Canon DADF-AA1 Service Manual page 9

4.4.1.1 Removing the Pickup Roller Unit ....................................................................................................4- 4
4.4.1.2 Precaution about Pickup Roller Unit Installation ..........................................................................4- 4
4.4.2 Pickup Roller/Separation Roller..............................................................................................................4- 4
4.4.2.1 Removing the Pickup Roller/Feed Roller.......................................................................................4- 4
4.4.3 Separation Plate/Separation Pad ...........................................................................................................4- 5
4.4.3.1 Removing the Separation Pad ........................................................................................................4- 5
4.4.4 Upper Registration Roller ........................................................................................................................4- 5
4.4.4.1 Points to Note When Replacing the Upper Registration Roller .................................................4- 5
4.4.5 Lower Registration Roller ........................................................................................................................4- 5
4.4.5.1 Removing the Lower Registration Roller .......................................................................................4- 5
4.4.6 Delivery Reversing Roller (upper) ..........................................................................................................4- 7
4.4.6.1 Removing the Upper Delivery Reversal Roller .............................................................................4- 7
4.4.7 Read Roller 1.............................................................................................................................................4- 8
4.4.7.1 Removing the Read Roller 1 ...........................................................................................................4- 8
4.4.8 Read Roller 2.............................................................................................................................................4- 9
4.4.8.1 Removing the Read Roller 2 ...........................................................................................................4- 9
4.4.9 Platen Roller ............................................................................................................................................4- 11
4.4.9.1 Removing the Platen Roller ...........................................................................................................4- 11
4.4.10 Feeding Unit...........................................................................................................................................4- 12
4.4.10.1 Removing the Feed Unit...............................................................................................................4- 12
4.4.11 Feed Roller Guide.................................................................................................................................4- 13
4.4.11.1 Exchanging the Feed Roller Guide ...........................................................................................4- 13
4.4.12 Document Tray ......................................................................................................................................4- 13
4.4.12.1 Removing the Document Tray.....................................................................................................4- 13
4.5 Electrical System ...........................................................................................................................................4- 14
4.5.1 Fan ............................................................................................................................................................4- 14
4.5.1.1 Removing the Fan ...........................................................................................................................4- 14
4.5.1.2 Precaution about Fan Installation .................................................................................................4- 14
4.5.2 Inner Sensor of Feed Unit .....................................................................................................................4- 14
4.5.2.1 Removing the Sensor in the Feed Unit ........................................................................................4- 14
4.5.3 Document Width Volume .......................................................................................................................4- 16
4.5.3.1 Removing the Relay PCB ..............................................................................................................4- 16
4.5.4 Cover Open/Closed Sensor ..................................................................................................................4- 16
4.5.4.1 Removing the Cover Open/Closed Sensor .................................................................................4- 16
4.5.5 Document Set Sensor ............................................................................................................................4- 16
4.5.5.1 Removing the Document Set Sensor...........................................................................................4- 16
4.5.6 Document Length sensor.......................................................................................................................4- 17
4.5.6.1 Removing the Document Length Sensor.....................................................................................4- 17
4.5.7 Last Document Detection Sensor.........................................................................................................4- 17
4.5.7.1 Removing the Last Document Detection Sensor .......................................................................4- 17
4.5.8 Release Motor HP Sensor.....................................................................................................................4- 17
4.5.8.1 Removing the Release Motor HP Sensor ...................................................................................4- 17
4.5.9 Timing Sensor .........................................................................................................................................4- 17
4.5.9.1 Removing the Timing Sensor ........................................................................................................4- 17
4.5.10 Pressurization Solenoid .......................................................................................................................4- 17
4.5.10.1 Removing the Pressurization Solenoid ......................................................................................4- 17
4.5.11 LED PCB ................................................................................................................................................4- 18
4.5.11.1 Removing the LED PCB...............................................................................................................4- 18
4.5.12 ADF Driver PCB ....................................................................................................................................4- 18
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