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MX-C250  SIMULATION  6 – 47

1) Set the original on the original table.

2) Select an item to be set with Arrow keys.

3) Press [OK]/[START] key

When [START] key is pressed, the adjustment value is set and
the scanned document image is outputted.

46-43

:

Adjustment/Setup

Used to adjust the FAX send image density.
(Super Fine)

1) Set the original on the original table.

2) Select an item to be set with Arrow keys.

3) Press [OK]/[START] key

When [START] key is pressed, the adjustment value is set and
the scanned document image is outputted.

46-51

:

Adjustment/Setup

Used to adjust the gamma for the copy
mode heavy paper mode and the image
process mode. (Manual adjustment)

1) Select a target adjustment mode with 10keys.

2) Select an adjustment target color with [OK]/[START] key.

3) Select a target adjustment density level with Arrow keys.

4) Enter the set value with 10 keys.

5) Press [OK]/[START] key

When COPY key is pressed, the adjustment pattern is printed.

When the image density is insufficient or a background copy is
made in heavy paper copy, change this adjustment value to adjust
the image density.

46-52

:

Adjustment/Setup

Used to reset the copy color balance
adjustment (adjustment for each dither) to
the default value. 

1) Select an item to be reset to the default (for each dither) with 10

keys.

To reset the adjustment values of all the items, select [ALL].

2) Press [OK]/[START] key

46-54

:

Adjustment

Used to reset the copy color balance
adjustment (auto adjustment for each
dither).

Operation/Procedure
The color balance, the density, and the gradation are adjusted for
the monochrome mode, the heavy paper mode, the text, and the
line image edges.
This simulation is used to improve image quality in these modes
and images.

1) Press [OK]/[START] key. (A4 or 11" x 8.5" paper is automatically

selected.) The color patch image (adjustment pattern) is printed.

2) Set the color patch image (adjustment pattern) printed in the

procedure 1) on the document table so that the thin lines on the
printed color patch image (adjustment pattern) are on the left
side. Place 5 sheets of white paper on the printed color patch
image (adjustment pattern).

3) Press [OK]/[START] key.

1

AE(PHOTO ON)

Automatic expo-
sure value (Fine/
HT)

1 - 99

50

2

AE(PHOTP OFF)

Automatic expo-
sure value (Fine)

1 - 99

50

3

MANUAL(PHOTO ON)

Manual exposure 
value (Fine/HT)

1 - 99

50

4

MANUAL(PHOTO 
OFF)

Manual exposure 
value (Fine)

1 - 99

50

1

AE(PHOTO ON)

Automatic expo-
sure value (Super 
fine/HT)

1 - 99

50

2

AE(PHOTP OFF)

Automatic expo-
sure value (Super 
fine)

1 - 99

50

3

MANUAL(PHOTO ON)

Manual exposure 
value (Super fine/
HT)

1 - 99

50

4

MANUAL(PHOTO 
OFF)

Manual exposure 
value (Super fine)

1 - 99

50

1

HEAVYPAPER K

Copier heavy paper K

2

HEAVYPAPER C

Copier heavy paper C

3

HEAVYPAPER M

Copier heavy paper M

4

HEAVYPAPER Y

Copier heavy paper Y

5

DITHER1 K

Color error diffusion K

6

DITHER1 C

Color error diffusion C

7

DITHER1 M 

Color error diffusion M

8

DITHER1 Y

Color error diffusion Y

9

DITHER2

Monochrome error diffusion

10

DITHER3

Monochrome dither (600dpi)

1

POINT1

Point 1

1 - 255

128

2

POINT2

Point 2

1 - 255

128

3

POINT3

Point 3

1 - 255

128

4

POINT4

Point 4

1 - 255

128

5

POINT5

Point 5

1 - 255

128

6

POINT6

Point 6

1 - 255

128

7

POINT7

Point 7

1 - 255

128

8

POINT8

Point 8

1 - 255

128

9

POINT9

Point 9

1 - 255

128

10

POINT10

Point 10

1 - 255

128

11

POINT11

Point 11

1 - 255

128

12

POINT12

Point 12

1 - 255

128

13

POINT13

Point 13

1 - 255

128

14

POINT14

Point 14

1 - 255

128

15

POINT15

Point 15

1 - 255

128

16

POINT16

Point 16

1 - 255

128

17

POINT17

Point 17

1 - 255

128

Dither

ALL

All dither values

Heavy Paper

Dither values for heavy paper

Color ED

Dither values for color mode

B/W ED

Dither values for the monochrome mode

B/W 600dpi

Dither values for the monochrome 600dpi 
mode

MX-C250  SIMULATION  6 – 48

The color balance adjustment is automatically performed.
The adjustment pattern is printed out. Check it for any abnor-
mality.

4) Press [OK]/[START] key.

The list of the adjustment items (for each dither) is displayed.

5) Select an adjustment item (for each dither).

6) Press [OK]/[START] key. (A4 or 11" x 8.5" paper is automatically

selected.)

The color patch image (adjustment pattern) is printed out.

7) Set the color patch image (adjustment pattern) printed in the

procedure 6) on the document table so that the thin lines on the
printed color patch image (adjustment pattern) are on the left
side. Place 5 sheets of white paper on the printed color patch
image (adjustment pattern).

8) Press [OK]/[START] key.

The color balance adjustment is automatically performed.
The adjustment pattern is printed out. Check it for any abnor-
mality.

