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MX-4101N  ADJUSTMENTS  5 – 49

NOTE: To execute this adjustment, the following items must have

been properly adjusted.

1)

Prepare the adjustment chart.
The adjustment chart can be made by the following proce-
dures.
Use A4 (11" x 8.5") paper and draw arrow marks vertically and
horizontally on the front and the back surfaces.
At the same time, put marks of the lead edge, the trail edge,
the front end, and the rear end as well as the identification
marks of the front surface and the back surface.

2)

Enter the SIM50-6 mode.

ADJ 15

Scan image magnification ratio adjustment 
(RSPF/DSPF mode)

ADJ 16B

RSPF mode off-center adjustment

ADJ 16C

DSPF mode off-center adjustment

ADJ 15A

Scan image magnification ratio adjustment 
(Main scanning direction) (RSPF mode)

ADJ 15C

Scan image magnification ratio adjustment 
(Main scanning direction) (DSPF mode)

ADJ 15B

Scan image magnification ratio adjustment 
(Sub scanning direction) (RSPF mode)

ADJ 15D

Scan image magnification ratio adjustment 
(Sub scanning direction) (DSPF mode)

ADJ 17

Print area (Void area) adjustment 
(Print engine section)

ADJ 18B

Document scan position adjustment (RSPF mode)

ADJ 18C

Document scan position adjustment (DSPF mode)

F

L

R

FACE

BACK

R

T

F

L

T

Draw arrows.

Draw arrows.

Put the position
marks.

Put the position
marks.

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˖6,'(

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˖/($'B('*(6,'(

&˖

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˖/($'B('*(6,'(

)˖

˖75$,/B('*(6,'(

(˖

˖)5217B5($56,'(

*˖

˖75$,/B('*(6,'(

+˖

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˖6&$1B63(('B63)

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2.

A

SIDE1

Front surface 
document scan 
position 
adjustment 
(CCD)

1 - 99

50

B

SIDE2

Back surface 
document scan 
position 
adjustment 
(CCD)

1 - 99

50

C

Image 
loss 
amount 
setting 
SIDE1

LEAD_EDGE 
(SIDE1)

Front surface 
lead edge 
image loss 
amount setting

0 - 99

20

D

FRONT_REAR 
(SIDE1)

Front surface 
side image loss 
amount setting

0 - 99

20

E

TRAIL_EDGE 
(SIDE1)

Front surface 
rear edge 
image loss 
amount setting

0 - 99

30

F

Image 
loss 
amount 
setting 
SIDE2

LEAD_EDGE 
(SIDE2)

Back surface 
lead edge 
image loss 
amount setting

0 - 99

30

G

FRONT_REAR
(SIDE2)

Back surface 
side image loss 
amount setting

0 - 99

20

H

TRAIL_EDGE 
(SIDE2)

Back surface 
rear edge 
image loss 
amount setting

0 - 99

20

I

OFSET_SPF1

RSPF front 
surface 
document off-
center 
adjustment

1 - 99

50

J

OFSET_SPF2

RSPF back 
surface 
document off-
center 
adjustment

1 - 99

50

K

SCAN_SPEED_SPF1

RSPF 
document front 
surface 
magnification 
ratio adjustment 
(Sub scan)

1 - 99

50

A

SIDE1

Front surface 
document scan 
position 
adjustment 
(CCD)

1 - 99

50

B

SIDE2

Back surface 
document scan 
position 
adjustment 
(CCD)

1 - 99

50

C

Image 
loss 
amount 
setting 
SIDE1

LEAD_EDGE 
(SIDE1)

Front surface 
lead edge 
image loss 
amount setting

0 - 99

20

D

FRONT_REAR
(SIDE1)

Front surface 
side image loss 
amount setting

0 - 99

20

E

TRAIL_EDGE 
(SIDE1)

Front surface 
rear edge 
image loss 
amount setting

0 - 99

30

MX-4101N  ADJUSTMENTS  5 – 50

* Item A, B: When the adjustment value is increased, the scan 

timing is delayed.

* Item C - H: When the adjustment value is increased, the

image loss is increased.

* Item A - H: 1 step = 0.1mm change
* The SPF rear edge image loss is provided for countermea-

sures against shades.

NOTE: When [CLOSE] key is pressed in this simulation mode, the

machine goes into the normal operation mode. Under this
state, copy check can be normally performed. When the
system key is pressed, the machine returns to the simula-
tion mode.

