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MX-M350/M450 N/U  SIMULATION  9 - 1

The simulation has the following functions to grasp the machine
operating status, identify the trouble position and causes in an ear-
lier stage, and make various setups and adjustments speedily for
improving the serviceability of the machine.

1) Various adjustments

2) Setup of specifications and functions

3) Canceling troubles

4) Operation check

5) Various counters check, setup, and clear

6) Machine operating status (operation history) data check, clear

7) Transfer of various data (adjustments, setup, operations,

counters)

The operating procedures and the displays differ depending on the
form 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

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 simulation
operation.

To cancel the current simulation mode or to change the main
code and the sub code, press the SYSTEM SETTINGS key.

∗

Canceling the simulation mode to return to the normal mode

1) Press CA key.

MX-M350/M450 N/U  SIMULATION  9 - 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.

he

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 ?

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.

MX-M350/M450 N/U  SIMULATION  9 - 3

Code

Function (Purpose)

Main

Sub

1

1

Used to check the operations of the scanner (read) 
unit and its control circuit.

2

Used to check the operation of sensor and 
detector in the scanning (read) section and the 
related circuit.

2

1

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

2

Used to check the operations of the sensors and 
detectors in the automatic document feeder unit 
and the related circuits.

3

Used to check the operations of the loads in the 
automatic document feeder unit and the control 
circuits.

3

2

Used to check the operation of sensor and 
detector in the finisher and the related circuit.

3

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

6

10

20

21

4

2

3

5

1

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

2

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

3

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

6

1

Used to check the operation of the paper transport 
system loads and the control circuit.

2

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

7

1

Used to set the operating conditions of aging.

6

Used to set the intermittent aging cycle.

8

Used to set the warm-up time display YES/NO.

8

1

Used to check and adjust the operations of the 
developing voltage of each color and the control 
circuit.

2

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

6

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

17

Used to check and adjust the operation of the 
transfer voltage and the related circuit. (Transfer 
belt cleaning mode)

9

1

Used to check and adjust the operation of the load 
(clutch/solenoid) in the duplex section and the 
control circuit.

2

Used to check the operations of the sensors and 
detectors in the duplex section and its control 
circuit.

10

1

Used to check the operations of the toner motor 
and the related circuit.

13

0

Used to cancel the self-diag "U1" trouble. (Only 
when FAX is installed.)

14

0

Used to cancel excluding the self-diag U1/LCC/U2/
PF troubles.

15

0

16

0

Used to cancel the self-diag U2 troubles.

17

0

Used to cancel the PF troubles (when the copy 
inhibit command from the host computer is 
received).

21

1

Used to set the maintenance cycle.

22

1

Used to check the print count value in each section 
and each operation mode. (Used to check the 
maintenance timing.)

2

Used to check the total numbers of misfeed and 
troubles. (When the number of misfeed is 
considerably great, it is judged as necessary for 
repair. The misfeed rate is obtained by dividing this 
count value with the total counter value.)

3

Used to check misfeed positions and the misfeed 
count of each position. (If the misfeed count is 
considerably great, it may be judged as necessary 
to repair.)

4

Used to check the trouble (self diag) history.

5

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

6

Used to output the list of the setting and 
adjustment data (simulations, FAX soft switch, 
counters).

7

Used to display the key operator code. (This 
simulation is used when the customer forgets the 
key operator code.)

8

Used to check the number of use of the finisher, 
the SPF, and the scan (reading) unit.

9

Used to check the number of use (print quantity) of 
each paper feed section.

10

Used to check the system configuration (option, 
internal hardware). 

11

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

12

Used to check the SPF misfeed positions and the 
number of misfeed at each position. (When the 
number of misfeed is considerably great, it can be 
judged as necessary for repair.)

13

Used to check the operating time of the process 
section (OPC drum, DV unit, toner bottle).

19

Used to check the values of the counters related to 
the scan mode and the Internet FAX mode.

30

OSA vendor ID display (Application 
Communication Module)

31

OSA vendor ID display (External account module)

23

2

Used to check the trouble history of paper jam and 
misfeed. (If the number of misfeed and troubles is 
considerably great, it may be judged as necessary 
to repair.)

80

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

24

1

Used to clear the misfeed counter, the misfeed 
history, the trouble counter, and the trouble history. 
(The counters are cleared after completion of 
maintenance.)

