Sharp MX-FNX2 (serv.man7) Service Manual ▷ View online
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 6
C. Job Offset
(1) Outline
"Job offset" refers to the operation by which the machine delivers a
set of sheets with them pulled forward or backward for sorting.
Switching between the forward and backward directions is made
using an aligning plate (front) and an aligning plate (rear).
The sheet coming between the delivery rollers is fed onto the pro-
cessing tray and then fed toward the stopper by the paddle.
A swing guide is at the up position while a sheet is being pulled
onto the processing tray or during alignment. It is at the down posi-
tion during stack feeding, stack delivery, or stapling.
At power-on, the finisher controller PCB drives the aligning motor
(front) (FFJM) and the aligning motor (rear) (FRJM) to return the
two aligning plates to their home positions.
set of sheets with them pulled forward or backward for sorting.
Switching between the forward and backward directions is made
using an aligning plate (front) and an aligning plate (rear).
The sheet coming between the delivery rollers is fed onto the pro-
cessing tray and then fed toward the stopper by the paddle.
A swing guide is at the up position while a sheet is being pulled
onto the processing tray or during alignment. It is at the down posi-
tion during stack feeding, stack delivery, or stapling.
At power-on, the finisher controller PCB drives the aligning motor
(front) (FFJM) and the aligning motor (rear) (FRJM) to return the
two aligning plates to their home positions.
(2) Processing Tray Paper Stacking Operation
A sheet coming between the delivery rollers is fed onto the pro-
cessing tray. Then, the paddle taps on the sheet surface to locate
the sheet against the processing tray stopper.
cessing tray. Then, the paddle taps on the sheet surface to locate
the sheet against the processing tray stopper.
(3) Offset Operation
Each sheet is pulled forward or backward using the aligning plate
(front) and the aligning plate (rear).
The offset operation is performed each time a sheet is pulled onto
the processing tray.
Offsetting in the forward direction
(front) and the aligning plate (rear).
The offset operation is performed each time a sheet is pulled onto
the processing tray.
Offsetting in the forward direction
Offsetting in the backward direction
(4) Stack Delivery Operation
Stack delivery takes place when 1 sheet of large-size paper or 25
sheets of small-size paper have been stacked on the processing
tray with them offset in either direction.
The paddle motor (FPM) rotates and the swing guide descends to
hold the paper stack between the upper and lower stack delivery
rollers. The stack delivery motor (FAM) rotates in the forward direc-
tion to rotate the delivery rollers, feeding the paper stack in the
delivery direction. The delivery belt home position sensor is turned
OFF. The delivery motor is driven a specified number of pulses,
causing the swing guide to ascend. Next, the paper delivery motor
is driven. Next, the delivery motor is driven to deliver the paper
stack with the nails of the delivery belt that rotates in sync with the
stack delivery rollers.
sheets of small-size paper have been stacked on the processing
tray with them offset in either direction.
The paddle motor (FPM) rotates and the swing guide descends to
hold the paper stack between the upper and lower stack delivery
rollers. The stack delivery motor (FAM) rotates in the forward direc-
tion to rotate the delivery rollers, feeding the paper stack in the
delivery direction. The delivery belt home position sensor is turned
OFF. The delivery motor is driven a specified number of pulses,
causing the swing guide to ascend. Next, the paper delivery motor
is driven. Next, the delivery motor is driven to deliver the paper
stack with the nails of the delivery belt that rotates in sync with the
stack delivery rollers.