1)

Set the lead edge image loss adjustment values (LEAD EDGE
(SIDE1/SIDE2)) on the front surface and the back surface to
the following values.
(Standard set value)
LEAD EDGE(SIDE 1): 

30 Lead edge image loss set value (Front surface)

LEAD EDGE(SIDE 2): 

30 Lead edge image loss set value (Back surface)

(When the set value is increased, the lead edge image loss is
increased.)
(Change for change in the set value: 0.1mm/step)

2)

Make a duplex copy in 100% in the RSPF/DSPF mode. Check
to confirm that the lead edge image loss is within 3.0

±1.0mm

on the front surface and the back surface. The paper lead
edge must be aligned with the presumed image lead edge.

If the above condition is not satisfied, perform the following
procedure.

3)

Enter the adjustment value of SIDE1/SIDE2 with 10-key, and
press [OK] key.
Adjust so that the paper lead edge is aligned with the pre-
sumed image lead edge.
SIDE1: Front surface lead edge scan position adjustment
SIDE2: Back surface lead edge scan position adjustment
(When the adjustment value is increased, the print image posi-
tion is shifted to the delaying direction for the paper.)
(Change for change in the set value: 0.1mm/step)

Perform the procedures of 2) - 3) until a satisfactory result is
obtained.

1)

Make a duplex copy in 100% in the RSPF/DSPF mode. Check
to confirm that the rear edge image loss is 2.0 - 5.0mm on the
front surface and the back surface.

If the above condition is not satisfied, perform the following
procedure.

2)

Enter the adjustment value of TRAIL EDGE (SIDE1/SIDE2)
with 10-key, and press [OK] key.
TRAIL EDGE (SIDE 1): Rear edge image loss adjustment
value (Front surface)
TRAIL EDGE (SIDE 2): Rear edge image loss adjustment
value (Back surface)
(When the adjustment value is increased, the rear edge image
loss is increased.)
(Change for change in the set value: 0.1mm/step)

Perform the procedures of 1) - 2) until a satisfactory result is
obtained.

F

Image 
loss 
amount 
setting 
SIDE2

LEAD_EDGE 
(SIDE2)

Back surface 
lead edge 
image loss 
amount setting

0 - 99

20

G

FRONT_REAR
(SIDE2)

Back surface 
side image loss 
amount setting

0 - 99

20

H

TRAIL_EDGE 
(SIDE2)

Back surface 
rear edge 
image loss 
amount setting

0 - 99

30

I

OFSET_SPF1

RSPF front 
surface 
document off-
center 
adjustment

1 - 99

50

J

OFSET_SPF2

RSPF back 
surface 
document off-
center 
adjustment

1 - 99

50

K

SCAN_SPEED_SPF1

RSPF 
document front 
surface 
magnification 
ratio (Sub scan)

1 - 99

50

L SCAN_SPEED_SPF2

RSPF 
document back 
surface 
magnification 
ratio (Sub scan)

1 - 99

50

Paper lead edge

Copy image

Image loss
3.0

1.0mm

The paper lead edge must be aligned with
the image lead edge.

Paper rear edge

Copy image

Image loss 2.0 - 5.0mm

MX-4101N  ADJUSTMENTS  5 – 51

1)

Make a duplex copy in 100% in the DSPF mode. Check to
confirm that the image losses on the front frame side and the
rear frame side are 2.0

±2.0mm on the front surface and the

back surface.

If the above condition is not satisfied, perform the following
procedure.

2)

Enter the adjustment value of FRONT/REAR (SIDE 1)/
FRONT/REAR (SIDE 2), and press [OK] key.
FRONT/REAR (SIDE 1) Front/Rear image loss adjustment
value (Front surface)
FRONT/REAR (SIDE 2) Front/Rear image loss adjustment
value (Back surface)
(When the adjustment value is increased, the front/rear image
loss is increased.)
(Change for change in the adjustment value: 0.1mm/step)

Perform the procedures of 1) - 2) until a satisfactory result is
obtained.

 

This adjustment is needed in the following situations:
* When the regist roller section is disassembled.
* When the LSU is replaced or removed.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.

NOTE: This adjustment is performed by the user to increase the

lead edge void area to greater than the standard value
(3mm) in the printer mode.

1)

Enter the simulation 50-5 mode.

2)

Select the set item L with the scroll key, and enter the value
corresponding to the paper feed tray with A4 (11" x 8.5") paper
in it.

Paper F
side edge

Paper R
side edge

Copy image

Copy image

Image loss
2.0

2.0mm

Image loss
2.0

2.0mm

A

DEN-C

Printer lead edge 
image position 
adjustment

1 - 99

30

B

DEN-B

Rear edge void area 
adjustment

1 - 99

30

C

FRONT/REAR

FRONT/REAR void 
area adjustment

1 - 99

20

D

DENB-MFT

Manual feed rear edge 
void area adjustment 
correction value

1 - 99

50

E

DENB-CS1

Tray 1 rear edge void 
area adjustment 
correction value

1 - 99

50

F

DENB-CS2

Tray 2 rear edge void 
area adjustment 
correction value

1 - 99

50

G

DENB-CS3

Tray 3 rear edge void 
area adjustment 
correction value

1 - 99

50

H

DENB-CS4

Tray 4 rear edge void 
area adjustment 
correction value

1 - 99

50

I

DENB-LCC

LCC rear edge void 
area adjustment 
correction value

1 - 99

50

J

DENB-ADU

ADU rear edge void 
area adjustment 
correction value

1 - 99

50

K

MULTI COUNT

Number of print

1 - 999

1

EXECUTE

End of print

EXECUTE

10-key

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2.

