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MX-FNX2 (serv.man7)
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17
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644.98 KB
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Service Manual
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Device
Copying Equipment / Section 5 - Operational Descriptions .
File
mx-fnx2-sm7.pdf
Date

Sharp MX-FNX2 (serv.man7) Service Manual ▷ View online

MX-FNX2/AR-PN1/MX-RBX1  OPERATIONAL DESCRIPTION  5 – 5
d. Saddle Delivery
The machine deposits a stack of sheets on the processing tray, sta-
ples it (middle 2-point), and then moves it to the saddle unit. The
saddle unit folds the stack in two, and delivers it to the bind tray.
B. Feed/Delivery
(1) Outline
The machine forwards the sheets coming from its host machine to
the delivery tray, processing tray, or saddle unit according to the
type of delivery used. The sheets forwarded to the processing tray
or the saddle unit are offset, stapled, or folded.
The following table shows the motors that are associated with mov-
ing and aligning sheets. These motors are controlled (rotated clock-
wise or counterclockwise) by the microprocessor (CPU) on the
finisher controller PCB.
The paper path is equipped with the sensors shown in the following
figure used to monitor the arrival or passage of sheets.
If a sheet fails to arrive at or move past a specific sensor within a
specific period of time, the finisher controller will assume a jam, and
stops the ongoing operation and, at the same time, communicates
the presence of a jam to the host machine.
Notation
Name
Description
Connector on 
finisher 
controller PCB
FFM
Feed motor
Stepping motor
CN10
FPM
Paddle motor
Stepping motor
CN10
FAM
Bundle exit motor
Stepping motor
CN13
FFJM
Alignment plate motor 
(front)
Stepping motor
CN3
FRJM
Alignment plate motor 
(rear)
Stepping motor
CN3
FFSM
Staple motor
Brush DC motor
CN6
FJPM
Interface transport motor
Stepping motor
CN21
Notation
Name
Description
Connector on 
finisher 
controller PCB
FED
Entry paper sensor
Photointerrupter
CN16
FFPD
Bookbinding position 
sensor
Photointerrupter
CN16
Staple
motor
drive
signal
BINDMTR
Bookbinding
lock
sensor
detect
signal
BIND_CLK
Finisher controller PCB (1/2)
Lift
m
otor
drive
signal
SIFTMTR
Bundle
exit
motor
drive
signal
EJCTMTR
Staple
slide
motor
drive
signal
SLIDMTR
Paddle
motor
drive
signal
PDLMTR
Alignment
motor
(rear)
drive
signal
RJOGMTR
Bind
clutch
dr
iv
e
signal
B_CLU
Interface
transport
m
otor
drive
signal
RIM
Alignment
motor
(front)
drive
signal
FJOGMTR
FFE
FRJM
FPM
FFSM
FFC
FAM
FSM
FLM
FFJM
FJPM
FFM
Finisher controller PCB (2/2)
Feed
motor
drive
signal
F
EEDMTR
Finisher controller PCB
FFPD
Bookbinding
position
detect
signal
BIND_P
FED
Entry
paper
detect
signal
ENT_S
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.
(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.
(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
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.
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)
Alignment motor (front)
(FFJM)
Aligning home position sensor (front)
(FFJHPD)
Alignment
motor (rear)
(FRJM)
Light-shielding plate
(Front)
Paper
Light-shielding plate
Aligning home position sensor (rear)
(FRJHPD)
Aligning plate
(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.
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.
Sensor
Symbol
Connector
Function
Remarks
Staple shift 
home position 
sensor
FSTHPD
CN11-3
Detects the home 
position for the 
stapler moving 
back and forth.
Staple drive 
home position 
sensor
FSHPD
CN11-4
Detects the home 
position for the 
stapling operation
In the 
stapler
Self prime 
sensor
FSPD
CN11-5
Detects presence 
or absence of 
staples in the 
cartridge.
In the 
stapler
Staple empty 
sensor
FSD
CN11-6
Cartridge empty 
detection
In the 
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)
Alignment tray sensor
(FAD)
Feed motor (FEM)
Bundle exit motor (FAM)
Delivery belt home
position sensor (FOBHPD)
Paddle motor (FPM)
Paddle home position
sensor (FPDHPD)
Bundle roller home position
sensor (FARHPD)
Staple safety switch
(FSSSW)
Alignment motor (front)
(FFJM)
Alignment home position
sensor (front) (FFJHPD)
Alignment motor (rear)
(FRJM)
Alignment home position
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)
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
Paper stack
Delivery tray
Paddle motor (
FPM)
Bundle roller home
position sensor
(FARHPD)
Light-shielding plate
Staple safety
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.
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.
Stapler
Swing guide
Stack delivery
roller (lower)
Paper stack
Delivery tray
Delivery belt
Paddle motor (FPM)
Swing guide
Stack delivery
roller (lower)
Stack delivery roller
(upper)
Stack roller home position
sensor (FARHPD)
Light-shielding plate
Staple safety
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
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