Canon iR C6800 Series, Руководство по обслуживанию

Страница: 237 / 1404

Contents
Contents
6.1 Construction ....................................................................................................................................................... 61
6.1.1 Specifications, Control Mechanisms, and Functions .................................................................................. 61
6.1.2 Major Components ...................................................................................................................................... 62
6.1.3 Construction of the Control System ............................................................................................................ 63
6.2 Basic Sequence................................................................................................................................................... 64
6.2.1 Basic Sequence of Operation ...................................................................................................................... 64
6.3 Various Control .................................................................................................................................................. 65
6.3.1 Controlling the Laser Activation Timing .................................................................................................... 65
6.3.1.1 Turning On and Off the Laser Unit ...................................................................................................... 65
6.3.1.2 Controlling the Synchronization in Main Scanning Direction ............................................................. 66
6.3.1.3 Controlling the Synchronization in Sub Scanning Direction ............................................................... 67
6.3.2 Controlling the Intensity of Laser Light...................................................................................................... 68
6.3.2.1 APC Control ......................................................................................................................................... 68
6.3.2.2 PWM Control ....................................................................................................................................... 68
6.3.3 Controlling the Laser Scanner Motor .......................................................................................................... 69
6.3.3.1 Controlling the Laser Scanner Motor ................................................................................................... 69
6.3.4 Controlling the Laser Shutter .................................................................................................................... 610
6.3.4.1 Controlling the Laser Shutter ............................................................................................................. 610
6.4 Parts Replacement Procedure ........................................................................................................................... 611
6.4.1 Laser Scanner Unit .................................................................................................................................... 611
6.4.1.1 Removing the Left Cover (upper) ...................................................................................................... 611
6.4.1.2 Removing the Delivery Cover............................................................................................................ 611
6.4.1.3 Removing the Left Cover (middle) .................................................................................................... 611
6.4.1.4 Removing the HV2 PCB .................................................................................................................... 611
6.4.1.5 Removing the Laser Scanner Unit...................................................................................................... 612
6.4.1.6 Points to Note When Replacing the Laser Scanner Unit.................................................................... 613
6.4.1.7 Cleaning the Laser Scanner Unit........................................................................................................ 613