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

5.1.1 Overview ..................................................................................................................................................... 5-1

5.1.2 Specifications and Control Mechanism....................................................................................................... 5-1

5.1.3 Specifications and Control Mechanism....................................................................................................... 5-1

5.1.4 Main Components ....................................................................................................................................... 5-1

5.1.5 Control System Configuration..................................................................................................................... 5-2

5.2 Various Controls................................................................................................................................................. 5-3

5.2.1 Controlling the Laser Activation Timing .................................................................................................... 5-3

5.2.1.1 Laser Emission ON/OFF Control......................................................................................................... 5-3

5.2.1.2 Laser Emission ON/OFF Control......................................................................................................... 5-3

5.2.1.3 Horizontal Synchronization Control..................................................................................................... 5-4

5.2.1.4 Horizontal Synchronization Control..................................................................................................... 5-4

5.2.2 Controlling the Intensity of Laser Light...................................................................................................... 5-4

5.2.2.1 Automatic Photocurrent Control (APC)............................................................................................... 5-4

5.2.3 Controlling the Laser Scanner Motor .......................................................................................................... 5-4

5.2.3.1 Laser Scanner Motor Control ............................................................................................................... 5-4

5.2.4 Controlling the Laser Shutter ...................................................................................................................... 5-5

5.2.4.1 Laser Shutter Control ........................................................................................................................... 5-5

5.3 Parts Replacement Procedure............................................................................................................................. 5-7

5.3.1 Laser Scanner Unit ...................................................................................................................................... 5-7

5.3.1.1 Removing the Rear Cover .................................................................................................................... 5-7

5.3.1.2 Removing the Right Cover (Lower)..................................................................................................... 5-7

5.3.1.3 Removing the Delivery Tray ................................................................................................................ 5-7

5.3.1.4 Removing the Laser Scanner Unit........................................................................................................ 5-7

Contents

Table of Contents