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MX-M905  ADJUSTMENTS  5 – 85

 

This adjustment is required in the following cases:

* When the DSPF CCD unit is replaced.

* When a U2 trouble occurs.

* When the DSPF control PWB is replaced.

1)

Check to insure that there is no dirt or dust on the DSPF scan-
ning glass, the mirror, and the lens surface. (If there is, clean it
with alcohol.)

2)

Check to confirm that the patches in BK1 and BK2 arrays of
the SIT chart (UKOG-0356) are free from dirt and scratches.

If they are dirty, clean them.

If they are scratched or streaked, replace with new one.

NOTE:

Since the SIT chart is easily discolored by sunlight (especially ultra-
violet rays) and humidity and temperature, put it in a bag such as a
clear file) and store in a dark place of low temperature and low
humidity.

1)

Set the SIT chart (UKOG-0356) face-down in the DSPF paper
feed tray.

If the SIT chart is not available, execute SIM 63-5 to set the
CCD gamma to the default. In this case, however, the adjust-
ment accuracy is lower when compared with the adjustment
method using the SIT chart.

2)

Enter the SIM 63-3 mode.

3)

When a color key is selected, the adjustment value of the
selected color is displayed.

* When [B] (Blue), [G] (Green), or [R] (Red) key is selected,

the selected key is highlighted and the adjustment value of
the selected color is displayed.

* Only one color key can be selected, and the selected key is

highlighted. In the initial state, [B] is selected.

* If there is a page over [

], an active display is shown and the

page moves up. If there is no page upward, the display
grays out and the operation is invalid.

If there is a page under [

], an active display is shown and

the page moves down. If there is no page downward, the
display grays out and the operation is invalid.

4)

When [DSPF] key is pressed, it is highlighted, and the color
automatic adjustment execution screen is displayed.

5)

Press [EXECUTE] key and it is highlighted and the color auto
adjustment is executed.

* When [EXECUTE] key is pressed during the automatic

adjustment, the automatic adjustment is interrupted.

6)

After normal completion, the result of calculation is displayed
in the initial screen.

* When an error occurs in execution, the following screen is dis-

played.

* When an error occurs in the automatic adjustment, all the error

patch numbers are displayed.

When [RESULT] key is pressed, the display returns to the initial
screen. (The previous value is displayed)

* When the operation is completed normally, "COMPLETE" is dis-

played. When [RESULT] key is pressed, the display returns to
the initial screen. (The calculation result of normal completion is
displayed.)
 

OC 
SHADING

OC analog correction level correction, and shading 
correction data making (Document table mode)

DSPF 
SHADING

Analog correction level correction, and shading correction 
data making (DSPF mode)

COMPLETE

Normal completion

ERROR

Abnormal completion

INCOMPLETE

Incomplete, interruption

MX-M905  SIMULATION  6 – 1

MX-M905

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 to efficiently setup and adjust the machine
for improved serviceability.
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.

There are two simulation modes.
* Easy mode:

Displays commonly used simulations for each category, allowing
easy access for technicians to change settings, perform mainte-
nance and adjustments.

* Classic mode:

All simulations are listed and can be accessed by entering the
main code, then sub code as per previous model series.

Entering the simulation mode.
1) Double-click the HOME key
2) Touch the Ver display section (10-key mode input mode

screen)

3)

Touch the (#) key → Asterisk (*) key → Clear key → Asterisk
(*) key → Ready for input of main code of simulation. 

1

TEST key

Change test mode

2

Mode setting key

Change Easy mode, Classic mode

3

Language setting key

Change language in simulation mode

4

INFO key

Display operation of current display

5

EXIT key

Exit from simulation mode

6

BACK key

Back to the previous display

7

Clear key

Clear input value

1

2 3 4

5

6

7

Ver

MX-M905  SIMULATION  6 – 2

1

1

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

Scanner (reading)

Operation test/check

2

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

Scanner (reading)

Operation test/check

5

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

Scanner (reading)

Operation test/check

2

1

Used to check the operations of the auto document feed unit and the control circuits.

DSPF

Operation test/check

2

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

DSPF

Operation test/check

3

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

DSPF

Operation test/check

6

Used to check the operation of the scanner fan motor.

Scanner (reading)

Operation test/check

3

2

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

Finisher

Operation test/check

3

Used to check the operations of the motors and the solenoids in the finisher and the control 
circuits.

Finisher

Operation test/check

10

Used to adjust the jogger position, the lead edge stopper position, the staple jogging count 
number, and the paper folding count number.

Finisher

Finisher adjustment

30

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

Inserter

Operation test/check

31

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

Inserter

Operation test/check

40

Used to check the operations of the sensors and the detectors in the paper folding unit and the 
related circuits.

Paper folding unit

Operation test/check

41

Used to check the operations of the motors and the solenoids in the paper folding unit and the 
control circuits.

Paper folding unit

Operation test/check

42

Paper folding unit adjustment

Paper folding unit

Adjustment

50

Decurler sensor check

Decurler

Operation check

51

Decurler individual load check

Decurler unit

Operation check

4

2

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

Large capacity tray 
(LCC)

Operation test/check

3

Used to check the operations of the loads in the desk/large capacity tray (LCC) and the control 
circuits.

Desk/Large capacity 
tray

Operation test/check

5

Used to check the operations of the transport clutch (LTRC) in the LCC and the monitor.

