Sharp MX-FN19 / MX-FN20 / MX-PN12 Service Manual / Specification ▷ View online
MX-FN19 OPERATIONAL DESCRIPTION 6 – 20
F. Stitch operation
To enable stitching at two locations on a stack, two stitcher units
(front, rear) are used. Each stitcher unit is equipped with a stitcher
motors (FSFSTM, FSRSTM) for drive, a stitcher home position
sensors (FSSHP2, FSSHP1) for detection of position and a staple
sensors (FSSD2, FSSD1) for detection of the presence/absence of
staples.
The stitcher base is designed so that it may be drawn out to the
front from the saddle stitcher for replacement of the staple cartridge
or removal of a staple jam. The stitcher unit in sensor (FSSIND) is
used to make sure that the stitcher base is properly fitted to the
saddle stitch unit.
Safety switches are not mounted for the saddle stitch unit (front,
rear), as the location does not allow access by the user.
(front, rear) are used. Each stitcher unit is equipped with a stitcher
motors (FSFSTM, FSRSTM) for drive, a stitcher home position
sensors (FSSHP2, FSSHP1) for detection of position and a staple
sensors (FSSD2, FSSD1) for detection of the presence/absence of
staples.
The stitcher base is designed so that it may be drawn out to the
front from the saddle stitcher for replacement of the staple cartridge
or removal of a staple jam. The stitcher unit in sensor (FSSIND) is
used to make sure that the stitcher base is properly fitted to the
saddle stitch unit.
Safety switches are not mounted for the saddle stitch unit (front,
rear), as the location does not allow access by the user.
5. Stack tray operation
A. Tray operation
This machine has two delivery trays, No.1 tray (upper) and No.2
tray (lower). The upper and lower trays can move up and down
independently.
The No.1 tray is moved up and down by the No.1 tray shift motor
(FTLM1), and No.2 tray by the No.2 tray shift motor (FTLM2).
The No.1 tray paper sensor (FBED1) and the No.2 tray paper sen-
sor (FBED2) are provided for detection of presence of paper
stacked on the tray.
The stack height sensor (FSLD1) detects the home position of the
No.1 tray, and the second stack height sensor (FSLD2) detects the
home position of the No.2 tray. If paper has already been stacked
on the tray, the home position is located at the top of the stack. If no
paper is stacked on the tray, the home position is located at the
point that the edge of the tray is detected.
The finisher controller PCB starts the drive of the No.1 tray shift
motor (FTLM1) and the No.2 tray shift motor (FTLM2) to return the
tray to its home position as the power supply switch turns on. When
the tray is already at the home position, it is moved away from the
home position once, then returned to that position. When both No.1
tray and No.2 tray are at the home positions, the above operation is
performed for the No.1 tray and No.2 tray in this order.
The finisher controller PCB raises the No.2 tray so that it is at the
delivery port, if the tray specified by the host machine is the No.2
tray.
After paper is stacked on the tray, the No.1 tray shift motor
(FTLM1) or the No.2 tray shift motor (FTLM2) is driven by the pre-
determined pluses, and the tray is lowered. Then, the tray is
returned to its home position for the next stack.
The upper limit and lower limits of tray are detected by the three
area sensors (FAED1, FAED2, FAED3, FAED21, FAED22,
FADE23) on the No.1 tray/No.2 tray shift area sensor PCB. When
the finisher controller PCB detects the upper end or lower end of
the tray, drive of the No.1 tray shift motor (FTLM1) and the No.2
tray shift motor (FTLM2) is stopped.
Excess in stack height of large size and caused when large size
and mixed size paper can be detected by the combination of ON/
OFF of the area sensors (FAED1, FAED2, FAED3, FAED21,
FAED22, FADE23).
The finisher controller PCB cuts off the +24V power of the No.1 tray
shift motor (FTLM1) to stop the operation of the finisher as soon as
the No.1 tray close detector switch (FCCD) turns on.
tray (lower). The upper and lower trays can move up and down
independently.
The No.1 tray is moved up and down by the No.1 tray shift motor
(FTLM1), and No.2 tray by the No.2 tray shift motor (FTLM2).
The No.1 tray paper sensor (FBED1) and the No.2 tray paper sen-
sor (FBED2) are provided for detection of presence of paper
stacked on the tray.
