Sharp MX-MF11 Service Manual / Specification ▷ View online
MX-MF11 REPLACEMENT AND ADJUSTMENT 3 – 2
9)
Remove the bottom plate rear right cover [B] (screw x 1).
10) Remove the bottom plate rear left cover [C].
11) Remove the plate [D] and shaft (screw x 1, stopper x 1).
12) Separate the top and bottom of the feed tray
12) Separate the top and bottom of the feed tray
(connector x 2, stopper x 1).
4. Feed rollers
1)
Pull off the pick-up roller cover [A].
2)
Pull off the separation roller cover [B].
3)
Remove the pick-up roller [C] (stopper x 1).
4)
Remove the feed roller [D] (stopper x 1).
5)
Remove the separation roller [E] (stopper x 1).
NOTE: After re-installing the feed roller, make sure that it
rotates clockwise.
NOTE: After re-installing the feed roller, make sure that it
rotates clockwise.
6)
Reset the PM count to zero for the new rollers.
5. Bypass tray PCB
1)
Remove the rear cover. (see 2.)
2)
Remove the bypass tray PCB [A] (connector x 9, screw x 2,
standoffs x 2).
NOTE: Before disconnecting CN210 and CN211, mark either
connector with a marker to make sure that you re-connect
them correctly. The shapes of these connectors are the same
and the wires are the same color.
standoffs x 2).
NOTE: Before disconnecting CN210 and CN211, mark either
connector with a marker to make sure that you re-connect
them correctly. The shapes of these connectors are the same
and the wires are the same color.
6. Paper feed motor, transport motor
1)
Remove the rear cover. (see 2.)
2)
Remove the paper feed motor [A] (screw x 3, spring x 1, timing
belt x 1, connector x 1).
belt x 1, connector x 1).
3)
Remove the transport motor [B] (screw x 3, spring x 1, timing
belt x 1, connector x 1)
belt x 1, connector x 1)
[B]
[C]
[D]
[A]
[B]
[C]
[D]
[E]
Bypass tray PCB [A]
Screw
Paper feed motor [A]
Transport motor [B]
Screw
Screw
MX-MF11 REPLACEMENT AND ADJUSTMENT 3 – 3
7. Paper feed and lift sensors
A. Sensor removal
1)
Remove the rear, front, and top covers. (see 2.)
2)
Remove the paper feed bracket [A] (step screw x 1, screw x 1).
3)
Remove the paper feed sensor [B] (hooks x 3, connector x 1)
4)
Remove the lift sensor bracket [C] (screw x 1).
5)
Remove the lift sensor [D] (hooks x 3, connector x 1).
8. Pick-up solenoid
1)
Remove the rear, front, and top covers. (see 2.)
2)
Remove the pick-up solenoid [A] (screw x 2, connector x 1,
harness clamp x 1)
harness clamp x 1)
NOTE: When re-installing the solenoid, make sure that the arm of
the solenoid is positioned above and in contact with the
plate of the pick-up roller shaft below. To confirm correct
installation, manually move the solenoid to the left and
right. When the solenoid plunger is moved, the pick-up
roller should move up and down smoothly.
plate of the pick-up roller shaft below. To confirm correct
installation, manually move the solenoid to the left and
right. When the solenoid plunger is moved, the pick-up
roller should move up and down smoothly.
9. Paper width switch, paper end and
paper length sensors
1)
Remove the feed tray and separate the top and bottom. (see
3.)
3.)
2)
Turn over the top half of the feed tray [A] then lay it on a flat
surface.
surface.
3)
Remove the cable cover [B] (hooks x 2).
4)
Paper end sensor bracket [C] (hook x1).
5)
Paper end sensor [D] (hooks x 2, connector x 1).
6)
Paper length sensor bracket [E] (hook x 1, screw x 1).
7)
Paper length sensor [F] (hooks x 2, connector x 1).
8)
Paper width switch [G] (screw x 1, harness clamp x 1, connec-
tor x 1).
tor x 1).
[A]
[B]
[C]
[D]
[A]
[B]
[A]
[C]
[D]
[E]
[F]
[G]
MX-MF11 REPLACEMENT AND ADJUSTMENT 3 – 4
10. Paper height sensors, lift motor
1)
Open the bypass tray. (see 1.)
2)
Remove the bypass tray covers. (see 2.)
3)
Remove the feed tray. (see 3.)
A. Paper height sensors
1)
Paper Height Sensor 1 [A] (hooks x 3, connector x 1).
2)
Paper Height Sensor 2 [B] (hooks x 3, connector x 1).
3)
Paper Height Sensor 3 [C] (hooks x 3, connector x 1).
B. Lift motor
1)
Remove screws (screw x 6) then push lift motor [D] to loosen
its frame.
its frame.
2)
Raise the loosened frame slightly to remove the lift motor
(screw x 2, connector x 1).
(screw x 2, connector x 1).
