Chapter 2
2-22
T-2-4
2.3.2 Checking the Presence/Absence of an Original
0002-7429
The machine uses the original placement sensor (PI5) to check the presence/absence of an
original in the original tray.
When an original is placed on the tray, the detecting lever operates in conjunction with the
light-blocking plate, during which the light-blocking plate blocks the light of the photo
interrupter. As a result, the original placement sensor (PI5) generates the original detection
signal (EMP_S), which will cause the ADF driver PCB to turn on the original placement
indicator.
F-2-17
Item Description Sensor used
(notation)
checks the
presence/absence
of an original in
the original pickup
tray.
checks the presence/absence of an original in the original pickup
tray.
original placement
sensor (PI5)
Original presence/absence
Cross-feed
direction
checks the width of the original placed in the original pickup tray. original width
volume (VR1)
Feed direction checks the length of the original with reference to the time (distance)
from when the read sensor goes on to when it goes off.
read sensor (PI8)
ADF driver PCB
Detecting lever
Original
EMP_S
EMP_LED
LED
PI5
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