Table of Contents
Advertisement
CHAPTER 8 ADF
B
Basic Construction
1.
Outline of the Electric Circuitry
The ADF's major electrical mechanisms are controlled by the CPU on the ADF controller
PCB.
The CPU on the ADF controller PCB reads the signals from the sensors and the copier and
generates signals to drive the motor at such times as programmed in advance.
The copying modes selected on the copier are communicated to the ADF in serial, and the ADF
communicates to the copier the state of feeding originals to the copier in serial. (It does not use an
IC for communications.)
[Input block]
Sensor
Switch
8-2
ADFcontroller PCB
ROM
(Q2)
Serial communication
Copier
Figure 8-102
COPYRIGHT © 1999 CANON INC.
[Control block]
CPU
(Q1)
24V 5V
Composite
power
supply
PCB
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
[Output block]
Motor
- Quick Links:
- Chapter 11 Troubleshooting
Hide quick links:
Advertisement
Chapters
Table of Contents
Troubleshooting