Large capacity tray 
(LCC)

Operation test/check

10

LCT warm air heater temperature setting

LCT

Setting

11

LCT fan Duty setting

LCT

Setting

14

LCT temperature and humidity sensor monitor display

LCT

Check

5

1

Used to check the operations of the display lamp and the LCD on the operation panel and the 
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 operations of the copy lamp and the control circuit.

Scanner/DSPF 
(reading)

Operation test/check

4

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

Process

Operation test/check

6

1

Paper transport, 
paper exit

Operation test/check

2

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

Operation test/check

3

Used to check the operations of the primary transfer separation.

Process (transfer)

Operation test/check

4

Used to check the operation of the MC cleaner.

Process (charging)

Operation test/check

90

Used to reset the machine to the factory setting. (The scanner is set to the lock enable position)

Scanner

Setting

7

1

Used to set the conditions of aging operation.

Setting

6

Used to set the intermittent aging cycle.

Setting

8

Used to display the warm-up time.

Operation display

12

Used to set the document scan quantity. (For development and inspection)

Operation test, check

8

1

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

Process 
(Development)

Operation test/check/
adjustment

2

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

Process

Operation test/check/
adjustment

6

Used to check and adjust the operation of the transfer plus bias current and the control circuit.

Process (transfer)

Operation test/check/
adjustment

9

2

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

Duplex

Operation test/check

3

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

Duplex

Operation test/check

10

1

Used to check the operation of the toner motor and the control circuit.

Process 
(Development)

Operation test/check

2

Used to check the operation of the toner hopper empty sensor.

Process 
(Development)

Operation test/check

4

Use to check the toner cartridge motor rotation sensor.

13

-

Used to cancel the self diag U1 trouble.

Cancel (trouble, etc.)

14

-

Used to cancel the self diag H3/H4/H5 troubles.

Fusing

Cancel (trouble, etc.)

15

-

Use to cancel the trouble (F3-12,22/U6-09,29,39,63,69)

LCC

Cancel (trouble, etc.)

16

-

Used to cancel the self diag U2 trouble.

MFPcnt PWB/PCU 
PWB/SCU PWB

Cancel (trouble, etc.)

MX-M905  SIMULATION  6 – 3

21

1

Used to set the maintenance cycle.

Setting

22

1

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

Adjustment, setting, 
operation data output 
and check

2

Used to check the total number of misfeed and trouble. (If the total number of JAM is 
considerably great, it is judged that repair is required.)

Adjustment/Setting/
Operation data check

3

Used to check the misfeed position and the number of misfeed. * This data can be used to 
estimate the trouble position.

Adjustment/Setting/
Operation data check

4

Used to check the trouble (self diag) history.

Adjustment/Setting/
Operation data check

5

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

Other

6

Used to output the list of various setting and adjustment data (simulation, FAX soft switch, 
counter).

Adjustment/Setting/
Operation data check

8

Used to check the counter value of the finisher, DSPF, and the scan (reading).

Adjustment/Setting/
Operation data check

9

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

Paper feed, ADU, 
LCC

Adjustment/Setting/
Operation data check

10

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

Adjustment/Setting/
Operation data check

11

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

FAX 

Adjustment/Setting/
Operation data check

12

Used to check the  DSPF misfeed position and the number of each misfeed. 
(If the number of misfeed is considerably great, it is judged that repair is required.)

DSPF Adjustment/Setting/

Operation data check

13

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

Adjustment/Setting/
Operation data check

14

Used to display the use status of the toner cartridge.

Process

Adjustment/Setting/
Operation data check

18

Used to display the user data delete history.

Adjustment/Setting/
Operation data check

19

Used to check the various scanner counters related to the network scanner.

Adjustment/Setting/
Operation data check

40

Used to display the error code list and the contents.

Error contents 
display

41

Purpose JAM code contents display.

Used to display the 
JAM code list and the 
contents.

42

Used to check the JAM/trouble data

Adjustment/Setting/
Operation data check

43

JAM data details display

Adjustment/Setting/
Operation data check

90

Used to output the various setting data.

Adjustment/Setting/
Operation data check

23

2

Used to print the paper jam, misfeed, and the trouble history. (If the number of misfeed or the 
troubles is considerably great, it is judged that repair is required.)

Adjustment/Setting/
Operation data check

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

Operation test/check

81

Used to export paper feed time list.

24

1

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

Data clear

2

Used to clear the counter value (print quantity) in each paper feed section.

Data clear

3

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

Data clear

4

Used to clear the drum counter value of the maintenance counter, the transfer, and the fusing 
web cleaning feed counter. (After completion of maintenance, the counters are cleared.)

Data clear

5

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

Data clear

6

Used to clear the copy counter value.

Data clear

9

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

Data clear

10

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

Data clear

12

Used to clear the document filing counter.

Data clear

15

Clearing counters related to the network scanner

Data clear

35

Used to clear the toner cartridge use status data.

25

1

Used to check the operation of the developing section.

Process 
(developing section)

Operation test/check

2

Used to initialize the toner density when replacing developer. (Automatic adjustment)

Process 
(Developing section)

Setting

4

Used to display the operation data of the toner supply quantity. (Not used in the market.)

Process

Adjustment/Setting/
Operation data check

10

Developer/drum serial number setting.

26

2

Used to set the  paper size of the tandem tray/large capacity paper feed tray (LCC). (When the 
paper size is changed, this simulation must be used to change the paper size on the software.)

Paper feed

Setting

3

Used to set the auditor specification mode.Sim.26-3 is described in the service manual for the 
convenience sake, but the coin vendors of the machines destined for overseas are not 
guaranteed. 

Auditor

Setting