Canon iR8500 Service Manual page 29

CONTENTS
Contents
CHAPTER 1 INTRODUCTION
1 Features ............................................... 1-1
1.1 High-Speed,
High-Quality Images .................. 1-1
1.2 High Durability,
High Reliability ......................... 1-1
1.3 High-Performance Controller,
Large-Capacity Hard Disk for
High-Level Processing ............... 1-1
1.4 Ease of Use ................................ 1-1
1.5 Large Source of Paper ................ 1-1
1.6 Various Delivery Handling
(w/ options) ................................ 1-2
1.7 High-Level Printing
Functions Supporting
Uses on a Network ..................... 1-2
Specifications ...................................... 1-3
2.1 Copier ......................................... 1-3
HAPTER 2 NEW FUNCTION
Basic Construction .............................. 2-1
1.1 Basic Construction Outline
(iR8500) ..................................... 2-1
1.2 Basic Construction Outline
(iR7200) ..................................... 2-2
1.3 Inputs to and Outputs from
the Major PCBs (iR8500) .......... 2-3
1.4 Inputs to and Outputs from
the Major PCBs (iR7200) .......... 2-4
2 Original Exposure System
(iR8500) .............................................. 2-5
2.1 Outline ....................................... 2-5
2.2 Changes in the Original
Exposure System ....................... 2-6
2.3 Enlargement/
Reduction Method ..................... 2-7
2.4 Preventing Overheating of
the Scanner Motor ...................... 2-8
2.5 Arrangement of the PCBs .......... 2-9
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2.1.1 Type ..................................... 1-3
2.1.2 Methods ............................... 1-3
2.1.3 Functions ............................. 1-4
2.1.4 Others ................................ 1-10
2.2 Side Paper Deck-M1 ................ 1-13
3 Names of Parts .................................. 1-14
3.1 External View (iR8500) ........... 1-14
3.2 External View (iR7200) ........... 1-16
3.3 Cross Section (iR8500) ............ 1-18
3.4 Cross Section (iR7200) ............ 1-20
4 Using the Machine ............................ 1-22
4.1 Power Switch ........................... 1-22
4.1.1 iR8500 ............................... 1-22
4.1.2 iR7200 ............................... 1-23
4.2 Control Panel ........................... 1-24
4.3 Special Features ....................... 1-25
4.4 User Mode ................................ 1-26
2.6 Stabilizing the Scanning
Lamp ........................................ 2-10
2.7 Detecting the State
(open/closed) of the ADF ......... 2-10
2.8 Detecting Dust in Stream
Reading Mode .......................... 2-12
2.9 Disassembly/Assembly
(iR8500) ................................... 2-14
2.9.1 No. 1 Mirror Base
Assembly ........................... 2-15
2.9.2 Scanner Drive Assembly .... 2-19
2.9.3 PCBs .................................. 2-27
2.9.4 Others ................................ 2-33
3 Original Exposure System
(iR7200) ............................................ 2-41
3.1 Outline ..................................... 2-41
3.2 Change in the Original
Exposure System ..................... 2-43
3.3 Arrangement of the PCBs ........ 2-44