Sharp MX-FNX2 (serv.man7) Service Manual ▷ View online
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
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 10
4. Delivery Tray Operation
A. Outline
The machine has a delivery tray in the finisher unit and a bind tray
in the saddle unit.
The bind tray in the saddle unit is of the fixed type and all the folded
paper stacks are delivered to this tray. This tray has a bind tray
sensor (FFED) to detect presence/absence of paper.
The delivery tray in the finisher unit is moved up and down using a
lift motor (FLM).
The finisher has a tray paper sensor (FBED) to detect presence/
absence of paper on the stack tray.
The home position sensor of the delivery tray is detected by the
paper surface sensor (FSLD). When paper has already been
stacked on the delivery tray, the home position is on the top surface
of the stacked paper. When paper has not yet been stacked on the
delivery tray, the home position is at the position where the edge of
the delivery tray is detected. At power-on, the finisher controller
PCB drives the lift motor (FLM) to return the delivery tray to the
home position.
When the paper coming from the processing tray is stacked on the
delivery tray, the lift motor (FLM) is driven a specified number of
pulses, causing the delivery tray to descend. Clock pulses are
detected by the lift lock sensor (FLE). Then, the delivery tray
returns to the home position for the next stacking operation.
The upper limit of the delivery tray is detected by the lift upper limit
sensor (FULD). When the lift upper limit sensor (FULD) is turned
ON, the finisher controller PCB stops the lift motor (FLM) that is
ascending.
The lower limit of the delivery tray is detected by the lift lower limit
sensor (FLLD). When the lift lower limit sensor (FLLD) is turned
ON, the finisher controller PCB stops the lift motor (FLM) that is
descending.
The finisher unit has a tray middle sensor (FMLD) to detect over-
stacking of large-size or mixed paper according to the stack height.
in the saddle unit.
The bind tray in the saddle unit is of the fixed type and all the folded
paper stacks are delivered to this tray. This tray has a bind tray
sensor (FFED) to detect presence/absence of paper.
The delivery tray in the finisher unit is moved up and down using a
lift motor (FLM).
The finisher has a tray paper sensor (FBED) to detect presence/
absence of paper on the stack tray.
The home position sensor of the delivery tray is detected by the
paper surface sensor (FSLD). When paper has already been
stacked on the delivery tray, the home position is on the top surface
of the stacked paper. When paper has not yet been stacked on the
delivery tray, the home position is at the position where the edge of
the delivery tray is detected. At power-on, the finisher controller
PCB drives the lift motor (FLM) to return the delivery tray to the
home position.
When the paper coming from the processing tray is stacked on the
delivery tray, the lift motor (FLM) is driven a specified number of
pulses, causing the delivery tray to descend. Clock pulses are
detected by the lift lock sensor (FLE). Then, the delivery tray
returns to the home position for the next stacking operation.
The upper limit of the delivery tray is detected by the lift upper limit
sensor (FULD). When the lift upper limit sensor (FULD) is turned
ON, the finisher controller PCB stops the lift motor (FLM) that is
ascending.
The lower limit of the delivery tray is detected by the lift lower limit
sensor (FLLD). When the lift lower limit sensor (FLLD) is turned
ON, the finisher controller PCB stops the lift motor (FLM) that is
descending.
The finisher unit has a tray middle sensor (FMLD) to detect over-
stacking of large-size or mixed paper according to the stack height.
5. Saddle Unit
A. Basic Operations
(1) Outline
The machine stitches a stack of sheets (middle 2-point), then folds
the stack in two in the finisher. These operations are controlled by
the finisher controller PCB.
The finisher controller PCB is controlled by the commands from the
host machine.
the stack in two in the finisher. These operations are controlled by
the finisher controller PCB.
The finisher controller PCB is controlled by the commands from the
host machine.
B. Feed/Drive System
(1) Outline
This machine stitches the paper stack coming from the finisher,
folds it, and delivers it to the bind tray in the saddle unit in response
to the commands from the host machine.
That is, the machine performs the following operations:
a. Paper feed-in
b. Stitching
c. Stack feed
d. Folding/delivery
folds it, and delivers it to the bind tray in the saddle unit in response
to the commands from the host machine.
That is, the machine performs the following operations:
a. Paper feed-in
b. Stitching
c. Stack feed
d. Folding/delivery
a. Paper feed-in
After being aligned on the processing tray, a stack of sheets is
sandwiched between the stack delivery rollers. As the stack deliv-
ery rollers rotate, the stack is fed toward the saddle unit.
After being aligned on the processing tray, a stack of sheets is
sandwiched between the stack delivery rollers. As the stack deliv-
ery rollers rotate, the stack is fed toward the saddle unit.
