................................................... 7-11

7.4.2.1 Removing the BD Unit..................................................................................................................................................................................7-11

7.4.2.2 Removing the BD Unit..................................................................................................................................................................................7-11

Brand	Canon
Model	ImageRunner iR8500 Series
Category	All in One Printer
Language	English

Canon ImageRunner iR8500 Series User Manual

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