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MX-M753N  SIMULATION  6 – 1

MX-M753N

Service Manual

 

The simulation mode has the following functions, to display the
machine operating status, identify the trouble position and causes
in an earlier stage, and make various setups and adjustments
speedily for improving the serviceability of the machine.
1)

Various adjustments

2)

Setting of the specifications and functions

3)

Canceling troubles

4)

Operation check

5)

Counters check, setting, clear

6)

Machine operating conditions (operation hysteresis), data
check, clear.

7)

Various (adjustments, setting, operation, counters, etc.) data
transport.

The operating procedures and displays depend on the design of
the operation panel of the machine.

* Entering the simulation mode
1)

Copy mode key ON 

 Program key ON  Asterisk (*) key ON

 CLEAR key ON  Asterisk (*) key ON  Ready for input of
a main code of simulation

2)

Entering a main code with the 10-key 

 START key ON.

Or select a main code with the SIM key on the touch panel.

3)

Entering a sub code with the 10-key 

 START key ON.

4)

Select an item with the scroll key and the item key.

5)

The machine enters the mode corresponding to the selected
item. Press [START] key or [EXECUTE] key to start the simu-
lation operation.
When canceling the current simulation mode to change the
main code and the sub code, press [SYSTEM SETTINGS] key.

* Canceling the simulation mode to return to the normal mode
1)

Press [CA] key.

(Note for the simulation mode)
Do not turn OFF the power switch on the operation panel when the
machine is in the simulation mode. If the power switch should be
turned OFF in the simulation mode, a malfunction may be resulted.
In this case, turn OFF/ON the main power source.

MX-M753N  SIMULATION  6 – 2

YES

NO

NO

YES

YES

YES

NO

NO

NO

YES

NO

YES

YES

NO

NO

YES

YES

NO

Standby for entry of SIM

sub code

Enter SIM sub code with

the 10-key.

Press the START button.

The display is made according

to the selected mode and the item.

START (Copy mode)

Press the Program key.

Press the asterisk (*) key.

Press the clear key.

Press the asterisk (*) key.

Standby for entry of

SIM code.

Enter the main code of

SIM with the 10-key.

The main code of SIM

is displayed.

Press the START button.

Is there a sub code ?

Select the mode and the

item with the scroll key

and the item key.

Operation check ?

Operating conditions

check ?

Data clear ?

Adjustments

or setting (counter data

change) ?

Do you

want to change the

content ?

Enter the new setting and

adjustment values.

Press the SYSTEM

SETTINGS key

Press the SYSTEM

SETTINGS key

Press the EXECUTE button

and OK button.

Operation is made according

to the selected mode and item.

Press the EXECUTE button

and OK button.

Press the EXECUTE button

and OK button.

The display is made according to

the selected some and the item.

Press the EXECUTE button

and OK button.

Is it the same

simulation main

code?

Do you want

to perform another

simulation ?

Do you

want to end the

simulation ?

The changed content

is stored.

The simulation mode

is canceled.

Press the clear all key.

Operation is made according

to the selected mode and the item.

(Other modes)

The selected mode and

the item are cleared.

<Exclusion type>

You have to exit

simulation mode

before entering into

this mode for self

printing type.

In the power OFF/ON type

simulation, OFF/ON

messages is

displayed by the

SYSTEM

SETTINGS key.

If there is no item.

MX-M753N  SIMULATION  6 – 3

1

1

Used to check the operation of the scanner (reading) unit and the control circuit.

Scanner (reading)

2

Used to check the sensors in the scanner (reading) section and the related circuits.

Scanner (reading)

5

Used to check the operation of the scanner (reading) unit and the control circuit.

Scanner (reading)

2

1

Used to check the operations of the automatic document feed unit and the control circuit.

Automatic document feeder

2

Used to check the operations of the sensors and the detectors in the document feed unit section and 
the control circuits.

Automatic document feeder

3

Used to check the operations of the loads in the automatic document feed unit and the control circuit.

Automatic document feeder

3

2

Used to check the operations of the sensors and the detectors in the finisher and the control circuit.

