Sharp AR-SS2 Service Manual ▷ View online
3. Operations of each section
A. Transport drive system
(1) Outline
The transport system transports paper discharged from the copier to
the bin by the transport roller. The transport roller is driven by the
transport motor (M2).
the bin by the transport roller. The transport roller is driven by the
transport motor (M2).
The paper transport status is detected by the paper exit sensor (PS1)
on the sorter controller PWB.
on the sorter controller PWB.
The transport motor is a stepping motor of 4-phase control. The
transport speed is controlled with the number of pulses of pulse sig-
nals A, A*, B, and B* of the motor driver IC (Q23).
transport speed is controlled with the number of pulses of pulse sig-
nals A, A*, B, and B* of the motor driver IC (Q23).
(2) Transport speed control
1) Outline
The transport speed is controlled by the transport motor (M2) and the
torque limiter. The transport motor changes the transport speed
depending on the paper size, and it keeps a fixed speed during
transporting without control of the transport speed.
The transport speed of this machine is higher than the process speed
of the copier. When copy paper is at the fusing section of the copier
and the transport roller of this machine at the same time, the transport
roller speed is reduced by the torque limiter.
The transport speed is controlled by the transport motor (M2) and the
torque limiter. The transport motor changes the transport speed
depending on the paper size, and it keeps a fixed speed during
transporting without control of the transport speed.
The transport speed of this machine is higher than the process speed
of the copier. When copy paper is at the fusing section of the copier
and the transport roller of this machine at the same time, the transport
roller speed is reduced by the torque limiter.
2) Process speed
The process speed is the speed from when the copy paper is
received from the copier to when it is taken into the sorter completely.
It is the same as the process speed of the copier.
The process speed is the speed from when the copy paper is
received from the copier to when it is taken into the sorter completely.
It is the same as the process speed of the copier.
3) Taking in, paper exit speed
This is the transport speed after discharging of the copy from the
fusing section of the copier. It varies depending on the paper size.
This is the transport speed after discharging of the copy from the
fusing section of the copier. It varies depending on the paper size.
Paper size
Transport speed
A4, 8.5"x11"
625mm/sec
A4-R, 8.5"x11"R
675mm/sec
B4, 8.5"x14"
700mm/sec
Fixed paper other than the above
575mm/sec
Unfixed paper
700mm/sec
(3) Stack over
1) Outline
The capacity of bins in each mode is limited as shown below. If the
capacity is exceeded, the stack over error occurs.
The capacity of bins in each mode is limited as shown below. If the
capacity is exceeded, the stack over error occurs.
Non-sort mode
Max. capacity
A3, B4, 11"x17", 8.5"x13", 8.5"x14", 12"x18"
1st bin: 60 sheets
A4, B5, A5, A4-R, B5-R, 8.5"x11",
8.5"x11"R, 5.5"x8.5", 7.25"x10.25"R
8.5"x11"R, 5.5"x8.5", 7.25"x10.25"R
100 sheets
Staple sort mode
Max. capacity
A3, B4, 11"x17", 8.5"x13", 8.5"x14"
25 sheets
A4, B5, A4-R, 8.5"x11", 8.5"x11"R
30 sheets
Sort mode
Max. capacity
A3, B4, 11"x17", 8.5"x13", 8.5"x14"
25 sheets
A4, B5, A5, A4-R, B5-R, 8.5"x11",
8.5"x11"R, 5.5"x8.5"
8.5"x11"R, 5.5"x8.5"
50 sheets
Group mode
Max. capacity
A3, B4, 11"x17", 8.5"x14", 8.5"x13"
25 sheets
A4, B5, A5, 8.5"x11", 5.5"x8.5", A4R, B5R,
8.5"x11"R
8.5"x11"R
30 sheets
(4) Paper jam
When the sorter detects a jam, it sends the jam signal (SJAM) to the
copier. Then the copier stops copying and displays "Paper feed
check" on the display section.
copier. Then the copier stops copying and displays "Paper feed
check" on the display section.
After completion of removing the jam, press the copy start key again,
and the jam-corrected number of copies are automatically made and
discharged to the bins.
and the jam-corrected number of copies are automatically made and
discharged to the bins.
When, on the other hand, a jam occurs in the copier, all the copy
papers under transportation in the sorter are discharged to the
specified bins and the operation is stopped.
papers under transportation in the sorter are discharged to the
specified bins and the operation is stopped.
