Canon imageRUNNER ADVANCE C255 Series Service Manual page 5

Pickup Feed System........................................................................................................................... 34
Controller System..............................................................................................................................39
Overview............................................................................................................................................ 39
Startup Sequence............................................................................................................................... 41
Shutdown Sequence........................................................................................................................... 42
Motion Sensor.....................................................................................................................................42
Laser Exposure System.................................................................................................................... 43
Overview............................................................................................................................................ 43
Specifications..................................................................................................................................... 44
Laser ON/OFF Control.........................................................................................................................45
Horizontal Scanning Synchronization Control........................................................................................ 46
Vertical Scanning Synchronization Control............................................................................................47
Scanner Motor Control.........................................................................................................................48
APC (Auto Power Control)................................................................................................................... 49
BD Detection Correction Control.......................................................................................................... 50
Dustproof Shutter................................................................................................................................ 50
Image Formation System.................................................................................................................. 51
Overview............................................................................................................................................ 51
Primary Charging................................................................................................................................ 53
Drum Unit (Developing/Drum).............................................................................................................. 54
Transfer..............................................................................................................................................58
Drum Cleaning....................................................................................................................................64
Image Stabilization Control.................................................................................................................. 65
Toner Supply Assembly.......................................................................................................................67
Waste Toner Feeding Area.................................................................................................................. 74
Other Controls.................................................................................................................................... 76
Fixing System....................................................................................................................................79
Overview............................................................................................................................................ 79
Specifications..................................................................................................................................... 79
Component Parts................................................................................................................................ 79
Fixing temperature control................................................................................................................... 81
Standby Temperature Control.............................................................................................................. 82
Print Temperature Control....................................................................................................................83
Down Sequence Control...................................................................................................................... 84
Fixing Film Unit Engagement/Disengagement Control........................................................................... 86
Pre-fixing Arch Level Control................................................................................................................87
Arch Sensor Control............................................................................................................................ 88
Protection Function............................................................................................................................. 89
Pickup Feed System......................................................................................................................... 91
Overview............................................................................................................................................ 91
Cassette Pickup Assembly...................................................................................................................94
Multi-purpose Tray Pickup Assembly.................................................................................................... 98
Fixing/Registration Assembly............................................................................................................... 99
Delivery Assembly.............................................................................................................................101
Reverse/Duplex Assembly................................................................................................................. 102
Jam Detection...................................................................................................................................105
External Auxiliary System................................................................................................................108
Software counter............................................................................................................................... 108
Fan.................................................................................................................................................. 110
Power supply.................................................................................................................................... 112
Power-saving Function...................................................................................................................... 112
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