Sharp AR-SS2 Service Manual ▷ View online
2) Alignment operation
The alignment operation of the guide bar is performed every time
when copy paper is discharged. When stapling is made, it holds copy
paper.
The alignment operation of the guide bar is performed every time
when copy paper is discharged. When stapling is made, it holds copy
paper.
3) Guide bar oscillation motor (M3) control
The control circuit of the guide bar oscillation motor (M3) is shown
below.
The guide bar oscillation motor is a stepping motor of 4-phase con-
trol.
The sorter controller PWB sends drive pulses (GBMA, GBMA
The control circuit of the guide bar oscillation motor (M3) is shown
below.
The guide bar oscillation motor is a stepping motor of 4-phase con-
trol.
The sorter controller PWB sends drive pulses (GBMA, GBMA
∗
,
GBMB, GBMB
∗
) to the motor driver.
The motor driver controls the output timing of the pulse signals (A,
A
A
∗
, B, B
∗
) according to each signal to turn ON/OFF the guide bar
oscillation motor and switch the rotating direction.
When the guide bar oscillation motor (M3) is held, the output timing of
the pulse signals (A, A
When the guide bar oscillation motor (M3) is held, the output timing of
the pulse signals (A, A
∗
, B, B
∗
) is fixed.
The fuse (ICP2) breaks the power supply circuit when an overcurrent
flows through the circuit to stop the guide bar oscillation motor (M3).
flows through the circuit to stop the guide bar oscillation motor (M3).
(4) Bin paper sensor
1) Outline
The bin paper sensor is composed of the LED and the photo transis-
tor. It detects paper in the bin.
The bin paper sensor is composed of the LED and the photo transis-
tor. It detects paper in the bin.
This machine executes the paper detection level correction automat-
ically and periodically to prevent against malfunctions due to light
quantity change in each sensor.
ically and periodically to prevent against malfunctions due to light
quantity change in each sensor.
Note: When the sensor light receiving section (S2) is exposed to
external lights during correction of the paper detection level,
an erroneous correction value is stored. In such a case,
"E525" is displayed on the operation panel of the copier during
the normal operation.
an erroneous correction value is stored. In such a case,
"E525" is displayed on the operation panel of the copier during
the normal operation.
(5) Other sensors
1) Bin unit lower limit sensor (Home position sensor)
The bin unit returns to the home position when the copy start key is
pressed ON or when all the paper in the bins are removed.
In that case, the actuator section integrated with the bin unit passes
over the bin unit lower limit sensor (PI4) to turn on the sensor, send-
ing signals to the CPU of the sorter controller PWB.
When the bin unit is falling further from the home position, the lead
cam home position sensor turns OFF to detect the lower limit. The
sorter controller PWB immediately stops the bin shift motor (M1) drive
and displays the error code on the operation panel of the copier at the
same time.
The bin unit returns to the home position when the copy start key is
pressed ON or when all the paper in the bins are removed.
In that case, the actuator section integrated with the bin unit passes
over the bin unit lower limit sensor (PI4) to turn on the sensor, send-
ing signals to the CPU of the sorter controller PWB.
When the bin unit is falling further from the home position, the lead
cam home position sensor turns OFF to detect the lower limit. The
sorter controller PWB immediately stops the bin shift motor (M1) drive
and displays the error code on the operation panel of the copier at the
same time.
2) Bin unit upper limit sensor
The bin unit upper limit detection is performed by the actuator section
integrated with the bin unit and the bin unit upper limit sensor (PI5).
When any abnormality occurs and the bin unit moves up further from
the 20th bin, the actuator section passes over the upper limit sensor
to turn on the sensor, sending signals to the CPU of the sorter con-
troller PWB. It immediately stops the bin shift motor (M1) drive and
displays the error code on the operation panel of the copier at the
same time.
The bin unit upper limit detection is performed by the actuator section
integrated with the bin unit and the bin unit upper limit sensor (PI5).
When any abnormality occurs and the bin unit moves up further from
the 20th bin, the actuator section passes over the upper limit sensor
to turn on the sensor, sending signals to the CPU of the sorter con-
troller PWB. It immediately stops the bin shift motor (M1) drive and
displays the error code on the operation panel of the copier at the
same time.
