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MX-FNX5  DETAILS  5 – 5

The drag roller assembly [A] is fastened to a plate [B] on a shaft by
a spring [C].
The cam [D], in contact with the bottom of the plate, is connected to
the drag drive motor [E] via a timing belt.
The drag drive motor and timing belt rotate the cam against the bot-
tom of the plate to move the rollers forward and back with each
sheet ejected onto the shift tray.
The drag roller motor [F] drives the shaft [G] that rotates the drag
rollers counterclockwise as the rollers move back. The simulta-
neous rotation and backward movement of the roller assembly
pulls each sheet back toward the copier to align the edges of the
stack on the shift tray.
The actuator [H] is mounted on the cam and rotating with both
rotating clockwise) and detects the roller assembly home position
when the actuator leaves the gap of the drag drive HP sensor [I]
and signals the machine that the rollers are at the home position.
The machine uses this information to control paper feed timing and
confirm that the mechanism is operating correctly. The cam and
actuator make one complete rotation for every sheet fed out of the
machine onto the shift tray.

The movement of the shift tray is controlled by four sensors (1), (2),
(3), and (4) and a feeler [A] with two actuators [B] and [C].

• The notched actuator [B] is used with sensors (1) and (2).
• The flat actuator [C] is used with sensor (3).
• Sensor (4) is provided with its own actuator [D].
The operation mode determines which parts are used to control the
movement of the shift tray.
Sensor Names

These operations are described in more detail in the following sec-
tions.

[A]

[B]

[C]

[D]

[E]

[F]

[G]

[H]

[I]

[A]

[B]

[C]

[D]

(1)

(4)

(2)

(3)

(1)

Paper Height Sensor - Staple Mode

(2)

Paper Height Sensor - Standby Mode

(3)

Paper Height Sensor - Z-Fold Full

(4)

Paper Height Sensor - Shift/Z-Fold

Shift

Sensor (4) detects the amount of paper on the shift 
tray in shift mode to control operation of the tray lift 
motor.

Staple

Sensor (1) detects the amount of paper on the shift 
tray in staple mode to control the tray lift motor.

Standby

• When the machine is turned on, Sensor (2) is 

used to position the tray at the standby position 
and keep it there when the shift is not in use or 
when the upper tray (proof tray) is used.

• If the shift tray is not attached to the machine (if it 

has been removed for servicing, for example), if 
the machine is switched on the tray mount will 
push up the feeler and switch off Sensor (2)  to 
switch off the tray lift motor. (Sensor (4) cannot 
operate if the tray has been removed.)

Z-Fold, Z-Fold 
Staple

• Sensor (4) detects the height of the tray when the 

output includes Z-folded sheets with and without 
stapling.

• Sensor (3) detects when the tray is full when the 

output includes Z-folded sheets with and without 
stapling.

(1)

(2)

(3)

(4)

MX-FNX5  DETAILS  5 – 6

Standby Mode
When the machine is switched on:
1)

The shift tray lift motor switches on and lowers the tray.

2)

The feeler [A] descends and raises the hooked actuator [B] out
of the gap of Sensor (2)  and switches Sensor (2)  ON.

3)

When Sensor (2) switches ON this reverses the shift tray
motor.

4)

The shift tray motor raises the shift tray and pushes up the
feeler, the actuator descends into the gap of Sensor (2), and
switches Sensor  (2) OFF.

5)

When Sensor (2) switches OFF, this stops the shift tray lift
motor with the shift tray at the standby position.

This sequence repeats every time the machine is powered on.
Sensor (2) also switches off the shift tray lift motor when the
machine is switched on with the shift tray removed for servicing.
When the machine is switched on without the shift tray attached to
the side of the finisher:
1)

The shift tray mount will push the feeler [A] up until the actua-
tor [B] enters the gap of Sensor (2) and switches Sensor 2 ON.

2)

When Sensor (2) switches ON this switches the shift tray
motor OFF and stops the tray.
NOTE: 
Sensor (4) cannot operate with the shift tray removed so Sen-
sor (2) is used to switch off the shift tray motor and stop the
shift tray mount.

Sensor (4) and its feeler [A] and actuator [B] control the movement
of the shift tray when paper is output in the sort/stack mode:
1)

Paper is output to the tray.

2)

As the height of the stack increases, this pushes up the feeler
[A].

3)

When the actuator [B] of the ascending feeler actuates Sensor
(4), this switches the sensor OFF and switches the tray lift
motor ON.

4)

The tray lift motor lowers the tray until the feeler descends far
enough to raise the actuator out of the gap of Sensor  (4).

5)

When the actuator leaves the gap of Sensor (4), this switches
Sensor (4) ON, switches the motor OFF, and stops the tray.

The sequence repeats until the end of the job or until the tray
becomes full. (

9. SHIFT TRAY OPERATION -F.)

[A]

[B]

(2)

(4)

[A]

[B]

(4)

[A]

[B]

(1)

MX-FNX5  DETAILS  5 – 7

Sensor (1), feeler [A] and its notched actuator [B] control the move-
ment of the shift tray when paper is output to the shift tray in the
staple mode:
1)

A stapled stack is output to the tray.

