Canon LaserBase MF3220 Series, Service Manual

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Contents
Contents
2.1 Document Feed and Exposure System...........................................................................................................................2-1
2.1.1 Overview/Configuration .............................................................................................................................................................. 2-1
2.1.1.1 Overview .........................................................................................................................................................................................................2-1
2.2 Laser Exposure...............................................................................................................................................................2-2
2.2.1 Overview/Configuration .............................................................................................................................................................. 2-2
2.2.1.1 Overview .........................................................................................................................................................................................................2-2
2.3 Image Formation ............................................................................................................................................................2-3
2.3.1 Overview/Configuration .............................................................................................................................................................. 2-3
2.3.1.1 Overview .........................................................................................................................................................................................................2-3
2.4 Pickup and Feed System ................................................................................................................................................2-4
2.4.1 Overview/Configuration .............................................................................................................................................................. 2-4
2.4.1.1 Overview .........................................................................................................................................................................................................2-4
2.4.2 Other Control ............................................................................................................................................................................... 2-4
2.4.2.1 Manual Pickup Control ...................................................................................................................................................................................2-4
2.4.2.2 Cassette Pickup Control ..................................................................................................................................................................................2-4
2.4.3 Detection Jams ............................................................................................................................................................................. 2-5
2.4.3.1 Jam Detection Outline.....................................................................................................................................................................................2-5
2.4.3.1.1 Type so Jams ...........................................................................................................................................................................................2-5
2.4.3.2 Delay Jams ......................................................................................................................................................................................................2-5
2.4.3.2.1 Pickup Delay Jam....................................................................................................................................................................................2-5
2.4.3.2.2 Delivery Delay Jam.................................................................................................................................................................................2-5
2.4.3.3 Stationary Jams ...............................................................................................................................................................................................2-5
2.4.3.3.1 Pickup Stationary Jam.............................................................................................................................................................................2-5
2.4.3.3.2 Delivery Stationary Jam..........................................................................................................................................................................2-5
2.4.3.4 Other Jams.......................................................................................................................................................................................................2-5
2.4.3.4.1 Wrap Jam.................................................................................................................................................................................................2-5
2.4.3.4.2 Initial Jam................................................................................................................................................................................................2-5
2.4.3.4.3 Cover Open Jam......................................................................................................................................................................................2-5
2.5 Fixing Unit .....................................................................................................................................................................2-6
2.5.1 Overview/Configuration .............................................................................................................................................................. 2-6
2.5.1.1 Overview .........................................................................................................................................................................................................2-6
2.5.2 Protection Function...................................................................................................................................................................... 2-6
2.5.2.1 Protective Mechanisms ...................................................................................................................................................................................2-6
2.5.2.2 Detecting a Fault in the Fixing Assembly.......................................................................................................................................................2-6
2.6 External and Controls.....................................................................................................................................................2-7
2.6.1 Power Supply ............................................................................................................................................................................... 2-7
2.6.1.1 Backup Battery................................................................................................................................................................................................2-7
2.6.1.1.1 Backup Battery........................................................................................................................................................................................2-7