Canon F-1, Service Manual

Page: 59 / 179

2
2
2-46
2-46
Technology > Controls > DADF > Original Pickup Tray Assembly
Technology > Controls > DADF > Original Pickup Tray Assembly
● Original Pickup Tray Lifter Control
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
2
) and stream scanning, this equipment
controls the pickup position to be kept constant by moving the original pickup tray up and
down.
Pickup Roller Unit
Pickup roller unit detects up/down movement of the pickup roller unit as well as the top
position of the original.
Cam
Paper surface sensor (SR6)
Pickup roller unit
lifter home position
sensor (SR12)
Pickup roller unit
lifter motor (M10)
Pickup motor (M1)
Pickup roller unit
P
IC
K
U
P
_H
P
_S
P
IC
K
U
P
_M
O
TO
R
PA
P
E
R
_F
A
C
E
_S
DADF driver PCB
F-2-84
Original Pickup Tray Drive Unit
This detects the drive of the tray up/down arm as well as the lowest position of the original
pickup tray (upper).
Tray lifter
motor (M8)
Tray home
position sensor (SR13)
Tray lifter arm
TR
AY
_H
P
_S
LI
FT
_M
O
T
DADF driver PCB
F-2-85