Canon F1 Service Manual page 24

2
Technology > Basic configuration > DADF > Overview of Operation Mode
■ Electric Circuit Diagram
The control of this equipment is performed on the reader controller PCB.
Following shows the relation of each electrical parts.
DADF driver
Scanner unit
PCB
Reader controller PCB
Error code:
E270 (Error in the main scanning/sub scanning synchronization signal)
-0101 Sub scanning synchronization signal (VSYNC) is not properly transmitted from scanner
unit PCB (back side scanner unit), and this causes image failure or abnormal termination.
E280 (Communication error between reader controller PCB – scanner unit)
- 0101 If the communication is not started within the specified time between reader controller
PCB – back side scanner unit.
E400 (Communication error between reader controller PCB – DADF)
-0001 If check sum error occurs during communication between reader controller PCB - DADF.
-0002 If reception error occurs during communication between reader controller PCB - DADF.
E490 (Error caused by incorrect DADF type)
-0001 If a not-supported DADF type is installed.
2 Technology > Basic configuration > DADF > Overview of Operation Mode
■ Overview of Operation Mode
● Overview
The operation mode of this equipment is classified as below.
Name of
Sensor
operation mode
Normal rotation
Motor
pickup/delivery
Solenoid
Fan
F-2-16
The outline of the original flow is shown.
2-sided scanning
Operation overview
method
- Original is picked up 1-sided original -> 1-sided print
and is scanned by the
1-sided original -> 2-sided print
scanner unit in reader
1-sided original with mix of same
side. And then, it is
configuration -> 1-sided print
delivered.
1-sided original with mix of same
configuration -> 2-sided print
1-sided original with mix of different
configuration -> 1-sided print
1-sided original with mix of different
configuration -> 2-sided print
Extra long original -> 1-sided print
2-sided Original is picked up 2-sided original -> 1-sided print
simultaneous and the front surface
2-sided original -> 2-sided print
scanning is scanned by the
2-sided original with mix of same
scanner unit in reader
configuration -> 1-sided print
side while back
2-sided original with mix of same
surface is scanned
configuration -> 2-sided print
by the scanner unit in
2-sided original with mix of different
DADF side.
configuration -> 1-sided print
And then, it is
2-sided original with mix of different
delivered.
configuration -> 2-sided print
2-11
Applicable print mode
T-2-6
2-11