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Model
MX-FN12
Pages
40
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8.62 MB
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Service Manual
Brand
Device
Copying Equipment / Service Manual (Complete)
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mx-fn12.pdf
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Sharp MX-FN12 Service Manual ▷ View online

MX-FN12  EXTERNAL VIEW AND INTERNAL STRUCTURE  2 – 2
2. Detectors and rollers
Detectors
Rollers
Signal name
Name
Type
Function/Operation
NOTE
FAPHPS-F
Paper alignment plate home 
position detector F
Transmission type
Detects the home position of the paper alignment plate on the 
front side.
FAPHPS-R
Paper alignment plate home 
position detector R
Transmission type
Detects the home position of the paper alignment plate on the 
rear side.
FDRPS
Delivery roller position 
detector
Transmission type
Detects that the delivery roller is in the home position.
FDTLLS
Delivery tray lower limit 
detector
Transmission type
Detects the lower limit position of the paper delivery tray.
FDTULS
Delivery tray upper limit 
detector
Transmission type
Detects the upper limit of the paper delivery tray (movable 
section) to judge paper empty in the tray.
FPLD
Paper level detector
Transmission type
Detects the paper height position of the paper delivery tray 
(movable section).
FPPD1
Paper pass detector
Transmission type
Detects paper entry in the finisher.
FPRD-C
Paper rear edge detector C
Transmission type
Detects that the rear edge of paper transported to the 
compiler reaches the rear edge of the compiler.
FPRD-F
Paper rear edge detector F
Transmission type
FPRD-R
Paper rear edge detector R
Transmission type
FSED
Staple empty detector
Detects empty of spare staples in the stapler.
FSLD
Staple lead detector
Detects the staple position of the stapler.
FSHPS
Staple home position sensor
Detects the standby position of the stapler.
FSTPD
Staple tray paper detector
Transmission type
Detects paper presence in the staple compiler.
No.
Name
Function/Operation
NOTE
1
Paper delivery roller
Discharges paper from the staple compiler to the paper delivery tray.
2
Take-up roller
Transports paper which is transported into the staple compiler to the rear edge plate.
3
Paper entry roller (Idle)
Applies a pressure to paper and the transport roller to give a transport power of the 
transport roller to paper.
4
Paper entry roller
Transports paper (which is transported from the copier) to the staple compiler.
5
Rear edge take-up roller
Drives paper (which is transported to the staple compiler) to the rear edge plate.
6
Paper delivery roller (Idle)
Gives a transport power of the transport roller to paper.
1
2
3
4 5
6
FDRPS
FPPD1
FPRD-F
FSHPS
FSLD
FSED
FPRD-C
FPRD-R
FSTPD
FPLD
FAPHPS-F
FAPHPS-R
FDTULS
FDTLLS
MX-FN12  EXTERNAL VIEW AND INTERNAL STRUCTURE  2 – 3
3. Motors, Solenoids, Fans, Gate, PWB, Switch
Motors
Solenoids
Fans
Gate
PWB
Switch
Signal name
Name
Type
Function/Operation
 NOTE  
FDRLM
Delivery roller lift motor
Stepping motor
Moves the paper delivery roller up and down.
FPAM-F
Paper alignment motor F
Stepping motor
Drives the paper alignment plate F.
FPAM-R
Paper alignment motor R
Stepping motor
Drives the paper alignment plate R.
FPDM
Paper delivery motor
Stepping motor
Drives the paper delivery roller and the take-up roller. Also 
moves the take-up roller up and down.
FPTM
Paper transport motor
Stepping motor
Drives the paper entry roller and the rear edge take-up roller.
FSM
Stalpe motor
Drives the staple unit.
FTLM
Tray lift motor
DC brush motor
Drives the paper delivery tray (movable section).
Signal name
Name
Type
Function/Operation
 NOTE  
FARLS
Rear edge take-up roller 
solenoid
Electromagnetic solenoid
Controls up-down movement of the rear edge take-up roller. 
FPGS
Paper pass gate solenoid
Electromagnetic solenoid
Drives the select gate of the paper transport path of paper 
transported to the switch-back section and paper 
transported to the paper delivery tray. 
FPS
Paddle solenoid
Electromagnetic solenoid
Controls ON/OFF of the paddler rotation.
No.
Name
Function/Operation
NOTE
FBCF
Control PWB cooling fan
Cools the control PWB.
FSCF
Stapler cooling fan
Cools the staple unit.
No.
Name
Function/Operation
NOTE
1
Paper entry gate
Selects the paper transport path to the switch back section and to the paper delivery tray.
No.
Name
Function/Operation
NOTE
2
Control PWB
Controls the operation of the finisher.
No.
Name
Function/Operation
NOTE
3
Safety switch
Detects open/close of the front cover to turn ON/OFF the motor power.
FBCF
FSCF
FSM
FPTM
FPAM-F
FPAM-R
FARLS
FPGS
FPS
FPDM
FDRLM
FTLM
1
2
3
MX-FN12  ADJUSTMENTS  3 – 1
MX-FN12
Service Manual
 
