DOWNLOAD Sharp MX-FN23 Service Manual ↓ Size: 6.27 MB | Pages: 32 in PDF or view online for FREE

MX-FN23  ADJUSTMENTS  4 – 1

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.

 

This adjustment is executed when a trouble occurs in paper align-
ment. 
1) Execute Sim3-10.
2) Select "1: FPAM ADJUST".

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.) When, how-
ever, the alignment plate lower cannot be adjusted due to the
mechanism structure, adjust only on the R side without cor-
recting both of the F and the R side.

4) Press [OK] key to save the set value.
5) After completion of the adjustment, make staple copies.

Alignment specification: Within 2.5mm

 

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 "2: FDRLM ADJUST".

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 0.13mm 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 0.13mm
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.

ADJ1

Paper alignment width adjustment

3-10

ADJ2

Paper delivery roller descending position 
adjustment

3-10

SIMULATION 3-10

FINISHER SETTING. SELECT 1-2, AND PRESS START.

1: FPAM ADJUST       

 50

  1

2: FDRLM ADJUST 

 50

SIMULATION 3-10

FINISHER SETTING. INPUT VALUE 40-60, AND PRESS 

START.

1: FPAM ADJUST

50

Select 1 and 
press [START] key.

Press [CUSTOM SETTINGS] key.

SIMULATION 3-10

FINISHER SETTING. SELECT 1-2, AND PRESS START.

1: FPAM ADJUST       

 50

  2

2: FDRLM ADJUST 

 50

SIMULATION 3-10

FINISHER SETTING. INPUT VALUE 40-60, AND PRESS 

START.

2: FDRLM ADJUST 

50

Select 2 and 
press [START] key.

Press [CUSTOM SETTINGS] key.

MX-FN23  TROUBLE CODE  5 – 1

 

 

 

 

F1

00

Finisher communication trouble

FIN

When communicating

Turn ON/OFF the power.

03

Finisher delivery roller lift motor trouble

FIN

When the roller is operating

Check the connection state.

10

Finisher staple motor trouble

FIN

When the staple is operating

Check the connection state.

15

Finisher tray lift motor trouble

FIN

When the tray is operating

Check the connection state.

19

Finisher paper alignment motor F trouble

FIN

When the alignment plate is operating

Check the connection state.

20

Finisher paper alignment motor R trouble

FIN

When the alignment plate is operating

Check the connection state.

29

Finisher cooling fan trouble

FIN

When paper is delivered.

Check the paper exit, etc.

37

Finisher RAM data trouble

FIN

When the RAM is accessed.

Check the connection state.

50

Finisher incompatible trouble

FIN

When the power is turned ON

Check the connection state.

Phenomenon

Communication error with the finisher. 
Communication line test error after turning ON the 
power or canceling the exclusive simulation.

Case 1

Cause

Connection trouble or disconnection of the connector 
and the harness.

Check & 
Remedy

Check the connector and the harness in the 
communication line.
Connect the connector properly. Replace the 
harness.

Case 2

Cause

Finisher control PWB trouble. Control PWB (PCU) 
trouble.

Check & 
Remedy

Replace the finisher control PWB or the control PWB 
(PCU).

Case 3

Cause

Malfunctions caused by noises.

Check & 
Remedy

Canceled by turning OFF/ON the power.

Phenomenon

Up/down operation trouble of the paper delivery 
roller.

Case 1

Cause

Connection trouble or disconnection of the connector 
and the harness of the motor

Check & 
Remedy

Check the connection of the connector and the 
harness in the motor line with the finisher control 
PWB.
Connect the connector properly. Replace the 
harness.

Case 2

Cause

Delivery roller position sensor (FDRPS) trouble.

Check & 
Remedy

Check to confirm that the FDRPS turns ON/OFF with 
SIM3-2.
If it does not turn ON/OFF, check the connection of 
the connector and the harness of the sensor.
Replace the sensor.

Case 3

Cause

Motor lock, an overcurrent to the motor, intrusion of 
foreign material.

Check & 
Remedy

Select the FDRLM with SIM3-3 to check the 
operation of the single unit.
Check to confirm that there is no foreign material in 
the drive system.

Case 4

Cause

Finisher control PWB trouble. Motor trouble

Check & 
Remedy

Replace the finisher control PWB or the motor.

Phenomenon

Staple motor operation trouble

Case 1

Cause

Connection trouble or disconnection of the connector 
and the harness of the staple unit.

Check & 
Remedy

Check the connection of the connector and the 
harness between the finisher control PWB and the 
staple unit line.
Connect the connector properly. Replace the 
harness.

Case 2

Cause

Motor lock, an overcurrent to the motor, intrusion of 
foreign material.

Check & 
Remedy

Select the FSM with SIM3-3 to check the operation of 
the single unit.
Check to confirm that there is no foreign material in 
the staple unit.

Case 3

Cause

Finisher control PWB trouble. Staple unit trouble.

Check & 
Remedy

Replace the finisher control PWB or the staple unit.

Phenomenon

Up/down operation trouble of the paper delivery tray

Case 1

Cause

Connection trouble or disconnection of the connector 
and the harness of the motor

Check & 
Remedy

Check the connection of the connector and the 
harness in the motor line with the finisher control 
PWB.
Connect the connector properly. Replace the 
harness.

Case 2

Cause

Paper level detector (FPLD) trouble.

Check & 
Remedy

Check to confirm that the FPLD turns ON/OFF with 
SIM3-2.
If it does not turn ON/OFF, check the connection of 
the connector and the harness of the sensor.
Replace the sensor.

