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MX-1800N  SIMULATION  7 – 1

MX-1800N

Service Manual

 

There are the following simulation functions for grasping the
machine operating conditions, troubleshooting, early detection of
trouble causes, speedy setting and adjustments, and improve-
ments in servicing.
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

transfer

The operating procedures and displays depend 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 user setup 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-1800N  SIMULATION  7 – 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 Program 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

message is

displayed by the

SYSTEM

SETTINGS key.

If there is no item.

MX-1800N  SIMULATION  7 – 3

1

1

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

Optical (Image scanning)

Operation test/check

2

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

Optical (Image scanning)

Operation test/check

5

Used to check the operations of the scanner unit.

Optical (Image scanning)

Operation test/check

2

1

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

RSPF

Operation test/check

2

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

RSPF

Operation test/check

3

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

RSPF

Operation test/check

3

2

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

Finisher

Operation test/check

3

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

Finisher

Operation test/check

10

Used to adjust the finisher.

Finisher

Adjustment

4

2

Used to check the operations of the sensors and detectors in the desk and the 
related circuit.

Desk

Operation test/check

3

Used to check the operations of the loads in the desk and the related circuit.

Desk

Operation test/check

5

Used to check the operations of the clutches and the related circuits.

Desk

Operation test/check

5

1

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

Operation panel

Operation test/check

2

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

Fusing

Operation test/check

3

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

Optical (Image scanning)

Operation test/check

4

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

Process

Operation test/check

6

1

Used to check the operations of the paper transport system, the transfer system, 
the fusing system (clutches and solenoids) and the control circuits.

Paper transport section 
(Transport, paper exit)

Operation test/check

2

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

Other

Operation test/check

3

Used to check the operations of the primary transfer unit and the related circuit.

Process (Transfer)

Operation test/check

7

1

Used to set the operating conditions of aging.

Other

Setting

6

Used to set the intermittent aging cycle.

Other

Setting

8

Used to display the warm-up time.

Fusing

Operation display

9

Used to check printing in the color mode. 

—

Operation test/check

8

1

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

Process (Photoconductor/
Developing/Transfer/
Cleaning)

Operation test/Check/
Adjustment

2

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

Process (Photoconductor/
Developing/Transfer/
Cleaning)

Operation test/Check/
Adjustment

6

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

Process (Photoconductor/
Developing/Transfer/
Cleaning)/Transfer

Operation test/Check/
Adjustment

9

2

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

Duplex

Operation test/check

3

Used to check the operations of the loads in the duplex section and the control 
circuits. 

Duplex

Operation test/check

10

1

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

Process (Developing)

Operation test/check

13

--

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

FAX

Clear/cancel (Trouble etc.)

14

--

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

—

Clear/cancel (Trouble etc.)

16

--

Used to cancel the self-diag U2 trouble.

MFPcnt PWB / PCU PWB 
/ SCU PWB

Clear/cancel (Trouble etc.)

17

--

Used to cancel the self-diag PF.

Communication unit (RIC/
MODEM)

Clear/cancel (Trouble etc.)

21

1

Used to set the maintenance cycle.

—

Setting

22

1

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

—

Adjustment/Setup/Operation 
data check

2

Used to check the total numbers of misfeed and troubles. (When the number of 
total jam is considerably great, it is judged as necessary for repair.)

—

Adjustment/Setup/Operation 
data check

3

Used to check misfeed positions and the misfeed count of each position.

—

Adjustment/Setup/Operation 
data check

4

Used to check the trouble (self diag) history.

—

Adjustment/Setup/Operation 
data check

5

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

—

Others

6

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

—

Adjustment/Setup/Operation 
data check

8

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

—

Adjustment/Setup/Operation 
data check

9

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

Paper feed, ADU

Adjustment/Setup/Operation 
data check

10

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

—

Adjustment/Setup/Operation 
data check

MX-1800N  SIMULATION  7 – 4

22

11

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

FAX

Adjustment/Setup/Operation 
data check

12

Used to check the RSPF 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.)

RSPF

Adjustment/Setup/Operation 
data check

13

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

—

Adjustment/Setup/Operation 
data check

19

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

Scanner

Adjustment/Setup/Operation 
data check

90

Used to output the various set data lists. 

—

Adjustment/Setup/Operation 
data check

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.)

—

Adjustment/Setup/Operation 
data check

80

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

Paper feed,  transport

Operation test/Check

24

1

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

—

Data clear

2

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

—

Data clear

3

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

—

Data clear

4

Used to clear the maintenance counter, the printer counters of the transfer unit 
and the fusing unit. (After completion of maintenance, clear the counters.)

—

Data clear

5

Used to clear the developer counter. (After replacement of developer, clear the 
counter.)

—

Data clear

6

Used to clear the copy counter.

—

Data clear

7

Used to clear the OPC drum counter. (After replacement of the OPC drum, clear 
the counter.)

—

Data clear

9

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

—

Data clear

10

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

—

Data clear

15

Used to clear the counters related to the image send.

—

Data clear

30

Used to initialize the administrator password.

—

Data clear

31

Used to initialize the service mode password.

—

Clear

25

1

Used to check the operations of the developing section.

Process 
(Developing section)

Operation test/Check

2

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

Process (Photoconductor/
Developing/
Transfer/Cleaning)

Setting

26

1

Used to set the paper exit tray (MX-TRX1).

Paper exit

Setting

3

Used to set the specifications of the auditor.

Auditor

Setting

5

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

—

Setting

6

Used to set the specifications (paper, fixed magnification ratio, etc.) of the 
destination.

—

Setting

10

Used to set the trial mode of the network scanner.

—

Setting

18

Used to set the toner save mode.

—

Setting

30

Used to set allow/inhibit of HL slow-up control (CE mark support control).

—

Setting

35

Used to set the display mode of Sim22-4 trouble history when a same trouble 
occurred repeatedly, There are two mode display as one trouble and display as 
several series of troubles.

—

Setting

38

Used to set Continue/Stop of print when the developer life is reached.

Other

Setting

41

Used to set YES/NO of AMS setting in the center binding mode.

—

Setting

49

Used to set the copy speed mode.

—

Setting

50

Used to set functions.

—

Setting

52

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

—

Setting

53

Used to set YES/NO of the auto color calibration.

—

Setting

54

Used to set the printer calibration YES/NO.

Printer

Setting

65

Used to set the finisher alarm mode.

—

Setting

67

Used to set the summer time (switching timing to the summer time and the 
adjustment time (shift amount)) and the time zone (for switching to the summer 
time and the difference between the local time and GMT (UTC) for 
synchronization with the internet time server).

—

Setting

69

Used to set whether the toner preparation message and the toner near end 
message are displayed or not when the toner quantity reaches 25%.

Process

Setting

27

1

Used to set whether the detection of communication error with RIC (U7-00) is 
disabled or not.

Communication 
(RIC/MODEM)

Operation test/Check

12

Used to display the high-density, half-tone process control error history and the 
automatic register adjustment error history.

Process

Adjustment/Setup/Operation 
data output/Check (Display/Print)

13

Used to display the history of paper feed time between sensors.

—

Adjustment/Setup/Operation 
data output/Check (Display/Print)