Canon imagePRESS C1 Service Manual - page 12

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Contents

Chapter 5 Original Exposure System

5.1 Construction ...................................................................................................................................................................5-1

5.1.1 Specifications, Control Mechanisms, and Functions................................................................................................................... 5-1

5.1.2 Major Components....................................................................................................................................................................... 5-1

5.1.3 Construction of the Control System............................................................................................................................................. 5-3

5.1.4 Reader Controller PCB ................................................................................................................................................................ 5-3

5.2 Basic Sequence ..............................................................................................................................................................5-4

5.2.1 Basic Sequence of Operation at Power-On.................................................................................................................................. 5-4

5.2.2 Basic Sequence of Operation in Response to a Press on the Start Key ....................................................................................... 5-4

5.3 Various Control Mechanisms.........................................................................................................................................5-6

5.3.1 Controlling the Scanner Drive System ........................................................................................................................................ 5-6

5.3.1.1 Overview .........................................................................................................................................................................................................5-6

5.3.1.2 Controlling the Scanner Motor........................................................................................................................................................................5-6

5.3.2 Enlargement/Reduction................................................................................................................................................................ 5-7

5.3.2.1 Changing the Magnification in Main Scanning Direction ..............................................................................................................................5-7

5.3.2.2 Changing the Magnification in Sub Scanning Direction ................................................................................................................................5-7

5.3.3 Controlling the Scanning Lamp ................................................................................................................................................... 5-7