Case 3

Cause

Delivery tray lower limt sensor (FDTLLS) trouble.

Check & 
Remedy

Check to confirm that the FDTLLS turns ON/OFF 
with SIM3-2.
If it does not turn ON/OFF, check the connection of 
the connector and the harness of the sensor.
Replace the sensor.

Case 4

Cause

Motor lock, an overcurrent to the motor, intrusion of 
foreign material.

Check & 
Remedy

Select the FTLM with SIM3-3 to check the operation 
of the single unit.
Check to confirm that there is no foreign material in 
the drive system.

Case 5

Cause

Finisher control PWB trouble. Motor trouble

Check & 
Remedy

Replace the finisher control PWB or the motor.

MX-FN23  TROUBLE CODE  5 – 2

 

 

 

  

Phenomenon

Operation trouble of the paper alignment plate F

Case 1

Cause

Connection trouble or disconnection of the connector 
and the harness of the motor

Check & 
Remedy

Check the connection of the connector and the 
harness in the motor line with the finisher control 
PWB.
Connect the connector properly. Replace the 
harness.

Case 2

Cause

Paper alignment plate home position sensor F 
(FAPHPS-F) trouble.

Check & 
Remedy

Check to confirm that the FAPHPS-F turns ON/OFF 
with SIM3-2.
If it does not turn ON/OFF, check the connection of 
the connector and the harness of the sensor.
Replace the sensor.

Case 3

Cause

Motor lock, an overcurrent to the motor, intrusion of 
foreign material.

Check & 
Remedy

Select the FPAM-F with SIM3-3 to check the 
operation of the single unit.
Check to confirm that there is no foreign material in 
the drive section and the alignment plate.

Case 4

Cause

Finisher control PWB trouble. Motor trouble

Check & 
Remedy

Replace the finisher control PWB or the motor.

Phenomenon

Operation trouble of the paper alignment plate R

Case 1

Cause

Connection trouble or disconnection of the connector 
and the harness of the motor

Check & 
Remedy

Check the connection of the connector and the 
harness in the motor line with the finisher control 
PWB.
Connect the connector properly. Replace the 
harness.

Case 2

Cause

Paper alignment plate home position sensor R 
(FAPHPS-R) trouble.

Check & 
Remedy

Check to confirm that the FAPHPS-R turns ON/OFF 
with SIM3-2.
If it does not turn ON/OFF, check the connection of 
the connector and the harness of the sensor.
Replace the sensor.

Case 3

Cause

Motor lock, an overcurrent to the motor, intrusion of 
foreign material.

Check & 
Remedy

Select the FPAM-R with SIM3-3 to check the 
operation of the single unit.
Check to confirm that there is no foreign material in 
the drive section and the alignment plate.

Case 4

Cause

Finisher control PWB trouble. Motor trouble

Check & 
Remedy

Replace the finisher control PWB or the motor.

Phenomenon

When the finisher cooling fan is operating, the lock 
signal is not canceled in a certain time.

Case 1

Cause

Improper connection or disconnection of the fan 
connector and harness.

Check & 
Remedy

Check the connector and harness of the finisher 
control PWB and the fan line.
Connect the connector securely. Replace the 
harness.

Case 2

Cause

Motor lock, an over current to the motor, intrusion of 
a foreign material.

Check & 
Remedy

Select the FCF with SIM03-03 and check the 
operation of the single unit.

Case 3

Cause

Finisher control PWB trouble, fan trouble.

Check & 
Remedy

Replace the finisher control PWB or the staple unit.

Phenomenon

Backup RAM operation trouble

Case 1

Cause

Finisher control PWB trouble. EEPROM trouble.

Check & 
Remedy

Replace the finisher control PWB or the EEPROM.

Phenomenon

Connection of a finisher incompatible with the 
machine is detected.

Case 1

Cause

Connection of a finisher incompatible with the 
machine is detected.

Check & 
Remedy

Connect the MX-FN23 to the machine.

MX-FN23  OPERATIONAL DESCRIPTIONS  6 – 1

This chapter describes the operations of the finisher.
The major operation modes are as follows:
• Offset mode
• Staple mode
In this chapter, the basic operations in the above two modes are described.

The outline of the transport path is described below.

When the operation mode command is received from the copier,
the finisher starts the transport operation.

1) The paper delivery motor (FPDM) is driven in the paper deliv-

ery direction to lift the take-up roller. When a flapper solenoid
request (finisher paper pass) is received, the paper gate sole-
noid (FPGS) is turned ON to switch the paper pass gate to the
finisher side.

2)

When paper enters the finisher, the paper transport motor
(FPTM) is driven at the machine paper delivery speed to
receive paper delivery from the machine.

3)

When the rear edge of paper passes the paper delivery roller
of the machine, the paper transport motor (FPTM) is acceler-
ated to 400mm/sec. After a lapse of a certain time, the paper
alignment motor F (FPAM-F) and the paper alignment motor R
(FPAM-R) are driven to make the paper alignment plate stand
by outside of paper. Then, the alignment roller lift solenoid
(FARLS) is turned ON to lift the rear edge take-up roller.

1

Delivery movable tray

8

Paper pass detector

2

Paper delivery tray paper detector

9

Paper pass gate

3

Delivery paddler

10

Stapler

4

Paper delivery roller

11

Rear edge plate

5

Take-up roller

12

Paper rear edge detector

6

Paper alignment plate (F, R)

13

Rear edge take-up roller

7

Paper pass roller

14

Paper level actuator

4

5

7

10

3

1

6

11

12

13

14

2

8

9