Canon iR4570 Series Service Manual page 15

7.12.10.12 Removing the Toner Feedscrew Motor....................................................................................... 7- 71
7.12.11 Static Charge Eliminator....................................................................................................................... 7- 71
7.12.11.1 Removing the Static Eliminator .................................................................................................... 7- 71
Chapter 8 Pickup/Feeding System
8.1 Construction ...................................................................................................................................................... 8- 1
8.1.1Specifications, Controls, and Functions ...................................................................................................... 8- 1
8.1.2Specifications, Controls, and Functions ...................................................................................................... 8- 2
8.1.3Division into Blocks .................................................................................................................................... 8- 3
8.1.4Division into Blocks .................................................................................................................................... 8- 4
8.1.5Arrangement of Rollers ............................................................................................................................... 8- 5
8.1.6Arrangement of Rollers ............................................................................................................................... 8- 7
8.1.7Diagram of Paper Paths (printer on its own) ............................................................................................... 8- 8
8.1.8Paper Path (printer unit on its own)............................................................................................................. 8- 9
8.1.9Diagram of Paper Paths (w/ copy tray ) .................................................................................................... 8- 10
8.1.10Diagram of Paper Paths (w/ 3 Way Unit-A1 /copy tray) ........................................................................ 8- 11
8.1.11Paper path (w/ expansion output kit, output tray) ................................................................................... 8- 12
8.1.12Diagram of Paper Paths (w/ Finisher-S1/copy tray) ............................................................................... 8- 13
8.1.13Paper Path (w/ Finer-S1, output tray)...................................................................................................... 8- 14
8.1.14Diagram of Paper Paths (w/ Finisher-Q3/Saddle Finisher-Q4)............................................................... 8- 15
8.1.15Arrangement of Sensors .......................................................................................................................... 8- 16
8.1.16Arrangement of Sensors .......................................................................................................................... 8- 17
8.1.17Route of Drive ......................................................................................................................................... 8- 19
8.1.18Route of Drive ......................................................................................................................................... 8- 19
8.2 Basic Sequence................................................................................................................................................ 8- 22
8.2.1Basic Sequence ......................................................................................................................................... 8- 22
8.2.2Increase in Speed....................................................................................................................................... 8- 22
8.2.3Acceleration Intervals................................................................................................................................ 8- 25
8.2.4Increase in Speed....................................................................................................................................... 8- 27
8.3 Detecting Jams ................................................................................................................................................ 8- 30
8.3.1 Delay Jams ................................................................................................................................................ 8- 30
8.3.1.1 Delay Jam Outside the Cassette Pickup Assembly ........................................................................... 8- 30
8.3.1.2 Delay Jam in the Cassette Pickup Assembly..................................................................................... 8- 30
8.3.2 Stationary Jams ......................................................................................................................................... 8- 31
8.3.2.1 Common Stationary Jam ................................................................................................................... 8- 31
8.3.2.2 Stationary Jam at Power-On.............................................................................................................. 8- 32
8.3.3 Other Jams ................................................................................................................................................ 8- 32
8.3.3.1 Door Open Jam.................................................................................................................................. 8- 32
8.4 Cassette Pick-Up Unit ..................................................................................................................................... 8- 33
8.4.1Overview ................................................................................................................................................... 8- 33
8.4.2Basic Sequence ......................................................................................................................................... 8- 34
8.4.3Identifying the Paper Size ......................................................................................................................... 8- 34
8.4.4Setting Up the Universal Cassette ............................................................................................................. 8- 36
8.4.5Paper Level Sensor .................................................................................................................................... 8- 37
8.5 Manual Feed Pickup Unit................................................................................................................................ 8- 41
8.5.1Overview ................................................................................................................................................... 8- 41
8.5.2Basic Sequence of Operation .................................................................................................................... 8- 42
8.5.3Identifying the Paper Size ......................................................................................................................... 8- 42
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