The stack height sensor (FSLD1) detects the home position of the
No.1 tray, and the second stack height sensor (FSLD2) detects the
home position of the No.2 tray. If paper has already been stacked
on the tray, the home position is located at the top of the stack. If no
paper is stacked on the tray, the home position is located at the
point that the edge of the tray is detected.
The finisher controller PCB starts the drive of the No.1 tray shift
motor (FTLM1) and the No.2 tray shift motor (FTLM2) to return the
tray to its home position as the power supply switch turns on. When
the tray is already at the home position, it is moved away from the
home position once, then returned to that position. When both No.1
tray and No.2 tray are at the home positions, the above operation is
performed for the No.1 tray and No.2 tray in this order.
The finisher controller PCB raises the No.2 tray so that it is at the
delivery port, if the tray specified by the host machine is the No.2
tray.
After paper is stacked on the tray, the No.1 tray shift motor
(FTLM1) or the No.2 tray shift motor (FTLM2) is driven by the pre-
determined pluses, and the tray is lowered. Then, the tray is
returned to its home position for the next stack.
The upper limit and lower limits of tray are detected by the three
area sensors (FAED1, FAED2, FAED3, FAED21, FAED22,
FADE23) on the No.1 tray/No.2 tray shift area sensor PCB. When
the finisher controller PCB detects the upper end or lower end of
the tray, drive of the No.1 tray shift motor (FTLM1) and the No.2
tray shift motor (FTLM2) is stopped.
Excess in stack height of large size and caused when large size
and mixed size paper can be detected by the combination of ON/
OFF of the area sensors (FAED1, FAED2, FAED3, FAED21,
FAED22, FADE23).
The finisher controller PCB cuts off the +24V power of the No.1 tray
shift motor (FTLM1) to stop the operation of the finisher as soon as
the No.1 tray close detector switch (FCCD) turns on.
Stitch home position sensor
(front)(FSSHP2)
Stitch motor (front)(FSFSTM)
Stitch home position sensor
Stitch home position sensor
(back)(FSSHP1)
Stitch motor (back)(FSRSTM)
No.1 paper sensor (FS1PD)
Alignment motor (FSJM)
:Alignment
:Escape
Cam
Pedestal
Stitcher (back)
Stitcher (front)
Stack
Rack
No.1 tray paper sensor (FBED1)
No.1 tray close detection switch (FCCD)
No.1 tray shift
motor (FTLM1)
No.1 tray shift
area sensor PCB
No.2 tray shift
motor (FTLM2)
No.2 tray shift
area sensor PCB
No.2 tray paper sensor (FBED2)
Rack
Shielding plate
MX-FN19 OPERATIONAL DESCRIPTION 6 – 21
B. Shutter operation
If the No.1 tray passes the delivery slot while any paper stack is
present on the No.1 tray, stacked paper may be caught by the
delivery slot. The delivery slot is equipped with the shutter to pre-
vent such a trouble. When the No.1 tray passes the delivery slot,
the shutter is closed. This operation is implemented even if no
paper is stacked on the tray.
When the delivery motor (FAM) is rotated while the shutter open/
close clutch (FSHC) and the delivery lower roller clutch (FAORC)
are on, the shutter is raised (closed) and lowered (opened, delivery
is enabled) when the motor runs reverse. Opening and closing of
the shutter is detected by the shutter home position sensor
(FSHTD).
present on the No.1 tray, stacked paper may be caught by the
delivery slot. The delivery slot is equipped with the shutter to pre-
vent such a trouble. When the No.1 tray passes the delivery slot,
the shutter is closed. This operation is implemented even if no
paper is stacked on the tray.
When the delivery motor (FAM) is rotated while the shutter open/
close clutch (FSHC) and the delivery lower roller clutch (FAORC)
are on, the shutter is raised (closed) and lowered (opened, delivery
is enabled) when the motor runs reverse. Opening and closing of
the shutter is detected by the shutter home position sensor
(FSHTD).
