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Basic Sequence - Canon H1 Service Manual

Color image reader unit
Table of Contents

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2
Technology > Controls (Reader)
Controls (Reader)

■ Basic Sequence

● Basic Sequence at Power-On
ON
(Scanner
B
F
motor)
Light-ON
(LED)
(CCD
ON
HPsensor)
Footnote
• F: Scanner motor moves forward (toward right).
• B: Scanner motor moves backward (toward left).
• Light-ON: LED on CCD unit lights-on.
• ON: When CCD HP sensor (photo interrupter type) detects.
● Basic Sequence at Start Key ON (book mode/1 original)
Copy start
In reading
(Scanner
B
F
motor)
Light-ON
(LED)
(CCD HP
ON
sensor )
Shading correction
Footnote
• F: Scanner motor moves forward (toward right).
• B: Scanner motor moves backward (toward left).
• Light-ON: LED on CCD unit lights-on.
• ON: When CCD HP sensor (photo interrupter type) detects.
2
Technology > Controls (Reader)
STBY
CCD adjustment
End
B
F
ON
F-2-2
● Basic Sequence at Start Key ON (ADF mode/1 original)
Copy start
(Scanner
B
motor)
(LED)
(CCD HP
sensor )
Dust detection control
This is activated when any of the following conditions is true.
• Dust has been detected in all 3 locations at previous 1 job.
• Dust detection could not be activated due to JAM etc at previous job.
F-2-1
Footnote
• F: Scanner motor moves forward (toward right).
• B: Scanner motor moves backward (toward left).
• Light-ON: LED on CCD unit lights-on.
• ON: When CCD HP sensor (photo interrupter type) detects.
Dust detection
control
In stream reading
F F F
F
F F F B F
B
B
Light-ON
Light-ON
ON
Shading correction
2-2
End
F-2-3
2-2

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