Service manual

Contents
Contents
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