Note: When a paper jam is detected in the sorter, separate the sorter
from the copier (the joint sensor is turned OFF), and remove
the jammed paper. Then reset the sorter to the copier, and the
trouble will be canceled.
the jammed paper. Then reset the sorter to the copier, and the
trouble will be canceled.
1) Transport delay jam
The paper exit sensor does not detect the paper in 300msec of
transport time (which varies depending on the copier) after reception
of the paper exit signal from the copier.
The paper exit sensor does not detect the paper in 300msec of
transport time (which varies depending on the copier) after reception
of the paper exit signal from the copier.
M2
PS1
Sorter controller PWB
Transport motor
Transport
motor drive
signal
Paper
detection
signal
motor drive
signal
Paper
detection
signal
Paper exit sensor
Transport roller
Torque limiter
AR-SS2
9 – 6
2) Transport remaining jam
The paper does not pass over the paper exit sensor within the
transport time of 2 sheets of copy paper after the paper exit sensor
(PS1) detects the paper.
The paper does not pass over the paper exit sensor within the
transport time of 2 sheets of copy paper after the paper exit sensor
(PS1) detects the paper.
3) Power ON jam (Jam paper remaining detection)
When the power switch of the copier is turned on, if the paper exit
sensor is ON, the SJAM signal is generated.
When the power switch of the copier is turned on, if the paper exit
sensor is ON, the SJAM signal is generated.
4) Door open jam
When the sorter is separated from the copier during operation, the
SJAM signal is generated.
When the sorter is separated from the copier during operation, the
SJAM signal is generated.
■
After removing the above jam error, press the copy start key, and
the remaining quantity of copies are automatically made by the
jam correction function. ON the other hand, when a jam occurs in
the copier, all the copy papers transporting in the sorter are dis-
charged to the specified bin and the sorter is stopped.
the remaining quantity of copies are automatically made by the
jam correction function. ON the other hand, when a jam occurs in
the copier, all the copy papers transporting in the sorter are dis-
charged to the specified bin and the sorter is stopped.
B. Bin unit drive system
(1) Outline
The bin unit drive system is composed of the following drive systems.
•
Bin drive system
•
Guide bar drive system
The bin is driven by the bin shift motor (M1), and moved up and
down.
The guide bar is driven by the guide bar motor (M3) to align the
discharged copy paper.
down.
The guide bar is driven by the guide bar motor (M3) to align the
discharged copy paper.
(2) Bin unit
1) Bin unit composition
The bin unit is composed as shown below.
The bin unit is composed as shown below.
The both sides of each bin are provided with the roller from the
outside of the bin frame. The dummy rollers on the upper and the
lower sides are integrated with the bin unit and fixed to the both ends
of the bin frame.
outside of the bin frame. The dummy rollers on the upper and the
lower sides are integrated with the bin unit and fixed to the both ends
of the bin frame.
The lower dummy roller is of eccentric shape to adjust the bin roller
height.
height.
2) Lead cam function
The lead cam is attached to be engaged with the bin unit roller. It is
driven by the bin shift motor (M1) which can rotate forward and
reverse.
The lead cam is attached to be engaged with the bin unit roller. It is
driven by the bin shift motor (M1) which can rotate forward and
reverse.
a
Normal
Abnormal
Copier paper exit signal
300msec transport time (Varies depending on the model)
Transport motor (M2)
Paper exit sensor (PI1)
Jam signal (SJAM)
a
Normal
Abnormal
a
a: Copy paper length x 2 (mm) + copier
’
s paper exit speed (mm/sec)
Transport motor (M2)
Paper exit sensor (PI1)
Jam signal (SJAM)
M1
Sor
ter controller PWB
PI1
M3
PI4
PI5
PI2
S1
PI3
S2
Shift motor clock signal
LED lighting signal
Lower limit detection signal
Lead cam position detection signal
Bin paper detection signal
Guide bar home position detection signal
Guide bar home position detection signal
Guide bar oscillation motor drive signal
Upper limit detection signal
Bin shift motor drive signal
Guide bar
Lead cam
Bin shift motor
Drive belt
Lead cam drive
toward you
toward you
AR-SS2
9 – 7
When the lead cam rotates and the roller moves up and down along
the lead cam, the bin connected with the bin frame and the roller is
moved up and down.
the lead cam, the bin connected with the bin frame and the roller is
moved up and down.