Tray paper sensor
(FBED)
Lift motor (FLM)
Lift lock sensor
(FLE)
(FLE)
Lift lower sensor
(FLLD)
(FLLD)
Tray middle sensor
(FMLD)
(FMLD)
Lift upper sensor
(FULD)
(FULD)
Delivery tray
Paper level sensor
(FSLD)
Edge
a) Paper feed-in
b) Stitching
c) Stack feed
d) Folding/delivery
Stack delivery roller (upper)
Paper stack
Stack delivery roller
(lower)
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 11
b. Stitching
When the center of the paper stack (stitching position) reaches the
stapler's staple position, the stapler stitches the paper stack.
When only one sheet is fed from the host machine, the next step
(stack feed) is performed without performing the stitching opera-
tion.
When the center of the paper stack (stitching position) reaches the
stapler's staple position, the stapler stitches the paper stack.
When only one sheet is fed from the host machine, the next step
(stack feed) is performed without performing the stitching opera-
tion.
c. Stack feed
The stack feed rollers feed the paper stack to the stack folding/
delivery position where the center of the stack (stitched position) is
level with the paper pushing plate and paper folding roller's nip part.
The stack feed rollers feed the paper stack to the stack folding/
delivery position where the center of the stack (stitched position) is
level with the paper pushing plate and paper folding roller's nip part.
d. Folding/delivery
The paper pushing plate pushes in the center of the paper stack to
feed it toward the paper fold rollers. Then, the paper fold rollers and
bind delivery rollers deliver the paper stack to the bind tray.
The paper pushing plate pushes in the center of the paper stack to
feed it toward the paper fold rollers. Then, the paper fold rollers and
bind delivery rollers deliver the paper stack to the bind tray.
C. Paper Feed System
(1) Outline
The paper feed system feeds a stack of sheets (coming from the
finisher) to the position where the center of the paper stack (stitch-
ing position) is aligned to the stapler's staple, allowing the next step
(stitching and folding) to be performed.
When sheets of paper have been stacked and aligned on the pro-
cessing tray, the paddle motor (FPM) rotates in the reverse direc-
tion, causing the swing guide to descend. As the swing guide
descends, the paper stack is sandwiched between the upper and
lower stack delivery rollers. The stack delivery motor (FAM) rotates
in the reverse direction, feeding the paper stack toward the saddle
unit. When the leading edge of the paper stack reaches the binding
position sensor (FFPD), the finisher controller PCB drives the stack
delivery motor (FAM) a specified number of motor pulses to stop
the center of the paper stack (stitching position) at the stapler's sta-
ple position. Before the paper stack passes through the stack feed
rollers, the feed motor (FFM) is driven to rotate the stack feed roller
(lower) so that the leading edge of the paper stack is not bent.
finisher) to the position where the center of the paper stack (stitch-
ing position) is aligned to the stapler's staple, allowing the next step
(stitching and folding) to be performed.
When sheets of paper have been stacked and aligned on the pro-
cessing tray, the paddle motor (FPM) rotates in the reverse direc-
tion, causing the swing guide to descend. As the swing guide
descends, the paper stack is sandwiched between the upper and
lower stack delivery rollers. The stack delivery motor (FAM) rotates
in the reverse direction, feeding the paper stack toward the saddle
unit. When the leading edge of the paper stack reaches the binding
position sensor (FFPD), the finisher controller PCB drives the stack
delivery motor (FAM) a specified number of motor pulses to stop
the center of the paper stack (stitching position) at the stapler's sta-
ple position. Before the paper stack passes through the stack feed
rollers, the feed motor (FFM) is driven to rotate the stack feed roller
(lower) so that the leading edge of the paper stack is not bent.
D. Stack Feed System
(1) Outline
The stack feed system feeds the stitched paper stack to the folding
position.
When stitching is complete, the feed motor (FFM) rotates, causing
the stack feed roller (upper) to descend. The paper stack is sand-
wiched between the stack feed rollers. Then, the bind clutch (FFC)
is turned ON to rotate the feed motor (FFM) in the forward direc-
tion, thus feeding the paper stack to the folding position. The feed
amount is equivalent to the number of pulses used to drive the feed
motor (FFM) until the paper stack reaches the folding position.
position.
When stitching is complete, the feed motor (FFM) rotates, causing
the stack feed roller (upper) to descend. The paper stack is sand-
wiched between the stack feed rollers. Then, the bind clutch (FFC)
is turned ON to rotate the feed motor (FFM) in the forward direc-
tion, thus feeding the paper stack to the folding position. The feed
amount is equivalent to the number of pulses used to drive the feed
motor (FFM) until the paper stack reaches the folding position.
Staple
Stapler (lower)
Stapler (upper)
Paper fold roller
Paper pushing plate
Stack feed roller (upper)
Stack feed roller (lower)
Paper fold rollers
Bind delivery rollers
Stack delivery roller (upper)
Paper stack
Stack delivery roller
(lower)
Stack feed roller (lower)
Fold position sensor
Stack feed roller (upper)
Stack feed roller (lower)
Feed
am
ount
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