Canon 7086 Series Service Manual - page 297
Contents
Contents
8.1 Construction ...................................................................................................................................................................8-1
8.1.1 Specifications and Construction .................................................................................................................................................. 8-1
8.1.2 Arrangement of Rollers and Sensors ........................................................................................................................................... 8-1
8.1.3 Control System............................................................................................................................................................................. 8-2
8.1.4 Controlling the Pickup Motor (M2) ............................................................................................................................................. 8-3
8.1.5 Index Paper Attachment............................................................................................................................................................... 8-4
8.2 Basic Sequence ..............................................................................................................................................................8-5
8.2.1 Right Deck ................................................................................................................................................................................... 8-5
8.2.2 Pickup from the cassette 4 ........................................................................................................................................................... 8-5
8.3 Detecting Jams ...............................................................................................................................................................8-6
8.3.1 Jam Detection Outline.................................................................................................................................................................. 8-6
8.3.1.1 Outline.............................................................................................................................................................................................................8-6
8.3.2 Delay Jams ................................................................................................................................................................................... 8-7
8.3.2.1 Cassette Pickup (Right deck, Left deck, cassette 3, 4)....................................................................................................................................8-7
8.3.2.2 Other Delay Jams ............................................................................................................................................................................................8-7
8.3.3 Stationary Jams ............................................................................................................................................................................ 8-8
8.3.3.1 Common Stationary Jams ...............................................................................................................................................................................8-8
8.3.3.2 Stationary Jam at Power-On............................................................................................................................................................................8-9
8.4 Cassette Pick-Up Unit ....................................................................................................................................................8-9
8.4.1 Outline.......................................................................................................................................................................................... 8-9
8.4.2 Detecting the Presence/Absence of Paper.................................................................................................................................. 8-10
8.4.3 Detecting the Level of Paper...................................................................................................................................................... 8-11
8.4.4 Cassette 3/4 ................................................................................................................................................................................ 8-12
8.4.5 Markings on the Width Guide Rail ............................................................................................................................................ 8-13
8.4.6 Paper Size................................................................................................................................................................................... 8-13
8.5 Manual Feed Pickup Unit ............................................................................................................................................8-16
8.5.1 Pickup Operation ....................................................................................................................................................................... 8-16
8.5.2 Detecting the Paper Size ............................................................................................................................................................ 8-16
8.6 Deck .............................................................................................................................................................................8-17
8.6.1 Outline........................................................................................................................................................................................ 8-17
8.6.2 Lifter Limiter (deck right/left) ................................................................................................................................................... 8-18
8.6.3 Detecting the Presence/Absence of Paper.................................................................................................................................. 8-19
8.6.4 Detecting the Level of Paper...................................................................................................................................................... 8-20
8.6.5 Cassette Deck Right/Left ........................................................................................................................................................... 8-21
8.7 Registration Unit ..........................................................................................................................................................8-22
8.7.1 Outline........................................................................................................................................................................................ 8-22
8.7.2 Sequence of Operations (registration brake).............................................................................................................................. 8-22
8.8 Duplex Feeding Unit ....................................................................................................................................................8-23
8.8.1 Copying on the First Side .......................................................................................................................................................... 8-23
8.8.2 Copying on the Second Side ...................................................................................................................................................... 8-23
8.8.3 Sequence of Operations ............................................................................................................................................................. 8-24
8.8.4 Controlling the reversal motor (M11)........................................................................................................................................ 8-24
8.8.5 Controlling the duplexing feeder motor (M12) ......................................................................................................................... 8-25
8.8.6 No-Stacking Operation .............................................................................................................................................................. 8-26
8.8.7 Detecting the Horizontal Registration Position ......................................................................................................................... 8-30
8.8.8 Controlling the Horizontal Registration Motor (M15) .............................................................................................................. 8-32
8.9 Delivery........................................................................................................................................................................8-33
8.9.1 Reversal Delivery....................................................................................................................................................................... 8-33
8.10 Detecting the Double-Feed ........................................................................................................................................8-34
8.10.1 Detecting Double Feeding ....................................................................................................................................................... 8-34