Detected item
No.1tray shift area sensor PCB
Area sensor 1
(FAED3)
Area sensor 2
(FAED2)
Area sensor 3
(FAED1)
No.1 tray upper limit
ON
ON
ON
Excess in number of
sheets stacked,
over 650 sheets
sheets stacked,
over 650 sheets
OFF
ON
ON
Excess in number of
sheets stacked,
over 1550 sheets
(No.1tray lower
limit)
sheets stacked,
over 1550 sheets
(No.1tray lower
limit)
OFF
ON
OFF
Detected item
No.2 tray shift area sensor PCB
Area sensor 1
(FAED23)
Area sensor 2
(FAED22)
Area sensor 3
(FAED21)
No.2 tray upper limit
ON
OFF
ON
Excess in number of
sheets stacked,
over 650 sheets
sheets stacked,
over 650 sheets
OFF
ON
ON
Excess in number of
sheets stacked,
over 1550 sheets
sheets stacked,
over 1550 sheets
OFF
ON
OFF
Excess in number of
sheets stacked,
over 1700 sheets
sheets stacked,
over 1700 sheets
OFF
OFF
OFF
Excess in number of
sheets stacked,
over 2450 sheets
sheets stacked,
over 2450 sheets
ON
OFF
OFF
No.2 tray lower limit
(finisher)
(finisher)
ON
ON
OFF
No.2 tray lower limit
(saddle finisher)
(saddle finisher)
ON
ON
ON
Paper height sensor (FSLD1)
No.2 tray paper height
sensor (FSLD2)
Paper height sensor flag
Edge
No.1 tray
Paper height
sensor flag
Edge
No.2 tray
Delivery lower roller clutch (FAORC)
Delivery roller (lower)
Delivery motor (FAM)
Shutter home position
sensor (FSHTD)
Shutter
Shutter open/close clutch (FSHC)
MX-FN19 OPERATIONAL DESCRIPTION 6 – 22
6. Punch module (MX-PN12A/B/C/D)
A. Basic operations
(1) Outline
The punch module is an option, and is designed for installation
between the host machine and the paper path of the finisher.
When the sheets from the host machine reach the punch module,
they are fed by the punch feed roller. When the trailing edge of a
sheet from the host machine reaches the punch module, the sheet
is stopped once, and the punch shaft is rotated to punch a hole
along the trailing edge. These operations are controlled by the fin-
isher control PCB, and the components of the punch module are
driven by the punch controller PCB.
between the host machine and the paper path of the finisher.
When the sheets from the host machine reach the punch module,
they are fed by the punch feed roller. When the trailing edge of a
sheet from the host machine reaches the punch module, the sheet
is stopped once, and the punch shaft is rotated to punch a hole
along the trailing edge. These operations are controlled by the fin-
isher control PCB, and the components of the punch module are
driven by the punch controller PCB.
B. Punching operation
(1) Outline
The punch module is located in the paper path from the host
machine to the finisher, and is used to punch holes in sheets when-
ever they are stopped once. The sheets from the host machine are
led by the punch feed roller. When the trailing edge of a sheet
reaches the punch module, the punch feed roller stops the sheet
once to punch a hole along the trailing edge of the sheet.
Names and functions of the motors and sensors to be used for
punch operation are shown below.
machine to the finisher, and is used to punch holes in sheets when-
ever they are stopped once. The sheets from the host machine are
led by the punch feed roller. When the trailing edge of a sheet
reaches the punch module, the punch feed roller stops the sheet
once to punch a hole along the trailing edge of the sheet.
Names and functions of the motors and sensors to be used for
punch operation are shown below.
(2) Control configuration
The punch module has a die and hole puncher (punch blade). The
hole puncher is driven by the punch motor (FPNM). It is attached to
the eccentric cam of the punch shaft, and rotation of the punch
shaft is converted into reciprocating motion for punching operation.
The punch motor (FPNM) is a DC motor. The home position of the
punch shaft is detected by the punch home position sensor
(FPHPD). To make sure that the punch motor (FPNM), which is a
DC motor, stops exactly at its home position, the punch motor is
stopped in relation to the count of the clock pulses kept by the
punch motor clock sensor (FPE). A single punching operation is
executed by rotating the punch shaft 180
hole puncher is driven by the punch motor (FPNM). It is attached to
the eccentric cam of the punch shaft, and rotation of the punch
shaft is converted into reciprocating motion for punching operation.
The punch motor (FPNM) is a DC motor. The home position of the
punch shaft is detected by the punch home position sensor
(FPHPD). To make sure that the punch motor (FPNM), which is a
DC motor, stops exactly at its home position, the punch motor is
stopped in relation to the count of the clock pulses kept by the
punch motor clock sensor (FPE). A single punching operation is
executed by rotating the punch shaft 180
° from its home position.
