Table Of Contents - Canon DADF-G1 Service Manual

Contents
CHAPTER 1 GENERAL DESCRIPTION
1 Features ........................................ 1-1
1.1 Identifying the Size of
Originals ............................... 1-1
2 Specifications ............................... 1-2
3 Names of Parts .............................. 1-4
3.1 External View ........................ 1-4
3.2 Cross Section ........................ 1-4
4 Operating the Machine ................. 1-5
4.1 Original Set Indicator ........... 1-5
CHAPTER 2 OPERATIONS AND TIMING
1 Basic Construction ....................... 2-1
1.1 Outline of the Electrical
Circuitry ................................ 2-1
1.2 Communication with the
Host copier ............................ 2-2
1.3 Inputs to the DADF
Controller PCB ...................... 2-3
1.3.1 Inputs to the DADF
Controller PCB (1/2) ..... 2-3
1.3.2 Inputs to the DADF
Controller PCB (2/2) ..... 2-4
1.4 Outputs from the DADF
Controller PCB ..................... 2-5
1.4.1 Outputs from the DADF
Controller PCB (1/1) ..... 2-5
2 Basic Operations ........................... 2-6
2.1 Outline .................................. 2-6
2.2 Operations ............................. 2-7
2.2.1 Single-Sided Original
Mode ............................. 2-7
2.2.2 Double-Sided Original
Mode ............................. 2-8
2.3 Detecting Originals ............... 2-9
2.3.1 Outline ........................... 2-9
2.3.2 Detecting the Presence/
Absence of an
Original ....................... 2-10
COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000
4.2 Warnings and Actions to
Take ....................................... 1-6
4.3 Routine Maintenance by
the User ................................. 1-6
4.3.1 Copyboard glass ............ 1-6
4.3.2 Feed Belt ........................ 1-6
4.3.3 Others ............................ 1-6
4.3.4 Separation Belt and Feed
Roller ............................. 1-6
2.3.3 Detecting the Size of
Originals ...................... 2-10
2.3.4 Detecting the Trailing Edge
of the Last Original ..... 2-14
2.4 Picking Up Originals .......... 2-15
2.4.1 Outline ......................... 2-15
2.4.2 Pickup Operation ......... 2-15
2.5 Reversing Originals ............ 2-19
2.5.1 Operations ................... 2-19
2.5.2 Sequence of Operations
(reversal) ...................... 2-20
2.6 Delivery ............................... 2-21
2.6.1 Outline ......................... 2-21
2.6.2 Delivery Operations .... 2-22
2.7 Controlling the Pickup
Motor .................................. 2-25
2.7.1 Outline ......................... 2-25
2.7.2 Relationship Between the
Pickup Roller and the
Pickup Motor Drive Signal
(SMON), Pickup Motor
Rotation Direction Signal
(SDIR), and Pickup Motor
Rotation Speed Control
Signal (SMPWM) ....... 2-26
2.8 Controlling the Belt
Motor .................................. 2-27
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