If, however, all the grooves in the lead cam were slanted, the lead
cam would be rotated by the weight of the bin unit when the bin unit is
stationary. To prevent against this, the groove has the horizontal
section as shown below. The lead cam home position sensor detects
the position so that the roller comes at the horizontal section when
the bin unit is stationary.
cam would be rotated by the weight of the bin unit when the bin unit is
stationary. To prevent against this, the groove has the horizontal
section as shown below. The lead cam home position sensor detects
the position so that the roller comes at the horizontal section when
the bin unit is stationary.
3) Bin shift motor control
The bin shift motor control circuit is shown below.
The bin shift motor (M1) is a DC motor, and controlled by the drive
circuit to move the bin unit up and down.
The up/down moving speed of the bin unit is detected and controlled
by the shift motor clock sensor.
The stop position of the bin unit is detected by the lead cam home
position sensor.
The bin shift motor control circuit is shown below.
The bin shift motor (M1) is a DC motor, and controlled by the drive
circuit to move the bin unit up and down.
The up/down moving speed of the bin unit is detected and controlled
by the shift motor clock sensor.
The stop position of the bin unit is detected by the lead cam home
position sensor.
When the stapler unit is not in the home position, the +24V power is
interrupted by the stapler home position switch to stop the bin shift
motor in order to prevent against a crash of the bin unit and the
stapler unit.
An overrun is prevented by the bin unit upper limit sensor and the
lower limit sensor.
The current detection circuit is provided to detect an overcurrent when
the bin unit is interrupted by a foreign material. It stops the bin unit at
that time.
interrupted by the stapler home position switch to stop the bin shift
motor in order to prevent against a crash of the bin unit and the
stapler unit.
An overrun is prevented by the bin unit upper limit sensor and the
lower limit sensor.
The current detection circuit is provided to detect an overcurrent when
the bin unit is interrupted by a foreign material. It stops the bin unit at
that time.
Roller
Roller
Lead cam
Bin
Horizontal section
Lead cam home
position sensor (PI2)
position sensor (PI2)
AR-SS2
9 – 8
4) Bin shift motor rotation control
The bin shift motor that drives the lead cam is controlled depending
on the copy speed data sent from the copier.
The microcomputer on the sorter controller PWB controls the bin shift
motor as follows:
The bin shift motor that drives the lead cam is controlled depending
on the copy speed data sent from the copier.
The microcomputer on the sorter controller PWB controls the bin shift
motor as follows:
•
Paper exit: The bin roller is moved to the parallel section of the
lead cam and stopped there.
lead cam and stopped there.
•
Transport: The bin is shifted by one.
The microcomputer on the sorter controller PWB controls the rpm of
the bin shift motor so that the bin is shifted by one during the
transport interval of copy paper.
the bin shift motor so that the bin is shifted by one during the
transport interval of copy paper.
(3) Guide bar control
1) Outline
The guide bar is in the bin unit. It oscillates as shown below.
The guide bar has the following functions:
The guide bar is driven by the guide bar oscillation motor (M3).
The guide bar home position sensor (PI3) detects that the guide bar
is in the home position.
The guide bar is in the bin unit. It oscillates as shown below.
The guide bar has the following functions:
The guide bar is driven by the guide bar oscillation motor (M3).
The guide bar home position sensor (PI3) detects that the guide bar
is in the home position.
M1
Drive circuit
Q1
CPU
MS4
NO
PI4
PI5
PI2
PI1
MS8
+24V
BMUP
BMDWN
PWM
Current
detection
circuit
detection
circuit
Sorter controller PWB
Stapler home
position switch
position switch
Bin unit upper
limit sensor
limit sensor
Bin unit lower
limit sensor
limit sensor
Bin shift motor
Shift motor
clock sensor
clock sensor
Lead cam home
position sensor
position sensor
Obstacle
detection
switch MS8
detection
switch MS8
LCHP
Bin shift motor (M1)
Bin
Lead cam home
position sensor (PI2)
position sensor (PI2)
Roller position
on the lead cam
on the lead cam
Horizontal
section
Stop
Horizontal
section
Stop
Horizontal
section
Stop
Slant
section
Up/Down
Slant
section
Up/Down
Guide bar home position signal
Guide bar oscillation
motor drive signal
motor drive signal
Guide bar
oscillation motor
(M3)
oscillation motor
(M3)
Guide bar home
position sensor
(PI3)
position sensor
(PI3)
Guide bar
Sorter controller PWB
AR-SS2
9 – 9
Click on the first or last page to see other AR-SS2 service manuals if exist.