Canon MF8100 Series Service Manual

Contents

Canon MF8100 Series Service Manual Manual pdf 36 page image

Contents2.3.6 Drum Cartridge .......................................................................................................................................................................... 2-212.3.6.1 Outline .......................................................................................................................................................................................................... 2-212.3.6.2 Cleaning Roller Engaging Control ............................................................................................................................................................... 2-222.3.6.3 Memory Tag ................................................................................................................................................................................................. 2-232.3.6.4 Detecting the ITB Home Position................................................................................................................................................................. 2-242.3.6.5 Drum Cartridge Presence Detection ............................................................................................................................................................. 2-252.3.6.6 Checking the Life of the Drum Cartridge ..................................................................................................................................................... 2-262.3.7 Secondary Transfer Mechanism ................................................................................................................................................ 2-272.3.7.1 Outline .......................................................................................................................................................................................................... 2-272.3.7.2 Secondary Transfer Roller Engaging Control .............................................................................................................................................. 2-282.3.7.3 Secondary Roller Position Detection ............................................................................................................................................................ 2-292.4 Pickup and Feed System.............................................................................................................................................. 2-302.4.1 Overview/Configuration ............................................................................................................................................................ 2-302.4.1.1 Overview....................................................................................................................................................................................................... 2-302.4.1.2 Pickup/Feeding Assembly ............................................................................................................................................................................ 2-312.4.2 Other Control ............................................................................................................................................................................. 2-322.4.2.1 Skew Correction Function ............................................................................................................................................................................ 2-322.4.2.2 Feed Speed Control....................................................................................................................................................................................... 2-322.4.2.3 Detecting the Machine Inside Temperature.................................................................................................................................................. 2-322.4.3 Detection Jams ........................................................................................................................................................................... 2-332.4.3.1 Jam Detection Outline .................................................................................................................................................................................. 2-332.4.3.1.1 Outline .................................................................................................................................................................................................. 2-332.4.3.2 Delay Jams .................................................................................................................................................................................................... 2-332.4.3.2.1 Pickup Delay Jam ................................................................................................................................................................................. 2-332.4.3.2.2 Delivery Delay Jam............................................................................................................................................................................... 2-332.4.3.3 Stationary Jams ............................................................................................................................................................................................. 2-332.4.3.3.1 Pick-up Stationary Jam ......................................................................................................................................................................... 2-332.4.3.3.2 Delivery Stationary Jam........................................................................................................................................................................ 2-332.4.3.4 Other Jams .................................................................................................................................................................................................... 2-332.4.3.4.1 Fixing Unit Wrapping Jam ................................................................................................................................................................... 2-332.4.3.4.2 Door Open Jam ..................................................................................................................................................................................... 2-332.4.3.4.3 Residual Paper Jam ............................................................................................................................................................................... 2-332.4.4 Cassette Pickup Unit .................................................................................................................................................................. 2-342.4.4.1 Pickup from the Cassette .............................................................................................................................................................................. 2-342.4.5 Manual Feed Pickup Unit .......................................................................................................................................................... 2-342.4.5.1 Multi-purpose Tray Pick-up.......................................................................................................................................................................... 2-342.5 Fixing Unit .................................................................................................................................................................. 2-342.5.1 Overview/Configuration ............................................................................................................................................................ 2-342.5.1.1 Outline .......................................................................................................................................................................................................... 2-342.5.2 Various Control Mechanisms .................................................................................................................................................... 2-352.5.2.1 Controlling the Temperature of the Fixing Unit ........................................................................................................................................... 2-352.5.2.1.1 Heater Temperature Control ................................................................................................................................................................. 2-352.5.3 Protection Function.................................................................................................................................................................... 2-352.5.3.1 Flicker prevention function........................................................................................................................................................................... 2-352.5.3.2 Protective Function ....................................................................................................................................................................................... 2-352.5.3.3 Fixing Unit Failure Detection ....................................................................................................................................................................... 2-362.6 Engine Control System................................................................................................................................................ 2-362.6.1 Construction............................................................................................................................................................................... 2-362.6.1.1 Overview....................................................................................................................................................................................................... 2-362.6.2 DC Controller (DCNT) .............................................................................................................................................................. 2-372.6.2.1 Outline .......................................................................................................................................................................................................... 2-372.6.2.2 Operations ..................................................................................................................................................................................................... 2-372.6.2.3 Controlling the Motors and Fans .................................................................................................................................................................. 2-382.6.2.4 Main Motor Control...................................................................................................................................................................................... 2-382.6.2.5 Developing Rotary Motor Control................................................................................................................................................................ 2-392.6.2.6 Cooling Fan................................................................................................................................................................................................... 2-402.6.3 System Controller (SCNT) ........................................................................................................................................................ 2-412.6.3.1 Outline .......................................................................................................................................................................................................... 2-412.6.3.2 Canon Advanced Printing Technology (CARPS) ..................................................................................................................................... 2-41