30
z Scanner Section
chap.2
3. Function of Parts and Circuit
(1) Slider Limit Sensors
Description
Sensor 1 detects the optical system home position when ADF is not used.
Sensor 2 detects the optical system home position when ADF is used.
Circuit
Operation
R8S02009
R8S02E01e
Photointerrupting plate
Slider A
Slider limit sensor 1
(scanner home position)
Slider limit sensor 2
(S3-ADF home position)
Slider A
Photointerrupting plate
Photointerrupting
plate
Photointerrupting
plate
A shading plate is attached on slider A of the optical system. The position where sensor 1 is shaded becomes
the optical system home position when S3-ADF is not attached.
The position where sensor 2 is shaded becomes the optical system home position when S3-ADF is used.
R8S02E02e
• Standard (S3-ADF not attached) • With S3-ADF attached
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