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MX-B381/B401  ADJUSTMENTS  4 – 39

6)

Set the adjustment pattern face up in the RSPF.

* By pressing the [REPRINT] button, you can return to the

cassette selection screen and have the machine self-print
RSPF adjustment patterns again.

7)

Press the [EXECUTE] button.
The machine starts reading RSPF adjustment patterns (for the
front side).
* After completion of the adjustment, the screen is shifted to

the RSPF adjustment pattern (back surface) scan start
screen.

• RSPF original leading edge adjustment (front side)
• RSPF original off-center adjustment (front side)
• RSPF original sub-scan magnification adjustment (front

side)

8)

Set the adjustment pattern face down in the RSPF.

* By pressing the [REPRINT] button, you can return to the

cassette selection screen and have the machine self-print
RSPF adjustment patterns again.

9)

Press the [EXECUTE] button.
The machine starts loading RSPF adjustment patterns (for the
back side).
* After completion of the adjustment, the screen is shifted to

the adjustment result display screen.

• RSPF original leading edge adjustment (back side)
• RSPF original off-center adjustment (back side)
• RSPF original sub-scan magnification adjustment (back

side)

10) Press [OK] key.

This screen shows the current values along with the previous
values in parentheses.
* By pressing the [REPRINT] button, you can return to the

cassette selection screen and have the machine self-print
RSPF adjustment patterns (for the front and back sides)
again.

* To have the machine start re-reading the RSPF adjustment

patterns (front and back sides), press the [RESCAN] button.

* To return to the top menu without saving the adjustment val-

ues into EEPROM and RAM, press the [RETRY] button.

* To display the data used for adjustment, press the [DATA]

button.

* To save the adjustment values into EEPROM and RAM and

return to the top menu, press the [OK] button.

* To return to the result screen, press the [BACK] button.

 

Normally there is no need to perform this adjustment. In the follow-
ing cases, perform this adjustment.
* When a paper jam occurs in the fusing section.
* When wrinkles are made on paper in the fusing section.
* When an image deflection or an image blur is generated in the

paper rear edge section.

1)

Loosen the fixing screw of the fusing paper guide so that the
paper guide can be moved freely in the directions of A and B.

2)

Use the fusing paper guide position scale as the reference to
shift the paper guide in the arrow direction A or B.

The standard fixing position is the bottom of the marking scale.
Change the position according to the situation.
* When wrinkles are generated on paper, change the position

in the arrow direction A.

* When an image deflection or an image blur is generated in

the paper rear edge section, change the position in the
arrow direction B.
Normally, the hole on the fusing paper guide standard fixing
position is used to fix the fusing paper guide.

A

B

MX-B381/B401  SIMULATION  5 – 1

MX-B401

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.

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

Press CA (Clear all) 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-B381/B401  SIMULATION  5 – 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-B381/B401  SIMULATION  5 – 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 auto document feed unit and the control circuit.

RSPF

2

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

RSPF

3

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

RSPF

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

4

2

Used to check the operations of the sensors and detectors in the paper feed tray, and the control circuit of 
those.

Paper feed tray (Option)

3

Used to check the operations of the loads in the paper feed tray, and the control circuit of those.

Paper feed tray

5

Used to check the operations of the paper feed tray unit paper transport clutch (DTRC).

Paper feed tray unit

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 
section

2

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

Others

3

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

Process (Transfer)

6

Used to check the operation of the fusing separation.

Fusing

51

Used to forcibly cut down the initial fuse of the developer unit and the fusing unit.

Developing, fusing unit

7

1

Used to set the operating conditions of aging.

Others

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)

RSPF

8

1

Used to check and adjust the operations of the developing voltage in each print mode and the control circuit. 
* When the middle speed is adjusted, the low speed are also adjusted simultaneously.

Process (Developing)

2

Used to check and adjust the operation of the main charger grid voltage in each printer mode and the control 
circuit. 
* When the middle speed is adjusted, the low speed are also adjusted simultaneously.

Process (Charging)

6

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

Process (Transport)

9

2

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

Duplex

3

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

Duplex

10

1

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

Process (Developing)

13

-

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

14

-

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

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 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 mis-feed and troubles. 
(When the number of total jam is considerably great, it is judged as necessary for repair.)

3

Used to check mis-feed positions and the mis-feed count of each position. 
* Presumption of the faulty point by this data is possible.

4

Used to check the trouble (self-diag) history.

5

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

Firmware

6

Used to output various adjustment/setting data (simulations, FAX soft switch counter), the firmware version, 
the counter list, the process control data, and SIM50-24 data.

8

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

9

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

Paper feed, ADU

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)

FAX 

12

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

RSPF 

13

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

Process

19

Used to check the values of the counters related to the 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. (If the number of troubles of mis-feed is 
considerably great, the judgment is made that repair is required.)

80

Used to check the operation of paper feed and paper transport in the paper feed section and the paper 
transport section. Used to output the list of the operation status of the sensor and the detectors in the paper 
feed section and the paper transport section.

Paper feed, Paper transport