Canon F-1, Service Manual

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Technology > Basic configuration > DADF > Overview of Operation Mode
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
PCB
Scanner unit
Sensor
Motor
Fan
Solenoid
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.
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■
Overview of Operation Mode
● Overview
The operation mode of this equipment is classified as below.
Name of
operation mode
2-sided scanning
method
Operation overview Applicable print mode
Normal rotation
pickup/delivery
- Original is picked up
and is scanned by the
scanner unit in reader
side. And then, it is
delivered.
1-sided original -> 1-sided print
1-sided original -> 2-sided print
1-sided original with mix of same
configuration -> 1-sided print
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
simultaneous
scanning
Original is picked up
and the front surface
is scanned by the
scanner unit in reader
side while back
surface is scanned
by the scanner unit in
DADF side.
And then, it is
delivered.
2-sided original -> 1-sided print
2-sided original -> 2-sided print
2-sided original with mix of same
configuration -> 1-sided print
2-sided original with mix of same
configuration -> 2-sided print
2-sided original with mix of different
configuration -> 1-sided print
2-sided original with mix of different
configuration -> 2-sided print
The outline of the original flow is shown.
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