2

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

Code

Function (Purpose)

Main

Sub

MX-M350/M450 N/U  SIMULATION  9 - 4

24

3

Used to clear the number of use of the finisher, 
SPF, and the scan (reading) unit.

4

Used to reset the maintenance counter.

5

Used to reset the developer counter. (The 
developer counter of the DV unit which is installed 
is reset.)

6

Used to reset the copy counter.

7

Used to clear the OPC drum counter. (Perform this 
simulation when the OPC drum is replaced.)

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)

11

Used to reset the OPC drum rotation time, and the 
DV unit rotation time counter. The developer 
counter in the DV unit installed is reset.

15

Used to clear the counters related to the scan 
mode and the Internet FAX mode.

25

1

2

Used to make the initial setting of toner 
concentration when replacing developer.

26

3

Used to set the specifications of the auditor. 
Setting must be made according to the auditor use 
conditions.

5

Used to set the count mode of the total counter 
and the maintenance counter.

6

10

Used to set the network scanner trial mode.

18

Used to set YES/NO of toner save operation. (This 
function is valid only in Japan and UK versions. 
(Depends on the destination setting of SIM26-6.) 
For the other destinations, the same setting can be 
made by the user program P22.)

30

Used to set the operation mode conforming to the 
CE mark (Europe safety standards). (Conforming 
to soft start when driving the fusing heater lamp.)

35

Used to set whether the same continuous troubles 
are displayed as one trouble or the series of 
troubles with SIM 22-4 when the same troubles 
occur continuously.

38

Used to set CONTINUE/STOP of printing when 
maintenance timing is over and the count value 
reaches 110% of replacement timing (life). 

41

50

Black-White reverse YES/NO setting (Except for 
UK)

52

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

68

Used to set ENABLE/DISABLE of the CA key 
cancel function of print stop.

27

1

Used to set the specifications for operations in 
case of communication trouble between the host 
computer and MODEM (machine side). (When 
communication trouble occurs between the host 
computer MODEM and the machine, the self diag 
display (U7-00) is printed and setting for inhibition 
of print or not is made.)

5

Used to enter the machine tag No. (This function 
allows to check the tag No. of the machine with the 
host computer.)

Code

Function (Purpose)

Main

Sub

30

1

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

2

Used to check the operation of sensors and 
detectors in the paper feed section and the related 
circuits.

40

1

Used to check the operation of the manual feed 
tray paper size detector and the related circuit. 
(The operation of the manual feed tray paper size 
detector can be monitored with the LCD display.)

2

Used to adjust the manual paper feed tray paper 
width detector detection level.

7

Used to enter the manual paper feed tray paper 
width adjustment value.

11

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

12

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

41

1

Used to check the operation of the document size 
sensor and the related circuit. (The operation of 
the document size sensor can be monitored with 
the LCD display.)

2

Used to adjust the document size sensor sensing 
level.

3

Used to check the operation of the document size 
sensor and the related circuit. (The document size 
sensor output level can be monitored with the LCD 
display.)

43

1

Used to set the fusing temperature in each 
operation mode.

44

1

Used to set enable/disable of correction operations 
in the image forming (process) section.

4

Used to set the target image (reference) density 
level in the developing bias voltage correction.

9

Used to check the data related to the image 
forming section correction (process correction) 
result (corrected main charger grid voltage, the 
developing bias voltage, and the laser power 
voltage in each print mode). (This simulation 
allows to check that correction is performed 
normally or not.)

14

Used to check the output level of the temperature 
sensor and the humidity sensor.

16

Used to check the toner concentration control 
data.

46

2

Used to adjust the copy density in all the copy 
modes (Auto, Text, Text/Photo, and Photo mode).

9

Used to adjust the print density for each density 
level (display value) in the copy mode (binary - Text 
mode). An optional print density can be set for 
each density level (display value).

10

Used to adjust the print density for each density 
level (display value) in the copy mode (binary - 
Text/Photo mode). An optional print density can be 
set for each density level (display value).

11

Used to adjust the print density for each density 
level (display value) in the copy mode (binary - 
Photo mode). An optional print density can be set 
for each density level (display value).

12

Used to adjust the print density in the FAX mode 
(all modes).

13

Used to adjust the print density in the FAX mode 
(each normal mode). (Only when FAX is installed.)

14

Used to adjust the print density in the FAX mode 
(each fine mode). (Only when FAX is installed.)

Code

Function (Purpose)

Main

Sub