2)

The tray lift motor switches ON and lowers the tray the pre-
scribed distance.

3)

Next, the tray lift motor raises the tray and feeler [A] until actu-
ator [B] leaves the gap of Sensor (1).

4)

When the actuator [b] leaves the gap of sensor (1), this
switches Sensor (1) OFF and switches the tray lift motor OFF.

This sequence repeats every time a stack is output to the tray until
the end of the job or until the tray becomes full. (

9. SHIFT

TRAY OPERATION -F.)

Sensor (4) and its feeler [A] and actuator [B], and Sensor (3) with
its feeler [C] and flat actuator [D] control the movement of the shift
tray when Z-folded paper is output to the shift tray.
1)

Z-folded paper is output to the tray.

2)

As the height of the stack increases, this pushes up feeler [A]
of Sensor (4).

3)

When the actuator [B] of the ascending feeler enters the gap of
Sensor (4), this switches the sensor OFF and switches the tray
lift motor ON.

4)

The tray lift motor lowers the tray until the feeler descends far
enough to raise the actuator out of the gap of Sensor (4).

5)

When the actuator leaves the gap of Sensor (4), this switches
Sensor (4) ON, switches the motor OFF, and stops the tray.

6)

Steps 1 to 5 repeat until the top of the paper stack pushes
feeler [C] up and actuator [C] into the gap of Sensor (3).

7)

When the actuator enters the gap of Sensor (3), this switches
the sensor off and switches Sensor (3) OFF, signals that the
tray is full and stops the job.

This machine has two shift tray full sensors: the shift tray full sensor
(large paper) [A] for B4 and larger, and the shift tray full sensor [B]
for small paper (smaller than B4).
NOTE: 
Sensor [C] (S20) is the near-full sensor.
When the actuator [D] enters sensor [A] while using large paper
(about 1500 sheets are on the tray), a message will be displayed
and copying will stop.
When the actuator [D] enters sensor [B] while using small paper
(about 3,000 sheets are on the tray), a message will be displayed
and copying will stop.

In sort/stack mode, the shift tray [A] moves from side to side to sep-
arate the sets of copies.
The horizontal position of the shift tray is controlled by the shift
motor [B] and shift gear disk [C]. After one set of copies is made
and delivered to the shift tray, the shift motor turns on, driving the
shift gear disk and the shaft [D]. The end fence [E] is positioned by
the shaft, creating the side-to-side movement.

[A]

[B]

[C]

[D]

(3)

(4)

[A]

[B]

[C]

[D]

[F]

[C]

[A]

[E]

[D]

[B]

[G]

(1)

(2)

MX-FNX5  DETAILS  5 – 8

The next set of copies is then delivered. The motor turns on,
repeating the same process and moving the tray back to the previ-
ous position.
The disk is rotated alternately clockwise and counter-clockwise
through an arc of 180 degrees.
The notches cut into the shift gear disk control the operation of the
shift motor, using shift tray half-turn sensors [F] and [G].
If the job ends with the disk at (1) with only one sensor deactivated,
the motor rotates the disk to the (2) position where both sensors
are deactivated. This is the home position.

The punch unit makes 2 or 3 holes at the trailing edge of the paper.
The number of holes depends on a selection made on the opera-
tion panel.
The cam [A] has 2 punches on one side and 3 punches on the
other, and is turned by the punch motor [B]. The punch motor turns
on immediately after the trailing edge of the paper passes the
entrance sensor. The punches on the cam rotate downward and
punch holes in the paper.
After punching a sheet of paper, the cam returns to home position
and stops. Home position depends on whether 2 holes or 3 holes
are being made, so there are two punch HP sensors. Punch HP
sensor 1 [C] is used when 2-hole punching is selected, and punch
HP sensor 2 [D] is used when 3-hole punching is selected. When
the cut-out [E] enters the slot of the punch HP in use (sensor 1 or 2-
hole punching) the motor stops.
The knob (not shown) on the front end of the punch unit can be
turned in either direction to clear paper jammed in the punch unit.

Punch waste is collected in the punch waste hopper [A] positioned
under the punch unit.
When the level of the punch waste in the hopper rises as far as the
hole [B] in the hopper, the punch hopper full sensor [C] turns on,
stops the job, and triggers a message on the operation to indicate
that the hopper is full and must be removed and emptied.
The job resumes automatically after the hopper is emptied and
returned to the finisher.
The punch hopper full sensor also functions as the hopper set sen-
sor. When the hopper is not in the finisher, or if it is not inserted
completely, the spring loaded sensor arm rotates up and to the right
with the punch waste sensor away from the hole in the hopper
holder and a message is displayed. The message in this case is
the same as the hopper full message.

[A]

[B]

[C]

[D]

[E]

1

Shift Tray Jogger Retraction Motor

2

Shift Tray Jogger Motor Timing Belt

3

Shift Tray Jogger Motor

4

Shift Tray Jogger Fence Timing Belt

5

Shift Tray Jogger Fences

6

Shift Tray Jogger HP Sensor

7

Shift Tray Jogger Lift HP Sensor

[A]

[B]

[C]