
COPYRIGHT © 2002 CANON INC.
2000 2000 2000 2000
CANON SmartBase PC1210D/1230D/1270D REV. 1 MAR. 2002
vii
CONTENTS
1 Basic Operation .................................. 4-1
Reproduction Processes ............. 4-1
Outline ................................. 4-1
Functional Construction ............ 4-4
Outline of the Electrical
Circuitry ..................................... 4-5
Functional Block Diagram .. 4-5
Outlines of Functions .......... 4-6
DC Controller PCB ........ 4-7
Control Panel PCB ......... 4-8
Power Supply PCB ......... 4-8
Sensor PCB ..................... 4-9
Main Motor/Scanner
Motor Driver ................... 4-9
Printer Controller PCB .... 4-9
with fax functions) ........ 4-10
(if equipped with fax
functions) ...................... 4-10
Power-On Sequence ................. 4-11
Controlling the Main Motor .... 4-12
Outline ............................... 4-12
2 Image Reading/Processing System ... 4-13
Outline ..................................... 4-13
3 Laser Exposure System .................... 4-14
Outline ..................................... 4-14
4 Image Formation System .................. 4-16
Outline ..................................... 4-16
5 Pickup/Feeding/Delivery System ..... 4-17
Outline ..................................... 4-17
Pickup Operation ...................... 4-18
Pickup from the Cassette .... 4-18
Outline .......................... 4-18
Retry Pickup ................. 4-19
Detecting the Size of
Paper ............................. 4-19
Feed Tray ........................... 4-20
Outline .......................... 4-20
Retry Pickup ................. 4-21
Paper ............................. 4-21
Feeding Operation/Delivery
Operation ................................. 4-22
Outline ............................... 4-22
Auto Delivery Control ....... 4-22
Reducing the Copying Speed .. 4-23
Outline ............................... 4-23
Detecting Jams ......................... 4-24
Outline ............................... 4-24
Types of Jams .................... 4-24
6 Fixing System ................................... 4-26
Outline ..................................... 4-26
Controlling the Fixing
Operation ................................. 4-27
Temperature ....................... 4-27
Controlling the Fixing
Film Bias ............................ 4-29
Fixing Heater Safety
Mechanism ......................... 4-29
Fixing Assembly ................ 4-29
with fax functions) ................... 3-12
(user mode) ........................ 3-12
2.13.2 Setting the Dial Type .......... 3-13
2.13.3 Executing Communications