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2.

MX-4101N  ADJUSTMENTS  5 – 52

3)

Press [EXECUTE] key.
The adjustment pattern is printed.

4)

Measure the distance from the paper lead edge the adjustment
pattern to the image lead edge, and check to confirm that it is
in the standard adjustment value range.
Standard adjustment value: 3.0 

±2.0mm

If the above requirement is not met, do the following steps.

5)

Select the adjustment target of the paper feed mode adjust-
ment item DENC with the scroll key.

6)

Change the adjustment value.
Enter the adjustment value and press the [OK] key or the
[EXECUTE] key.
When [EXECUTE] key is pressed, the adjustment pattern is
printed.
When the adjustment value is increased, the distance from the
paper lead edge to the image lead edge is increased. When
the adjustment value is decreased, the distance is decreased.
When the set value is changed by 1, the distance is changed
by about 0.1mm.

Repeat the procedures 4) - 6) until the condition of 4) is satisfied.

 

(1) Note before execution of the copy color balance/density
adjustment
* After completion of this adjustment, the printer color balance/

density adjustment must be executed.

* Requisite conditions before execution of the copy color balance/

density adjustment
Before execution of the copy color balance/density adjustment,
check to insure that the adjustments which affect the copy color
balance/density adjustment have been completed.
The importance levels of them are shown below.

(The following items affect the copy color balance/density
adjustment, and must be checked and adjusted before execu-
tion of the image quality adjustments.)
1)

The following adjustment items must be adjusted properly.

(The following items affect the copy color balance/density
adjustment, but it is not required to adjust them frequently.
When, however, a trouble occurs, check and adjust them.)
1)

 The following items must be adjusted properly.

(Relationship between the servicing job contents and the copy
color balance/density adjustment)
Note that the preliminary jobs before execution of the copy color
balance/density adjustment depend on the machine status and the
servicing conditions.
Follow the flowchart of the copy color balance/density adjustment
procedures depending on the actual conditions.
There are following four, major cases.
1)

When installing

2)

When a periodic maintenance is performed.

3)

When a repair, an inspection, or a maintenance is performed.
(When a consumable part is replaced.)

4)

When an installation, a repair, or inspection is performed.
(Without replacement of a consumable part)

L

PAPER

MFT

Tray 
selection

Manual 
paper feed

1 - 6

1

2 (CS1)

CS1

Tray 1

2

CS2

Tray 2

3

CS3

Tray 3

4

CS4

Tray 4

5

LCC

LCC

6

M

DUPLEX

YES

Duplex 
print 
selection

Yes

0 - 1

0

1 (NO)

NO

No

1

3.0

2.0mm

ADJ 

5

Image density 
sensor, image 
registration sensor 
adjustment

ADJ 

5A

Color image sensor 
calibration

44-13

ADJ 

5B

Color image density 
sensor, black image 
density sensor, image 
registration sensor 
adjustment

44-2

ADJ 

6

Image skew adjustment (LSU unit)

64-1/61-4

ADJ 

7

OPC drum phase 
adjustment

ADJ 

7A

OPC drum phase 
adjustment 
(Auto adjustment)

50-22

ADJ 

7B

OPC drum phase 
adjustment 
(Manual adjustment)

44-31

ADJ 

10

Image registration 
adjustment (Print 
engine section)

ADJ 

10A

Image registration 
adjustment 
(Main scanning 
direction, sub 
scanning direction) 
(Auto adjustment)

50-22

ADJ 

10B

Image registration 
adjustment 
(Main scanning 
direction)
 (Manual adjustment)

50-20

ADJ 
10C

Image registration 
adjustment 
(Sub scanning 
direction) 
(Manual adjustment)

50-21

ADJ 

1

Adjust the developing doctor gap

ADJ 

2

Adjust the developing roller main pole position

ADJ 

4

Adjusting high 
voltage values

ADJ 

4A

Adjust the main charger 
grid voltage

8-2

ADJ 

4B

Adjust the developing 
bias voltage

8-1

ADJ 

4C

Transfer voltage 
adjustment

8-6

ADJ 

12

Scan image focus adjustment 
(CCD unit position adjustment)

ADJ 

20A

CCD gamma adjustment 
(CCD calibration)

63-3