Sensor
Symbol
Connector
Aligning home position sensor (front)
FFJHPD
CN4-3
Aligning home position sensor (rear)
FRJHPD
CN5-15
Stack roller home position sensor
FARHPD
CN9-9
Paddle home position sensor
FPDHPD
CN9-3
Function
Motor
Symbol
Drives the aligning plate (front)
Aligning motor (front)
FFJM
Drives the aligning plate (rear)
Aligning motor (rear)
FRJM
Drives the swing guide drive
Paddle motor
FPM
Drives the paddle (feeds paper)
Paddle motor
FPM
Aligning plate
(front)
(front)
Alignment motor (front)
(FFJM)
Aligning home position sensor (front)
(FFJHPD)
Alignment
motor (rear)
motor (rear)
(FRJM)
Light-shielding plate
(Front)
Paper
Light-shielding plate
Aligning home position sensor (rear)
(FRJHPD)
Aligning plate
(rear)
(rear)
Swing guide
Delivery belt
Stack delivery roller (lower)
Processing tray stopper
Paddle
Stack delivery roller (upper)
Aligning plate
Paper
Aligning plate (rear)
Sheet to be offset
Tray
Aligning plate (front)
Tray
Aligning plate (rear)
Sheet to be offset
Aligning plate (front)
Swing guide
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 7
Job offset sequence
3. Stapling Operation
A. Outline
Staple operation is performed to staple a specified sheets of paper
using a stapler unit.
The stapling position depends on the staple mode and paper size.
When the machine starts immediately after power-on, the finisher
controller PCB drives the staple shift motor (FSM) to return the sta-
pler unit to the home position. The stapler unit starts moving toward
the front of the stapler frame. It stops when the staple shift home
position sensor (FSTHPD) on the slide PCB located under the sta-
pler unit. Next, the staple shift motor (FSM) is driven a specified
number of pulses. The stapler unit moves to rear standby position
at the back of the machine, entering the standby state.
using a stapler unit.
The stapling position depends on the staple mode and paper size.
When the machine starts immediately after power-on, the finisher
controller PCB drives the staple shift motor (FSM) to return the sta-
pler unit to the home position. The stapler unit starts moving toward
the front of the stapler frame. It stops when the staple shift home
position sensor (FSTHPD) on the slide PCB located under the sta-
pler unit. Next, the staple shift motor (FSM) is driven a specified
number of pulses. The stapler unit moves to rear standby position
at the back of the machine, entering the standby state.
B. Stapling Operation
When stacking and alignment of paper on the processing tray are
complete, the finisher controller PCB drives the paddle motor
(FPM) in the reverse direction and lowers the swing guide. When
the swing guide descends, the paper stack is sandwiched between
the upper and lower stack delivery rollers.
The finisher control PCB shifts the stapler according to the speci-
fied staple position to perform stapling. (Only for B5-R, 1-position
bottom stapling is made at the rear side of 2-posiiton stapling.)
When the stapler shifts toward you, the process tray stopper is put
down to the lower side.
complete, the finisher controller PCB drives the paddle motor
(FPM) in the reverse direction and lowers the swing guide. When
the swing guide descends, the paper stack is sandwiched between
the upper and lower stack delivery rollers.
The finisher control PCB shifts the stapler according to the speci-
fied staple position to perform stapling. (Only for B5-R, 1-position
bottom stapling is made at the rear side of 2-posiiton stapling.)
When the stapler shifts toward you, the process tray stopper is put
down to the lower side.
Sensor
Symbol
Connector
Function
Remarks
Staple shift
home position
sensor
home position
sensor
FSTHPD
CN11-3
Detects the home
position for the
stapler moving
back and forth.
position for the
stapler moving
back and forth.
—
Staple drive
home position
sensor
home position
sensor
FSHPD
CN11-4
Detects the home
position for the
stapling operation
position for the
stapling operation
In the
stapler
stapler
Self prime
sensor
sensor
FSPD
CN11-5
Detects presence
or absence of
staples in the
cartridge.
or absence of
staples in the
cartridge.
In the
stapler
stapler
Staple empty
sensor
sensor
FSD
CN11-6
Cartridge empty
detection
detection
In the
stapler
stapler
Function
Motor
Symbol
Remarks
Moves the stapler.