Finisher

3

Used to check the operation of the load in the finisher and the control circuit.

Finisher

10

Used to adjust the finisher.

Finisher

30

Used to check the operations of the sensors and detectors in the inserter and the control circuits.

Inserter

31

Used to check the operations of the loads in the inserter and the control circuit.

Inserter

32

Used to enter the adjustment value of the inserter paper width detection level.

Inserter

4

2

Used to check the large capacity tray (LCC) sensors and detectors and their control circuits.

Large capacity tray (LCC)

3

Used to check the large capacity tray (LCC) loads and their control circuits.

Large capacity tray (LCC)

5

Used to check the operations of the LCC paper transport clutch (LTRC).

Large capacity tray (LCC)

5

1

Used to check the operation of the display, LCD in the operation panel, and control circuit.

Operation panel

2

Used to check the operation of the heater lamp and the control circuit.

Fusing

3

Used to check the operation of the scanner lamp and the control circuit.

Scanner (reading)

4

Used to check the operation of the discharge lamp and the control circuit.

Process

6

1

Used to check the operations of the load in the paper transport system (clutches and solenoids) and 
the control circuits.

Paper transport/paper exit

2

Used to check the operations of each fan and its control circuit.

Other

3

Used to check the operations of the transfer unit and the control circuit. 

Process (Transfer)

7

1

Used to set the operating conditions of aging.

Other

6

Used to set the operating intermittent aging cycle.

8

Used to display the warm-up time.

12

The document reading number of sheets setting (for aging operation)

Automatic document feeder

8

1

Used to check and adjust the operations of the developing voltage in each print mode and the control 
circuit.

Process (Developing)

2

Used to check and adjust the operation of the main charger grid voltage in each printer mode and the 
control circuit.

Process (Charging)

6

Used to check and adjust the operation of the transport voltage and the control circuit.

Process (Transfer)

17

Used to check and adjust the transfer electric cleaning output and the control circuit operations.

Process (Transfer)

18

Used to check and adjust the transfer cleaning roller output and the control circuit operations.

Process (Transfer)

20

Used to check and adjust the output between transfer papers and the control circuit operations.

Process (Transfer)

9

2

Used to check the operation of the sensors and detectors in the switchback section (duplex section) 
and the control circuit.

Duplex

3

Used to check the operations of the load in the paper reverse section (duplex section) and its control 
circuit.

Duplex

10

1

Used to check the operations of the toner supply mechanism (toner clutch) and the related circuit.

Process (Developing)

2

Used to check the operations of the toner remaining quantity sensor and the related circuits.

Process (Developing)

13

-

Used to cancel the self-diag "U1" trouble.

14

-

Used to cancel the self-diag "H3, H4, H5" trouble.

15

-

Used to cancel the self-diag "F3-12, F3-22, U6-09" trouble.

LCC

16

-

Used to cancel the self-diag "U2" trouble.

MFP PWB / PCU PWB / SCU PWB

17

-

Used to cancel the self-diag "PF" trouble.

21

1

Used to set the maintenance cycle.

22

1

Used to display the print count value of each section and the operation mode.

2

Used to display the number of total mis-feed and the number of troubles.

3

Used to display the mis-feed position and the number of mis-feed at the position.

4

Used to display the trouble (self diag) history.

5

Used to display the ROM version of each unit (section).

Firmware

6

Used to print information on various settings, adjustments, counters, controls, and versions.

8

Used to display the number of operations (the counter value) of the finisher, the DSPF, and scanning 
(reading).

9

Used to display the print quantity of each paper feed section.

10

Used to display the system configuration (options and internal hardware).

11

Used to display the use frequency of send/receive of FAX. (Only when FAX is installed.)

FAX

12

Used to display the mis-feed position of the DSPF and the number of mis-feed at the position.

Automatic document feeder

13

Used to display the use quantity of the process section (OPC drum, DV unit, toner cartridge).

Process

19

Used to display various counter values related to scan - image send.

90

Used to output the various set data lists.

23

2

Used to output the trouble history list of paper jam and mis-feed.

80

Used to output the operation data of paper feed and paper transport in the paper feed/transport 
section.

