Canon iR1200 Series Service Manual page 8

Contents
3.1.5Control Panel PCB....................................................................................................................................... 3- 5
3.1.6Power Supply PCB ...................................................................................................................................... 3- 5
3.1.7Analog Processor PCB ................................................................................................................................ 3- 5
3.1.8Sensor PCB .................................................................................................................................................. 3- 5
3.1.9Laser Driver/BD PCB.................................................................................................................................. 3- 5
3.1.10Main Motor/Scanner Motor Driver ........................................................................................................... 3- 5
3.1.11Printer Controller PCB .............................................................................................................................. 3- 5
3.1.12NCU PCB (if equipped with fax functions) .............................................................................................. 3- 6
3.1.13Modular Jack PCB (if equipped with fax functions) ................................................................................. 3- 6
3.1.14Sensor Relay PCB...................................................................................................................................... 3- 6
3.1.15Controlling the Main Motor....................................................................................................................... 3- 7
3.1.16Reproduction Processes ............................................................................................................................. 3- 7
3.2 Basic Sequence ................................................................................................................................................ 3- 11
3.2.1Basic Sequence of Operations at Power-On .............................................................................................. 3- 11
Chapter 4 Original Exposure System
4.1 Construction....................................................................................................................................................... 4- 1
4.1.1Major Components ...................................................................................................................................... 4- 1
4.2 Parts Replacement Procedure ............................................................................................................................ 4- 2
4.2.1 Reader Unit ................................................................................................................................................. 4- 2
4.2.2 Copyboard glass .......................................................................................................................................... 4- 5
4.2.3 Sensor PCB ................................................................................................................................................. 4- 5
4.2.4 Scanner Motor ............................................................................................................................................. 4- 7
4.2.5 Contact sensor ............................................................................................................................................. 4- 8
Chapter 5 Laser Exposure
5.1 Construction....................................................................................................................................................... 5- 1
5.1.1Outline ......................................................................................................................................................... 5- 1
5.2 Parts Replacement Procedure ............................................................................................................................ 5- 2
5.2.1 Laser Scanner Unit ...................................................................................................................................... 5- 2
Chapter 6 Image Formation
6.1 Construction....................................................................................................................................................... 6- 1
6.1.1Outline ......................................................................................................................................................... 6- 1
6.2 Parts Replacement Procedure ............................................................................................................................ 6- 2
6.2.1 Developing Cylinder ................................................................................................................................... 6- 2
6.2.2 Developing Blade ........................................................................................................................................ 6- 3
6.2.3 Transfer Charging Roller ............................................................................................................................ 6- 5
6.2.4 Toner Bottle Sensor..................................................................................................................................... 6- 6
6.2.5 Waste Toner Full Sensor ............................................................................................................................. 6- 8
Chapter 7 Pickup/Feeding System
7.1 Construction....................................................................................................................................................... 7- 1
7.1.1Outline ......................................................................................................................................................... 7- 1
7.2 Detecting Jams................................................................................................................................................... 7- 3