Read Sharp AR-FN1 (serv.man5) Service Manual online
E. Elevator
1) Elevator motor (3)
When the elevator motor (3) is driven, the winding pulley (5) is rotated
in both forward and reverse to wind up the wire (6) stretching verti-
cally so that the tray 3 (off-set tray) is moved up and down. This
allows the discharge of paper at a fixed position according to the
number of sheets to be loaded on the off-set tray.
in both forward and reverse to wind up the wire (6) stretching verti-
cally so that the tray 3 (off-set tray) is moved up and down. This
allows the discharge of paper at a fixed position according to the
number of sheets to be loaded on the off-set tray.
2) Off-set tray full and load detection
When the power is turned ON, the off-set tray lowers to the lower limit
sensor (4) position. Then it elevates until the upper limit sensor (7)
turns ON, while counting the encoder pulses of the elevator motor (3).
sensor (4) position. Then it elevates until the upper limit sensor (7)
turns ON, while counting the encoder pulses of the elevator motor (3).
The volume of paper loaded on the off-set tray is calculated (0 -
100%) by counting the number of pulses from the elevator encoder
(1).
100%) by counting the number of pulses from the elevator encoder
(1).
The off-set tray is judged to be full when both the lower and upper
limit sensors (4, 7) are turned ON.
limit sensors (4, 7) are turned ON.
3) Upper limit sensor solenoid (T3UPSL)
When the paper is discharged from the off-set tray, the upper limit
sensor solenoid is turned on to pull in the actuator so that the sheet
discharged does not ride on the actuator of the upper limit sensor (7).
sensor solenoid is turned on to pull in the actuator so that the sheet
discharged does not ride on the actuator of the upper limit sensor (7).
No.
Signal name
Part name
(1)
—
Elevator motor encoder
(2)
—
Elevator drive unit
(3)
EVM
Elevator motor
(4)
T3DN
Tray 3 lower limit sensor
(5)
—
Winding pulley
(6)
—
Wire
(7)
T3UP
Tray 3 upper limit sensor
3. Basic operation
A. Basic operation flowchart
Fig. 1 Basic operation flowchart
1) Initialization
The finisher is initialized (home positioning of each motor) at the
following timing.
following timing.
•
When the power is turned on.
•
The finisher leaves the copier and when either of the top or bottom
door is opened.
door is opened.
•
When the copier start key is pressed (JOB_START):
•
Recovery action is performed.
(7)
(6)
(5)
(1)
(2)
(4)
(3)
Power ON
Initialization when
powered on
Independent movement
of staple unit
(Staple position)
Independent shifting
Transfer
Off-set trail paper
discharge
JOB_END
Operation when
JAM error occurs
Operation when
door is closed
Stapling
JOB_START
(Offset tray)
4 – 6
