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ADF - Technology > Adjustment > Scanner Unit > Original Pickup Tray Lifter Control
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Original Detection Control
The original sensor (SR1) identifies whether the original is present or not on the original
pickup tray.
Once an original is placed on the original pickup tray, the detecting lever operates together
with the light blocking plate and the light blocking plate passes through the photo interrupter.
As a result, the original sensor (SR1) generates the original detection signal (EMP_S).
Once the tray open/closed sensor (SR9) and the cover open/closed sensor (SR10) detects
that the original pickup tray and the feeder cover are closed respectively, they generate the
original pickup tray open detection signal (TRAY_OPEN_S) and the feeder cover open signal
(COVER_S).
Once the DADF driver PCB receives the original pickup tray open signal (TRAY_OPEN_S),
feeder cover open signal (COVER_S) and original detection signal (EMP_S), the original set
display activation signal (EMP_LED) is generated to activate the original set display (LED).
DADF driver PCB
SR10
LED
SR9
5
ADF - Technology > Adjustment > Scanner Unit > Original Pickup Tray Lifter Control
Original
SR1
Detecting lever
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Original Pickup Tray Lifter Control
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Overview
This equipment moves the original pickup tray up and down when the original is picked up.
To enable stacking of 300 sheets of original (80 g/m
controls the pickup position to be kept constant by moving the original pickup tray up and
down.
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Pickup Roller Unit
Pickup roller unit detects up/down movement of the pickup roller unit as well as the top
position of the original.
DADF driver PCB
Pickup motor (M1)
Pickup roller unit
Pickup roller unit
lifter motor (M10)
lifter home position
sensor (SR12)
5-25
) and stream scanning, this equipment
2
Paper surface sensor (SR6)
Cam
Pickup roller unit
5-25
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