■
Reset
Turn off the copier power and turn on again.
Turn off the copier power and turn on again.
Guide bar
Paper size
M3
Q34
Motor
driver
Q1
CPU
ICP2
+24V
GBMA
GBMA*
GBMB
GBMB*
GBMA*
GBMB
GBMB*
GBHP
A
B
B
A
Guide bar
drive motor
drive motor
Guide bar home
position sensor
position sensor
Sorter controller PWB
PI3
∗
∗
Bin unit
Photo transistor (S2)
LED(S1)
Bin paper sensor
Sorter controller PWB
Q16
+5V
Light
emitting
section
emitting
section
Light
receiving
section
receiving
section
Actuator section
Upper limit
sensor (PI5)
sensor (PI5)
Lower limit
sensor (PI4)
sensor (PI4)
AR-SS2
9 – 10
C. Stapler unit drive system
(1) Outline
The stapler unit staples paper discharged into the bins.
The stapling is driven by the stapler motor (M5).
The stapler unit oscillation is performed by the stapler unit oscillation
motor (M4).
The stapler unit home position is detected by the stapler unit oscilla-
tion home position switch (MS4) and the stepping motor is driven by
the specified number of pulses to move the stapler unit to the oscilla-
tion position.
During oscillation, the stapler presses the paper holding lever to hold
paper during stapling.
The stapling is driven by the stapler motor (M5).
The stapler unit oscillation is performed by the stapler unit oscillation
motor (M4).
The stapler unit home position is detected by the stapler unit oscilla-
tion home position switch (MS4) and the stepping motor is driven by
the specified number of pulses to move the stapler unit to the oscilla-
tion position.
During oscillation, the stapler presses the paper holding lever to hold
paper during stapling.
Sorter controller circuit PWB
M4
M5
MS5
PI9
PI8
MS6
MS3
MS4
Stapler motor
Stapler motor
drive signal
drive signal
Staple empty detection signal
Staple cue detection signal
Cartridge empty detection signal
Stapler operation home
position detection signal
position detection signal
Stapler safety detection signal
Stapler unit oscillation home
position detection signal
position detection signal
Stapler unit oscillation motor
drive signal
drive signal
AR-SS2
9 – 11
(2) Stapler unit
1) Outline
The staple unit composition is shown in the figure below.
The staple unit composition is shown in the figure below.
Stapling is driven by the stapler motor (M5). Stapling is made by the
rotation of the cam. The staple home position sensor (PI8) detects
one cycle of stapling.
rotation of the cam. The staple home position sensor (PI8) detects
one cycle of stapling.
The cartridge empty detection switch (MS6) detects the staple
cartridge empty. The staple empty detection switch (MS5) detects
staple empty in the cartridge.
cartridge empty. The staple empty detection switch (MS5) detects
staple empty in the cartridge.
2) Stapler motor (M5) control
a. Outline
a. Outline
The block diagram below shows the stapler motor control circuit.
The stapler motor is a DC motor. This circuit has the following
functions.
The stapler motor is a DC motor. This circuit has the following
functions.
•
ON/OFF control of the stapler motor
•
Rotating direction control of the stapler motor
•
Overcurrent protection of the stapler motor
The stapler safety switch is provided in the power supply path to
the stapler motor (M5).
When a material of about 5.5mm or greater enters the staple
section, the stapler safety switch (MS3) cuts off the power source
for driving the stapler motor (M5).
the stapler motor (M5).
When a material of about 5.5mm or greater enters the staple
section, the stapler safety switch (MS3) cuts off the power source
for driving the stapler motor (M5).
MS5
PI9
PI8
MS6
Staple cue
sensor
sensor
Stapling home
position sensor
position sensor
Stapler motor
Cartridge empty
detection switch
detection switch
Staple empty
detection switch
detection switch
M5
Current
detection
circuit
Stapler safety switch
12
11
11
R156
Q47
R15
Q4
Q48
Q50
R158
R164
R16
R16
Q51
Q56
Q43
Q43
Q56
R159
R160
R160
R161
+5V
+24
+5V
R162
+5V
Q54
+5V
Q55
R173
D33
D32
Q52
Sorter controller PWB
MS3
SPMCW
SPMCCW
NO
Stapler motor
AR-SS2
9 – 12
b. Stapler motor ON/OFF control
ON/OFF and the rotation direction of the stapler motor are control-
led by the combination of the following two signals.
led by the combination of the following two signals.