As many as five light-receiving transistors (photosensor PCB) are
mounted over the inlet paper path of the punch module; on the
other hand, as many as five LEDs (LED PCB) are mounted under
the path, together serving as five sensors. The frontmost sensor
(LED5, PTR5) is used as a trailing edge sensor to detect the train-
ing edge of sheets, and the remaining four (LED1 through LED4,
PTR1 through PTR4) are used as horizontal registration sensors to
detect the rear position of sheets when punching holes.
The punch motor, punch module, and sensors shown above make
up the punch slide unit, which moves to the front/rear to suit the
selected paper size. The movement to the front/rear is driven by
the punch horizontal registration motor (FPSM). The home position
of the punch slide unit is detected by the horizontal registration
home position sensor (FPSHPD), and the horizontal registration
motor (FPSM) is a two-phase stepping motor.
The punch motor and the horizontal registration motor are driven
by the punch controller PCB according to the control commands
from the finisher controller.
The waste paper occurring as the result of punching is collected in
the waste paper case. The case is monitored by the reflection type
sensor (FPDD on the dust full sensor PCB).
mounted over the inlet paper path of the punch module; on the
other hand, as many as five LEDs (LED PCB) are mounted under
the path, together serving as five sensors. The frontmost sensor
(LED5, PTR5) is used as a trailing edge sensor to detect the train-
ing edge of sheets, and the remaining four (LED1 through LED4,
PTR1 through PTR4) are used as horizontal registration sensors to
detect the rear position of sheets when punching holes.
The punch motor, punch module, and sensors shown above make
up the punch slide unit, which moves to the front/rear to suit the
selected paper size. The movement to the front/rear is driven by
the punch horizontal registration motor (FPSM). The home position
of the punch slide unit is detected by the horizontal registration
home position sensor (FPSHPD), and the horizontal registration
motor (FPSM) is a two-phase stepping motor.
The punch motor and the horizontal registration motor are driven
by the punch controller PCB according to the control commands
from the finisher controller.
The waste paper occurring as the result of punching is collected in
the waste paper case. The case is monitored by the reflection type
sensor (FPDD on the dust full sensor PCB).
Motor or sensors
Functions
Punch motor (FPNM)
Drive of punch module
Horizontal registration motor (FPSM)
Drive of punch slide unit
Punch feed motor (FSIFM)
Drive of punch feed roller
Horizontal registration home position
sensor (FPSHPD)
sensor (FPSHPD)
Detection of home position of
punch slide unit
punch slide unit
Punch motor clock sensor (FPE)
Clock detection of punch motor
Punch home position sensor
(FPHPD)
(FPHPD)
Detection of home position of
punch shaft
punch shaft
Horizontal registration sensor (LED 1
to LED4, PTR1 to PTR4)
to LED4, PTR1 to PTR4)
Detection of edge in the back side
of paper
of paper
Trailing edge sensor (LED 5, PTR5)
Detection of trailing edge of paper
Dust full sensor (FPDD)
Detection of punch dust full
Finisher unit
control system
Punch
control
PCB
Horizontal
registration
drive system
Punch
drive
system
Feed
drive
system
Punch control PCB (1/2)
Punch control PCB (2/2)
Trailing
edge
detector
signal
(LED5,PTR5)
PAEND
W
aste
full
detection
signal
(FPDD)
DFULL
Horizontal
registration
home
position
(FPSHPD)
detection
signal
SREGHP
Punch
feed
motor
(FSIFM)
drive
signal
Horizontal
registration
motor
(FPSM)
drive
signal
Horizontal
registration
detection
signal
(LED1-4,PTR1-4)
SREG1-4
Punch
motor
(FPNM)
drive
signal
Punch
motor
clock
(FPE)
detection
signal
PUNCHCLK
Punch
home
position
(FPHPD)
detection
signal
PUNCHHP
MX-FN19 OPERATIONAL DESCRIPTION 6 – 23
(3) Punching operation
The hole puncher is driven by the punch motor (FPNM). The home
position for the hole puncher is detected by the punch home posi-
tion sensor (FPHPD).
The hole puncher punches a hole when the punch shaft is rotated
180
position for the hole puncher is detected by the punch home posi-
tion sensor (FPHPD).
