Canon iR5000i Service Manual page 111

Contents
CHAPTER 1 BASIC OPERATION
1. Functional Construction ................ 1-1R
2. Outline of Electrical Circuitry ....... 1-2R
2.1 Outline .................................... 1-2R
2.2 Reader Controller PCB ........... 1-2R
3. Basic Sequence of Operations ....... 1-3R
3.1 Basic Sequence of Operations at
Power-On ................................ 1-3R
CHAPTER 2 ORIGINAL EXPOSURE SYSTEM
1. Outline of Operations .................... 2-1R
1.1 Outline .................................... 2-1R
1.2 Sequence of Operations (original
exposure) ................................. 2-3R
1.2.1 Book Mode, 1 Original,
Copyboard Closed ............ 2-3R
1.2.2 Book Mode, 1 Original,
Copyboard Cover Open .... 2-4R
1.3 Enlargement/Reduction (zoom)
................................................ 2-5R
1.3.1 Changing the Reproduction Ra-
tio in Main Scanning Direction
.......................................... 2-5R
1.3.2 Changing the Reproduction Ra-
tio in Sub Scanning Direction
.......................................... 2-5R
2. Scanner Drive System ................... 2-6R
2.1 Outline .................................... 2-6R
2.2 Controlling the Scanner Motor
................................................ 2-7R
2.2.1 Controlling the Motor When
Scanning an Image ........... 2-7R
2.2.2 Reversing the Scanner After
Scanning in Main Reading Di-
rection ............................... 2-8R
3. Controlling the Scanning Lamp (LA2)
....................................................... 2-9R
3.1 Outline .................................... 2-9R
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001
3.2 Basic Sequence of Operations in
Book Mode ............................. 1-3R
4. Inputs to and Outputs from the Major
PCBs .............................................. 1-4R
4.1 Wiring of Major PCBs ............ 1-4R
4.2 Inputs to and Outputs from the
Reader Controller PCB ........... 1-5R
3.2 Scanning Lamp ....................... 2-9R
3.3 Turning On/Off the Lamp ....... 2-9R
3.4 Detecting an Error ................. 2-10R
4. Detecting the Size of Originals ... 2-11R
4.1 Outline .................................. 2-11R
4.2 Points of Detection ............... 2-11R
4.3 Outline of Detection ............. 2-11R
4.4 Outline of Detection Operation
.............................................. 2-12R
4.4.1 Book Mode, 1 Original,
Copyboard Cover Open .. 2-12R
4.4.2 Book Mode, 1 Original,
Copyboard Cover Close . 2-13R
5. Scanning Lamp ........................... 2-15R
5.1 Removing the Scanning Lamp
.............................................. 2-15R
5.2 Points to Note When Replacing the
Scanning Lamp ..................... 2-17R
5.3 After Replacing the Scanning Lamp
.............................................. 2-17R
6. Scanner Drive Block ................... 2-18R
6.1 Scanner Motor ...................... 2-18R
6.1.1 Removing the Scanner Motor
........................................ 2-18R
6.1.2 Mounting the Scanner Motor
........................................ 2-19R
6.2 Scanner System Drive Cable
.............................................. 2-20R
CONTENTS
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