Staple shift motor
FSM
—
Performs stapling operation
Staple motor
FFSM
—
Host machine delivery signal
Start signal
Entry paper sensor
(FFD)
(FFD)
Alignment tray sensor
(FAD)
(FAD)
Feed motor (FEM)
Bundle exit motor (FAM)
Delivery belt home
position sensor (FOBHPD)
position sensor (FOBHPD)
Paddle motor (FPM)
Paddle home position
sensor (FPDHPD)
sensor (FPDHPD)
Bundle roller home position
sensor (FARHPD)
sensor (FARHPD)
Staple safety switch
(FSSSW)
(FSSSW)
Alignment motor (front)
(FFJM)
(FFJM)
Alignment home position
sensor (front) (FFJHPD)
sensor (front) (FFJHPD)
Alignment motor (rear)
(FRJM)
(FRJM)
Alignment home position
sensor (rear) (FRJHPD)
sensor (rear) (FRJHPD)
60msec
4 ms (A4)
30msec
220msec
∗
Variable by the size
4 ms (A4)
∗
∗
4 ms (A4)
∗
4 ms (A4)
∗
: CW rotation
: CCW rotation
Paper stack
Staple
shift motor
(FSM)
shift motor
(FSM)
Stapler
Staple shift home position sensor (FSTHPD)
Light-shielding plate
(Deliver direction)
Stapler
Swing guide
Stack delivery roller (upper)
Stack
delivery
roller
(lower)
Processing tray
stopper
stopper
Paper stack
Delivery tray
Paddle motor (
FPM)
Bundle roller home
position sensor
(FARHPD)
position sensor
(FARHPD)
Light-shielding plate
Staple safety
switch
switch
(FSSSW)
Swing guide
Stack delivery
roller (upper)
Stack delivery
roller (lower)
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 8
C. Delivery Operation after Stapling
When stapling is complete, the finisher controller PCB drives the
stack delivery motor (FAM) in the forward direction to feed the
paper stack (sandwiched between the stack delivery rollers) in the
delivery direction. The delivery belt home position sensor (FOB-
HPD) is turned OFF. The stack delivery motor (FAM) is driven a
specified number of pulses, causing the swing guide to ascend. At
the same time, the staple shift motor (FSM) is driven to return the
stapler back to the standby position, followed by driving of the stack
delivery motor (FAM). Then, the paper stack is delivered with the
nails of the delivery belt that rotates in sync with the stack delivery
rollers.
stack delivery motor (FAM) in the forward direction to feed the
paper stack (sandwiched between the stack delivery rollers) in the
delivery direction. The delivery belt home position sensor (FOB-
HPD) is turned OFF. The stack delivery motor (FAM) is driven a
specified number of pulses, causing the swing guide to ascend. At
the same time, the staple shift motor (FSM) is driven to return the
stapler back to the standby position, followed by driving of the stack
delivery motor (FAM). Then, the paper stack is delivered with the
nails of the delivery belt that rotates in sync with the stack delivery
rollers.
D. Stapler Unit
The staple motor (FFSM) is used to perform stapling operation.
This motor rotates the cam one turn for stapling. The home position
of this cam is detected by the staple drive home position sensor
(FSHPD).
The staple motor (FFSM) is rotated in the forward or reverse direc-
tion under the control of the macro computer (IC13) on the finisher
controller PCB.
When the staple drive home position sensor (FSHPD) is OFF, the
finisher controller PCB rotates the staple motor (FFSM) in the for-
ward direction until the sensor turns ON, allowing the staple cam to
the original position.
The staple empty sensor (FSD) is used to detect presence/
absence of a staple cartridge in the machine. The self prime sensor
(FSPD) is used to detect presence/absence of staples in the car-
tridge.
The finisher controller circuit does not drive the staple motor
(FFSM) unless the staple safety switch (FSSSW) is ON (the swing
guide is close). This assures safety in case where you happen to
put your finger in the stapler.
This motor rotates the cam one turn for stapling. The home position
of this cam is detected by the staple drive home position sensor
(FSHPD).
The staple motor (FFSM) is rotated in the forward or reverse direc-
tion under the control of the macro computer (IC13) on the finisher
controller PCB.
When the staple drive home position sensor (FSHPD) is OFF, the
finisher controller PCB rotates the staple motor (FFSM) in the for-
ward direction until the sensor turns ON, allowing the staple cam to
the original position.