[3] ADJUSTMENTS
1. General
Perform an adjustments when a problem occurs.
If the adjustment value is changed when there is no trouble in the
machine, a trouble may be generated such as improper alignment
of paper, paper exit jam, attachment of roller marks on paper, etc.
2. List of adjustment items
3. Details of adjustment and setting
 
ADJ 1
Paper alignment width 
adjustment
This adjustment is executed when a trouble occurs in paper align-
ment. 
1)
Execute Sim3-10.
2)
Select "A: FPAM ADJUST".
• 4.3 Inch LCD model
• 7.0/8.5 Inch LCD model
3)
Enter the set value with 10-key. (Press [C] key to clear the
entered values.)
Initial value: 50
When the adjustment value is increased by 1, the alignment
plate F/R width is narrowed by 0.419mm in alignment opera-
tion.
When the adjustment value is decreased by 1, the alignment
plate F/R width is widened by 0.419mm in alignment operation.
The alignment plate F and the alignment plate R cannot be
adjusted separately. The shift amount on the F side and that
on the R side are alternatively corrected everytime the adjust-
ment value is increased by 1. (Correction with 51 for the F
side, and 52 for the R side. ... 59 for the F aide, and 60 for the
R side. Similar when the set value is decreased.)
4)
Press [OK] key to save the set value. (For the 4.3 Inch LCD
model, press the OSA shortcut key.)
5)
After completion of the adjustment, make staple copies.
Alignment specification: Within 2.5mm
 
ADJ 2
Paper delivery roller 
descending position 
adjustment
This adjustment is executed when a paper exit jam occurs or when
roller marks of the paper delivery roller are attached to paper.
1)
Execute Sim3-10.
2)
Select "B: FDRLM ADJUST". 
• 4.3 Inch LCD model
• 7.0/8.5 Inch LCD model
3)
Enter the set value with 10 key. (Press [C] key to clear the
entered values.)
Initial value: 50
When the adjustment value is increased by 1, the shift amount
of the paper delivery roller is changed by 0.11mm toward the
pressure increasing side (*1).
When the adjustment value is decreased by 1, the shift
amount of the paper delivery roller is changed by 0.11mm
toward the pressure decreasing side (*1).
*1: The pressure increasing side means the direction to 
increase the paper delivery roller pressure onto paper, and 
the pressure decrease side means the direction to 
decrease the paper delivery roller pressure onto paper. 
4)
Press [OK] key to save the set value. 
(For the 4.3 Inch LCD model, press the OSA shortcut key.)
Job No
Adjustment items
Simulation  
to be used
ADJ1
Paper alignment width adjustment
3-10
ADJ2
Paper delivery roller descending position 
adjustment
3-10
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MX-FN12  OPERATIONAL DESCRIPTIONS  4 – 1
MX-FN12
Service Manual
 
[4] OPERATIONAL DESCRIPTIONS
1. General
This chapter describes the operations of the finisher.
The major operation modes are as follows:
• Non-sort mode
• Offset mode
• Staple mode
In this chapter, the basic operations in the above three modes are described.
2. Outline of the transport path
The outline of the transport path is described below.
3. Non-sort mode
When the operation mode command is received from the copier,
the finisher starts the transport operation.
A. Reception of paper discharged from the main 
unit
1)
The rear edge take-up roller solenoid (FARLS) is turned ON,
and the rear edge take-up roller is lifted.
2)
The paper transport motor (FPTM) is driven at the same speed
as the paper delivery speed of the main unit to receive deliv-
ered paper from the main unit.
3)
When the paper rear edge passes the delivery roller of the
main unit, the paper transport motor (FPTM) is accelerated to
500mm/sec. At the same time, the paper alignment motor F
(FPAM-F) and the paper alignment motor R (FPAM-R) are
driven to put the paper alignment plate in the standby mode
outside of the paper width. In addition, the rear edge take-up
roller solenoid (FARLS) is turned OFF to lower the rear edge
take-up roller.
B. Paper alignment
1)
After the paper rear edge passes the paper pass roller, the
paper delivery motor (FPDM) is driven in the alignment direc-
tion at 500mm/sec, and the take-up roller is rotated and low-
ered to take up the paper rear edge to the rear edge plate.
2)
When the paper rear edge detector F (FPRD-F) is turned ON,
the paper delivery motor (FPDM) is driven in the paper delivery
direction at 500mm/sec, and the take-up roller is lifted and the
paper delivery roller is rotated. At the same time, the delivery
roller lift motor (FDRLM) is driven downward to lower the paper
delivery roller to the standby position.
No.
Name
No.
Name
1
Delivery movable tray
7
Paper pass detector
2
Delivery paddler
8
Stapler
3
Delivery roller
9
Rear edge plate
4
Take-up roller
10
Paper rear edge detector (F, C, R)
5
Paper alignment plate  (F, R)
11
Rear edge take-up roller
6
Paper pass roller
12
Paper level actuator
1
2
3
4
5
7
6
12
9
8
10
11
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