ContentsContents6.1 Construction ...................................................................................................................................................................6-16.1.1 Specifications/Control Mechanisms/Functions ........................................................................................................................... 6-16.1.2 Major Components....................................................................................................................................................................... 6-16.1.3 Control System Configuration ..................................................................................................................................................... 6-26.2 Basic Sequence ..............................................................................................................................................................6-26.2.1 Basic Sequence ............................................................................................................................................................................ 6-26.3 Various Control..............................................................................................................................................................6-36.3.1 Controlling the Laser Activation Timing..................................................................................................................................... 6-36.3.1.1 ON/OFF Control .............................................................................................................................................................................................6-36.3.1.2 Main Scan Sync Control .................................................................................................................................................................................6-46.3.1.3 Sub Scan Sync Control....................................................................................................................................................................................6-56.3.2 Controlling the Intensity of Laser Light ...................................................................................................................................... 6-66.3.2.1 APC Control ...................................................................................................................................................................................................6-66.3.2.2 PWM Control .................................................................................................................................................................................................6-66.3.3 Controlling the Laser Scanner Motor .......................................................................................................................................... 6-66.3.3.1 Laser Scanner Motor Control .........................................................................................................................................................................6-66.3.4 Controlling the Laser Shutter....................................................................................................................................................... 6-76.3.4.1 Laser Shutter Control .....................................................................................................................................................................................6-76.4 Parts Replacement Procedure.........................................................................................................................................6-96.4.1 Laser Scanner Unit....................................................................................................................................................................... 6-96.4.1.1 Preparation for Removing the Laser Scanner Unit .........................................................................................................................................6-96.4.1.2 Removing the Laser Scanner Unit ..................................................................................................................................................................6-9