1. Stapler motor forward rotation signal (SPMCW
∗
)
2. Stapler motor reverse rotation signal (SPMCCW
∗
)
Stapler motor rotating direction
SPMCW
∗
SPMCCW
∗
Forward
1
0
Reverse
0
1
Stop
1
0
c. Stapler motor overcurrent protection
When the stapler motor starts rotation, the current detection circuit
detects the current flowing through the stapler motor.
When an overcurrent is detected, the current detection circuit
turns on Q54 and Q55 to control the stapler motor drive.
detects the current flowing through the stapler motor.
When an overcurrent is detected, the current detection circuit
turns on Q54 and Q55 to control the stapler motor drive.
3) Stapler motor staple jam control
When a staple jam occurs in the stapler unit, the stapler motor (M5) is
controlled as follows.
When a staple jam occurs in the stapler unit, the stapler motor (M5) is
controlled as follows.
1) An overload is applied to the stapler motor by a staple jam.
↓
2) The stapler does not return to the home position within about
0.6sec after starting stapling.
↓
3) The stapler motor is rotated in reverse to return to the home
position of stapling.
↓
4) An alarm is made to the copier.
4) Safety switch (MS3)
When your finger enters the stapling position, the actuator is lowered
to turn off the safety switch. When the safety switch is turned off, the
stapler motor (M5) power is cut off and the signal is sent to the CPU
to turn off the drive signal of the stapler motor (M5) to stop stapling.
When your finger enters the stapling position, the actuator is lowered
to turn off the safety switch. When the safety switch is turned off, the
stapler motor (M5) power is cut off and the signal is sent to the CPU
to turn off the drive signal of the stapler motor (M5) to stop stapling.
5) Staple empty detection
The staple empty detection in the staple cartridge is made by the
staple empty detection switch (MS5) provided in the stapler.
The staple empty detection in the staple cartridge is made by the
staple empty detection switch (MS5) provided in the stapler.
The staples in the staple cartridge are pushed up by the spring and
the plate. the staples are also pushed toward the tip of the stapler.
the plate. the staples are also pushed toward the tip of the stapler.
When there are staples in the cartridge, the staple empty detection
switch (MS5) is pushed by the staples and the sorter controller
detects presence of the staples.
switch (MS5) is pushed by the staples and the sorter controller
detects presence of the staples.
When the staples are exhausted (when the remaining quantity of the
staples becomes about 40 pcs.), the staple detection switch (MS5) is
opened (MS5: normal open), and the sorter controller detects staple
empty. At the same time, the sorter controller displays the staple
supply display.
staples becomes about 40 pcs.), the staple detection switch (MS5) is
opened (MS5: normal open), and the sorter controller detects staple
empty. At the same time, the sorter controller displays the staple
supply display.
When staple empty is detected, stapling is stopped. When, however,
staple empty is detected during continuous stapling, stapling is
stopped after completion of the job.
staple empty is detected during continuous stapling, stapling is
stopped after completion of the job.
(3) Stapler unit oscillation control
1) Outline
When the bin is shifted, the stapler unit oscillates as shown below so
that the stapler unit does not make contact with the paper in the bin.
When the bin is shifted, the stapler unit oscillates as shown below so
that the stapler unit does not make contact with the paper in the bin.
Oscillation is performed by the stapler unit oscillation motor (M4).
When the stapler unit reaches the stapling position, the drive power is
supplied to the stapler motor.
When the stapler unit reaches the stapling position, the drive power is
supplied to the stapler motor.
To detect the home position, the stapler home position switch (MS4)
is provided.
is provided.
Safety switch (MS3)
Actuator
MS5
MS6
MS5
MS6
Cartridge empty
detection switch
detection switch
Staple empty
detection switch
detection switch
Staple
Plate
Spring
Staple cartridge
Staple feed roller
AR-SS2
9 – 13
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