Canon iR1200 Series Service Manual page 155

Contents
7.1 Construction ....................................................................................................................................................... 7-1
7.1.1 Outline ......................................................................................................................................................... 7-1
7.2 Detecting Jams ................................................................................................................................................... 7-3
7.2.1 Jam Detection Outline ................................................................................................................................. 7-3
7.2.1.1 Outline .................................................................................................................................................. 7-3
7.2.1.2 Types of Jams ....................................................................................................................................... 7-3
7.2.2 Delivery Jams .............................................................................................................................................. 7-3
7.2.2.1 Pickup Delay Jam ................................................................................................................................. 7-3
7.2.2.2 Delivery Sensor Leading Edge Delay Jam........................................................................................... 7-3
7.2.2.3 Delivery Sensor Trailing Edge Delay Jam ........................................................................................... 7-3
7.2.3 Stationary Jams............................................................................................................................................ 7-3
7.2.3.1 Paper Leading Edge Sensor Stationary Jam......................................................................................... 7-3
7.2.3.2 Delivery Sensor Stationary Jam ........................................................................................................... 7-3
7.2.4 Other Jams ................................................................................................................................................... 7-4
7.2.4.1 Fixing Wrap Jam .................................................................................................................................. 7-4
7.2.4.2 Auto Delivery Jam................................................................................................................................ 7-4
7.2.4.3 Door Open Jam..................................................................................................................................... 7-4
7.3 Cassette Pick-Up Unit ........................................................................................................................................ 7-5
7.3.1 Outline ......................................................................................................................................................... 7-5
7.3.2 Retry Pickup ................................................................................................................................................ 7-5
7.3.3 Detecting the Size of Paper ......................................................................................................................... 7-6
7.4 Manual Feed Pickup Unit................................................................................................................................... 7-7
7.4.1 Outline ......................................................................................................................................................... 7-7
7.4.2 Retry Pickup ................................................................................................................................................ 7-7
7.4.3 Detecting the Size of Paper ......................................................................................................................... 7-8
7.5 Delivery .............................................................................................................................................................. 7-9
7.5.1 Outline ......................................................................................................................................................... 7-9
7.5.2 Auto Delivery Control................................................................................................................................. 7-9
7.5.3 Reducing the Copying Speed .................................................................................................................... 7-10
7.6 Parts Replacement Procedure........................................................................................................................... 7-11
7.6.1 Pickup Roller ............................................................................................................................................. 7-11
7.6.1.1 Removing the Cassette Pickup Roller ................................................................................................ 7-11
7.6.2 Separation Pad ........................................................................................................................................... 7-12
7.6.2.1 Removing the Right Cover................................................................................................................. 7-12
7.6.2.2 Removing the Manual Feed Tray (upper) .......................................................................................... 7-12
7.6.2.3 Removing the Manual Feed Tray (lower) .......................................................................................... 7-12
7.6.2.4 Removing the Separation Pad ............................................................................................................ 7-12
7.6.3 Cassette Pickup Solenoid .......................................................................................................................... 7-12
7.6.3.1 Removing the Rear Cover .................................................................................................................. 7-12
7.6.3.2 Removing the Printer Controller PCB................................................................................................ 7-13
7.6.3.3 Removing the Image Processor PCB ................................................................................................. 7-13
7.6.3.4 Removing the Cassette Pickup Solenoid............................................................................................ 7-13
7.6.4 Manual Feed (Upper) ................................................................................................................................ 7-14
7.6.4.1 Removing the Right Cover................................................................................................................. 7-14
Contents