The hole puncher punches a hole when the punch shaft is rotated
180
° from the home position, causing the punch to make a single
round trip. The 2/3-hole type punches a hole, but the circumference
of the punch shaft is divided into two (half for 2-hole and the other
half for 3-hole). Selection of the 2-hole type or 3-hole type depends
on the commands from the host machine.
1) 2-Hole, 4-Hole Type
of the punch shaft is divided into two (half for 2-hole and the other
half for 3-hole). Selection of the 2-hole type or 3-hole type depends
on the commands from the host machine.
1) 2-Hole, 4-Hole Type
The home position is identified when the punch home position
sensor is ON. The punching operation for the first sheet ends
when the punch shaft has rotated 180
sensor is ON. The punching operation for the first sheet ends
when the punch shaft has rotated 180
° and the
punch home position sensor goes ON from OFF; the punching
operation for the second sheet ends when the punch shaft has
rotated 180
operation for the second sheet ends when the punch shaft has
rotated 180
° in reverse and the punch home position sensor
goes ON from OFF.
Punch operation in the case of two sheets is as shown below.
a)
Punch operation in the case of two sheets is as shown below.
a)
A hole is punched along the trailing edge of the 1st sheet.
b)
A hole is made along the trailing edge of the 2nd sheet.
2) 2/3-Hole Type
The home position is identified when the punch home position
sensor is ON. To make two holes, the punching operation for
the first sheet ends when the punch shaft rotates 180
sensor is ON. To make two holes, the punching operation for
the first sheet ends when the punch shaft rotates 180
° (half cir-
cumference) and the punch home position sensor goes ON. At
this time, the 3-hole puncher makes a single round trip in
escape direction (moving up the hole puncher) on a half cir-
cumference of the punch shaft. The punching operation for the
second sheet ends when the punch shaft has rotated 180
this time, the 3-hole puncher makes a single round trip in
escape direction (moving up the hole puncher) on a half cir-
cumference of the punch shaft. The punching operation for the
second sheet ends when the punch shaft has rotated 180
°
counterclockwise and the punch home position sensor goes
ON.
At this time, the 3-hole puncher makes a single round trip in
escape direction (moving up the hole puncher) on the other
half circumference of the punch shaft. The punching operation
takes place as shown below when making two holes in two
sheets of paper.
ON.
At this time, the 3-hole puncher makes a single round trip in
escape direction (moving up the hole puncher) on the other
half circumference of the punch shaft. The punching operation
takes place as shown below when making two holes in two
sheets of paper.
a)
A hole is punched along the trailing edge of the 1st sheet.
While two holes are being made, the 3-hole puncher
makes a single round trip in escape direction (moving up
the hole puncher).
makes a single round trip in escape direction (moving up
the hole puncher).
b)
Holes are made along the trailing edge of the 2nd sheet.
While two holes are being made, the 3-hole puncher
makes a single round trip in escape direction (moving up
the hole puncher).
makes a single round trip in escape direction (moving up
the hole puncher).
Punch home
position sensor (FPHPD) Sensor flag
Punch shaft
Eccentric cam
Die
Die
Hole
puncher
Paper
[punch shaft at rest/
home position]
Waste paper
[punch shaft CW rotation
by 90°/hole made]
[punch shaft CW rotation by 180°/
end of punching operation]
[punch shaft at rest/
home position]
[punch shaft CCW rotation
by 90°/hole made]
[punch shaft CCW rotation by 180°/
end of punching operation]
Punch home
position sensor (FPHPD) Sensor flag
Punch shaft
Eccentric cam
Die
Die
Hole
puncher
Paper
[punch shaft at rest/
home position]
Waste paper
[punch shaft CW rotation
by 90°/hole made]
[punch shaft CW rotation by 180°/
end of punching operation]
[punch shaft at rest/
home position]
[punch shaft CW rotation
by 90°/punch at upper limit]
[punch shaft CW rotation by 180°/
punch back to initial position]
[punch shaft at rest/
home position]
[punch shaft CCW rotation
by 90°/hole made]
[punch shaft CCW rotation by 180°/
end of punching operation]
[punch shaft at rest/
home position]
[punch shaft CCW rotation
by 90°/punch at upper limit]
[punch shaft CCW rotation by 180°/
punch back to initial position]
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