Paper feed, Paper transport

MX-M753N  SIMULATION  6 – 4

24

1

Used to clear the jam counter, and the trouble counter.

2

Used to clear the number of use (the number of prints) of each paper feed section.

Paper feed, paper reverse/transport

3

Used to clear the finisher, DSPF, and the scan (reading) unit counter.

4

Used to clear the maintenance counter, the printer counters of the transfer unit and the fusing unit.

5

Used to clear the developer counter.

6

Used to clear the copy counter.

7

Used to clear the OPC drum counter.

9

Used clear the printer mode print counter and the self print mode print counter.

10

Used to clear the FAX counter. (Only when FAX is installed)

15

Used to clear the counters related to the scan mode and the image send.

30

Used to initialize the administrator password.

31

Used to initialize the service mode (Web page) password.

25

1

Used to check the operations of the developing section, and to display the toner density detection 
level.

Process (Developing section)

2

Used to make the initial setting of toner density when replacing developer. (Automatic adjustment)

Process (Photoconductor/Developing/
Transfer/Cleaning)

26

2

Used to set the paper type and the weight type.

Paper feed

3

Used to set the specifications of the auditor. (Japan only)

Auditor

5

Used to set the count mode in A3 (11" x 17") print.

6

Used to set the specifications of the destination.

10

Used to set the trial mode of the network scanner.

18

Used to set Disable/Enable of the toner save mode operation. (For the Japan and the UK versions.)

30

Used to set the operation mode corresponding to the CE mark (Europe safety standards).

35

Used to set the trouble history display mode.

38

Used to set "Print continue" or "Print stop" when the maintenance timing is reached or the consumable 
part life is over.

41

Used to set Enable/Disable of the magnification ratio automatic select function (AMS) in the center 
binding mode.

49

Used to set the print speed of postcards mode.

50

Used to set the operation specifications and functions.

52

Used to set whether non-printed paper (insertion paper, cover paper) is counted up or not.

53

Used to set Inhibit/Allow of the user auto calibration (gradation, density adjustment) in the copy mode.

54

Used to set Inhibit/Allow of the user auto calibration (gradation, density adjustment) in the print mode.

65

Used to set the limit of the staple process.

69

Used to set the operating conditions for toner near end.

73

Used to adjust the image loss (shade removal amount) in the poster, the continuous enlargement copy, 
the card scan, and the A3 wide copy mode.

74

Used to set the OSA trial mode.

78

Used to set the password of the remote operation panel mode.

27

1

Used to set non-detection of communication error (U7-00) with RIC. (FSS function)

2

Used to set the sender's registration number and the HOST server telephone number. (FSS function)

4

Used to set the initial call and toner order auto send. (FSS function)

5

Used to set the machine tag No. (FSS function)

Communication (RIC/MODEM)

6

Used to set of the manual service call. (FSS function)

7

Used to set of the enable, alert call out. (FSS function)

9

Used to set the paper transport time recording YES/NO threshold value and shading gain adjustment 
retry number. (FSS function)

10

Used to clear the trouble prediction history information. (FSS function)

11

Used to check the serial communication retry number and the scanner gain adjustment retry number 
history. (FSS function)

12

Used to check the high-density and the half-tone process control error history. (FSS Function)

13

Used to check the history of paper transport time between sensors. (FSS function)

14

Used to set the FSS function connection test mode.

30

1

Used to check the operations of the sensors and the detectors in other than the paper feed section and 
the control circuits.

2

Used to check the operations of the sensors and the detectors in the paper feed section and the control 
circuits.

33

1

Used to check the operations of the card reader sensor and the control circuit.

2

Used to delete the ID (IDM) information of card.

40

2

Manual paper feed tray paper width sensor adjustment.

Paper feed

7

Used to set the adjustment value of the manual paper feed tray paper width sensor.

Paper feed

12

Used to adjust the multi-purpose tray width detection level.

Paper feed

41

1

Used to check the operations of the document size sensor and the control circuit.

2

Used to adjust the document size sensor detection level.

3

Used to check the operations of the document size sensor and the control circuit.