[A]
[B]
[C]
Lift motor [D]
Screw
MX-MF11 DETAILS 4 – 1
MX-MF11
Service Manual
[4] DETAILS
1. Tray lift
When the tray lift switch is pressed, the lift motor [A] switches on
and pushes the lift plate [B] against the bottom of the feed tray until
the top of the stack is at the correct feed position.
and pushes the lift plate [B] against the bottom of the feed tray until
the top of the stack is at the correct feed position.
NOTE: If there is paper in the bypass tray when the main machine
has just been switched on, the lift motor will turn on and lift
the stack to the feed position.
the stack to the feed position.
As paper is fed, the pick-up roller [C] lowers until it activates the lift
sensor which switches on the lift motor again to raise the stack to
the feed level again.
As the bottom plate shaft rotates and raises the bottom plate, the
actuator [D] lowers and activates paper height sensor 1 [E] and
then paper height sensor 2 [F] as the bottom plate continues to
rise. With the tray full, the actuator remains upright and deactivates
neither paper height sensor. During continuous feed, the actuator
rotates downward through three positions, deactivating the first
sensor, then both sensors, then only the second sensor. These
states are used to report the amount of paper on the operation
panel.
sensor which switches on the lift motor again to raise the stack to
the feed level again.
As the bottom plate shaft rotates and raises the bottom plate, the
actuator [D] lowers and activates paper height sensor 1 [E] and
then paper height sensor 2 [F] as the bottom plate continues to
rise. With the tray full, the actuator remains upright and deactivates
neither paper height sensor. During continuous feed, the actuator
rotates downward through three positions, deactivating the first
sensor, then both sensors, then only the second sensor. These
states are used to report the amount of paper on the operation
panel.
After the last sheet feeds, the paper end sensor [G] below the feed
tray detects that the tray is empty.
tray detects that the tray is empty.
NOTE: When you re-load the tray with paper, be sure to press the
tray lift button to raise the bottom of the tray so the stack is
at the correct feed position.
at the correct feed position.
2. Paper feed
A. Feed
The bypass tray can hold 500 sheets of standard weight paper.
The bypass tray uses the standard FRR (Feed and Reverse Roller)
feed system. Handling Paper> Paper Feed Methods> Forward
and Reverse Roller (FRR)
When the job starts, the feed motor [A] switches on and rotates the
pick-up roller [B]. At the same time, the pick-up solenoid [not
shown] switches on and lowers the pick-up roller. The lift motor [C]
switches on to raise the stack until the top of the stack reaches the
correct feed level. At that time, the paper pushes the pick-up roller
down. When the actuator [not shown] goes out of the lift sensor [not
shown], the lift motor stops.
The pick-up roller picks up and feeds the first sheet to the feed
roller [D] and separation roller [E]. When the feed sensor [not
shown] detects the leading edge of the sheet, the pick-up solenoid
raises the pick-up roller and the feed roller feeds the sheet.
The bypass tray uses the standard FRR (Feed and Reverse Roller)
feed system. Handling Paper> Paper Feed Methods> Forward
and Reverse Roller (FRR)
When the job starts, the feed motor [A] switches on and rotates the
pick-up roller [B]. At the same time, the pick-up solenoid [not
shown] switches on and lowers the pick-up roller. The lift motor [C]
switches on to raise the stack until the top of the stack reaches the
correct feed level. At that time, the paper pushes the pick-up roller
down. When the actuator [not shown] goes out of the lift sensor [not
shown], the lift motor stops.
The pick-up roller picks up and feeds the first sheet to the feed
roller [D] and separation roller [E]. When the feed sensor [not
shown] detects the leading edge of the sheet, the pick-up solenoid
raises the pick-up roller and the feed roller feeds the sheet.
NOTE: Unlike the separation rollers in the LCT, the separation
roller always remains in contact with the feed roller above.
The transport motor [F] then feeds the paper into the bypass tray,
and the relay motor [G] feeds the paper out of the bypass tray, and
into the machine through the LCT.
and the relay motor [G] feeds the paper out of the bypass tray, and
into the machine through the LCT.
B. Tray lift
When the pick-up roller [B] lowers far enough to go into the lift sen-
sor, the lift motor switches on to raise the bottom plate until the
actuator goes out of the lift sensor again and switches off the lift
motor. This movement is repeated to maintain the correct height of
the stack for paper feed.
Actuator [H] is used by the height sensors, to detect the amount of
remaining paper.
sor, the lift motor switches on to raise the bottom plate until the
actuator goes out of the lift sensor again and switches off the lift
motor. This movement is repeated to maintain the correct height of
the stack for paper feed.
Actuator [H] is used by the height sensors, to detect the amount of
remaining paper.
SN1
SN2
Paper Remaining Status
OFF
OFF
100% (Full)
ON
OFF
0.9
ON
ON
0.5
OFF
ON
0.25
[A]
[B]
[D]
[E]
[F]
[C]
[G]
[A]
[B]
[C]
[E]
[F]
[G]
[D]
[H]
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