The staple empty sensor (FSD) is used to detect presence/
absence of a staple cartridge in the machine. The self prime sensor
(FSPD) is used to detect presence/absence of staples in the car-
tridge.
The finisher controller circuit does not drive the staple motor
(FFSM) unless the staple safety switch (FSSSW) is ON (the swing
guide is close). This assures safety in case where you happen to
put your finger in the stapler.
Stapler
Swing guide
Stack delivery
roller (lower)
roller (lower)
Paper stack
Delivery tray
Delivery belt
Paddle motor (FPM)
Swing guide
Stack delivery
roller (lower)
roller (lower)
Stack delivery roller
(upper)
(upper)
Stack roller home position
sensor (FARHPD)
sensor (FARHPD)
Light-shielding plate
Staple safety
switch
switch
(FSSSW)
Finisher controller PCB
Staple
motor
dr
iv
e
signal
Car
tr
idge
detect
signal
Staple
empty
detect
signal
Staple
dr
iv
e
home
position
detect
signal
FFSM
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 9
(1) Stapler Movement Controller
The stapler unit is moved by the staple shift motor (FSM). Its home
position is detected by the staple shift home position sensor
(FSTHPD). The stapler waits at the back irrespective of the staple
mode and paper size. After paper has been stacked on the pro-
cessing tray, the stapler is moved to the specified stapling position
in response to the stapling command from the host machine.
The figure below shows the standby position of the stapler and the
stapling position depending on the staple mode.
1)
position is detected by the staple shift home position sensor
(FSTHPD). The stapler waits at the back irrespective of the staple
mode and paper size. After paper has been stacked on the pro-
cessing tray, the stapler is moved to the specified stapling position
in response to the stapling command from the host machine.
The figure below shows the standby position of the stapler and the
stapling position depending on the staple mode.
1)
Front 1-point stapling
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
2)
Rear 1-point stapling
The stapler waits at the back. The stapling position is the same
as the standby position. (Except B5R)
The stapler waits at the back. The stapling position is the same
as the standby position. (Except B5R)
3)
Middle 2-point stapling
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler first staples a paper stack at the rear stapling posi-
tion and then staples it at the front stapling position.
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler first staples a paper stack at the rear stapling posi-
tion and then staples it at the front stapling position.
4)
Middle 2-point stapling (bind mode)
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler first staples a paper stack at the rear stapling posi-
tion and then staples it at the front stapling position.
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler first staples a paper stack at the rear stapling posi-
tion and then staples it at the front stapling position.
Stapling Operation Sequence
Rear 1-point Stapling of 2 Sheets
Rear 1-point Stapling of 2 Sheets
Feed direction
Stapling position
Stopper
Stapler
Standby position
Feed direction
Stapler
Stopper
Standby position
Stapling position
Stapling position
Feed direction
Standby position
Stapler
Stapling position
Stopper
Stapling position
Feed direction
Standby position
Stapler
Stopper
Stapling position
Stapling position
Host machine delivery signal
Start signal
Entry paper sensor (FED)
Alignment tray sensor
(FAD)
(FAD)
Feed motor (FFM)
Bundle exit motor (FAM)
Paddle motor (FPM)
Paddle home position
sensor (FPDHPD)
sensor (FPDHPD)
Bundle roller home
position sensor (FARHPD)
position sensor (FARHPD)
Staple safety switch
(FSSSW)
(FSSSW)
Alignment motor (front)
(FFJM)
(FFJM)
Alignment home position
sensor (front) (FFJHPD)
sensor (front) (FFJHPD)
Staple motor (FFSM)
Staple drive home position
sensor (FSHPD)
sensor (FSHPD)
: CW ro tatio n
∗
Variable by the size
: CCW rotation
Exit belt home position
sensor (FOBHPD)
sensor (FOBHPD)
4ms (A4)
∗
4ms (A4)
∗
Stack delivery
10msec
20msec
Staple
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