Service manual

Contents
9.3.4 Image Processor PCB................................................................................................................................9- 14
9.3.5 Printer Controller PCB..............................................................................................................................9- 15
9.3.6 NCU PCB...............................................................................................................................................9- 15
9.3.7 Modular Jack PCB ....................................................................................................................................9- 16
9.3.8 Removing the Printer Power Supply PCB ................................................................................................9- 17
9.3.9 Reader Unit Slide Detecting Switch..........................................................................................................9- 20
9.3.10 Fans .........................................................................................................................................................9- 24
9.3.11 Motor of Main Drive Assembly..............................................................................................................9- 29
9.3.12 Right Door...............................................................................................................................................9- 35
Chapter 10 Original Feeding System
10.1 Basic Construcion..........................................................................................................................................10- 1
10.1.1Outline .....................................................................................................................................................10- 1
10.2 Basic Operation .............................................................................................................................................10- 2
10.2.1Picking Up and Moving Originals...........................................................................................................10- 2
10.2.2Moving Down the Original Pickup Roller and Moving Up the Original................................................10- 2
10.3 Detection Jams...............................................................................................................................................10- 4
10.3.1Outline .....................................................................................................................................................10- 4
10.3.2Types of Jams ..........................................................................................................................................10- 4
10.4 Parts Replacement Procedure ........................................................................................................................10- 6
10.4.1 ADF.........................................................................................................................................................10- 6
10.4.2 ADF Drive Unit.......................................................................................................................................10- 7
10.4.3 ADF Motor Unit......................................................................................................................................10- 9
10.4.4 Feeding Outside Guide..........................................................................................................................10- 12
10.4.5 Separation Roller Unit...........................................................................................................................10- 14
10.4.6 Separation Roller ..................................................................................................................................10- 18
10.4.7 Pickup Roller ........................................................................................................................................10- 22
10.4.8 Original Separation Pad ........................................................................................................................10- 25
10.4.9 Registration Roller ...............................................................................................................................10- 26
10.4.10 White Roller .......................................................................................................................................10- 28
10.4.11 Feed Roller .........................................................................................................................................10- 31
10.4.12 Original Feed Roller ...........................................................................................................................10- 34
10.4.13 Original Delivery Roller......................................................................................................................10- 37
10.4.14 Original Sensor....................................................................................................................................10- 41
10.4.15 Registration Sensor .............................................................................................................................10- 43
10.4.16 Original Delivery Sensor.....................................................................................................................10- 46
10.4.17 Slide Guide..........................................................................................................................................10- 49
10.4.18 Delivery Stacking Tray .......................................................................................................................10- 50
Chapter 11 Maintenance and Inspection
11.1 Periodically Replaced Parts ...........................................................................................................................11- 1
11.1.1Periodically Replaced Parts .....................................................................................................................11- 1
11.2 Durables and Consumables............................................................................................................................11- 2
11.2.1Durables...................................................................................................................................................11- 2
11.3 Scheduled Servicing Basic Procedure ...........................................................................................................11- 3
11.3.1Scheduled Servicing Chart ......................................................................................................................11- 3
11.4 Cleaning.........................................................................................................................................................11- 4