9) When [OK]/[START] key is pressed, the adjustment result is

registered and the adjustment mode is terminated. When [EXE-
CUTE] key is pressed, the adjustment result is registered and
the screen is shifted to the other item (Mode/Image) select
menu.

To execute the adjustment of the other item (Mode/Image),
press [EXECUTE] key.
After completion of all the adjustments of the items (Mode/
Image), press [OK]/[START] key, and the adjustment results
are registered.

10)Make a copy, and check the copy image quality.

48-1

:

Adjustment

Used to adjust the scan image magnifica-
tion ratio (in the main scanning direction
and the sub scanning direction).

1) Enter the set value with 10 keys.

2) Press [OK]/[START] key. 

The set value in step 1) is saved.

When the adjustment value is increased, the image magnification
ratio is increased.
A change of "1" in the adjustment value of item 1, 3, or 5 corre-
sponds to a change of about 0.02% in the copy magnification ratio.
A change of "1" in the adjustment value of item 2, 4, or 6 corre-
sponds to a change of about 0.1% in the copy magnification ratio.

48-6

:

Adjustment

Used to adjust the rotation speed of each
motor.

1) Select an item to be set with Arrow keys.

2) Enter the set value with 10 keys.

3) Press [OK]/[START] key. 

The set value in step 2) is saved.

When the adjustment value is increased, the speed is increased,
and vice versa. A change of 1 in the adjustment value corresponds
to a change of about 0.1% in the speed.

49-1

:

Used to perform the firmware update.

1) Save the firmware to the USB flash drive.

2) Insert the USB flash drive into the main unit.

3) Select a target firmware file for update.

Press Arrow key to select all the Firmware collectively.

4) Press [OK]/[START] key.

5) Press [OK]/[START]  key.

The selected firmware is updated.
When the operation normally completed, "COMPLETE" is dis-
played. When terminated abnormally, "ERROR" is displayed.

1

CCD (MAIN)

SCAN main scanning mag-
nification ratio adjustment 
(CCD)

1 - 99

50

2

CCD (SUB)

SCAN sub scanning magni-
fication ratio adjustment 
(CCD)

1 - 99

50

3

SPF (MAIN)

RSPF document front sur-
face magnification ratio 
(Main scan)

1 - 99

50

4

SPF  (SUB)

RSPF document front sur-
face magnification ratio 
(Sub scan)

1 - 99

50

5

SPFB (MAIN)

RSPF document back sur-
face magnification ratio 
(Main scan)

1 - 99

50

6

SPFB (SUB)

RSPF document back sur-
face magnification ratio 
(Sub scan)

1 - 99

50

COLOR

FUM

Drum motor correction value

1

99

56

DVM

Drum motor correction value

1

99

56

DM

Drum motor correction value

1

99

56

C2MM

2CStransport motor correction value 

1

99

56

MONO

FUM

Fusing motor correction value

1

99

56

DM

Drum motor correction value

1

99

56

HEAVY

FUM

Drum motor correction value

1

99

54

DVM

Drum motor correction value

1

99

56

DM

Drum motor correction value

1

99

56

MX-C250  SIMULATION  6 – 49

49-2

:

Used to perform the FPGA update.

1) Save the FPGA file to the USB flash drive.

2) Insert the USB flash drive into the main unit.

3) Select a target FPGA file for update.

Press Arrow key to select all the FPGA collectively.

4) Press [OK]/[START] key.

Right after pressing the button, the selected firmware is started
to be updated.

5) Turn OFF and ON the power of the machine.  .

When the operation normally completed, "COMPLETE" is dis-
played. When terminated abnormally, "ERROR" is displayed.

50-1

:

Adjustment

Copy image position, image loss adjust-
ment

1) Select an item to be set with Arrow keys.

2) Enter the set value with 10 keys.

Set the items other than RRCA, LEAD, and SIDE to the
default.
RRCA: Image lead edge reference position adjustment
LEAD: Lead edge image loss adjustment
SIDE: Side image loss adjustment

3) Press [OK]/[START] key. The set value in step 2) is saved.

1. (RRC-A) Timing from starting document scanning to specifying
the image lead edge reference is adjusted. (01.mm/step)

* When the value is decreased, the timing is advanced. When

the value is increased, the timing is delayed.

2 - 5. (RRC-B) Timing of paper (resist roller ON) for the image posi-
tion on the transfer belt is adjusted. (0.1mm/step)

* When the value is decreased, the timing is delayed. When

the value is increased, the timing is advanced.

6. (LEAD) The lead edge image loss amount is adjusted. (0.1mm/
step)

* When the value is increased, the image loss is increased.

7. (SIDE) The side image loss amount is adjusted.

* When the value is increased, the image loss is increased.

(0.1mm/step)

8. (DEN-A) The paper lead edge void amount is adjusted. (0.1mm/
step)

* When the value is increased, the void is increased.

9 (DEN-B) The paper rear edge void amount is adjusted. (0.1mm/
step)

* When the value is increased, the void is increased.

10. (FRONT/REAR) The void amount on the right and left edges of
paper is adjusted. (0.1mm/step)

1

Lead edge 
adjustment 
value

RRCA

Document lead edge 
reference position 
(OC)

0 - 99

50

2

RRCB-
CS1

Resist 
motor 
ON tim-
ing
adjust-
ment

Stan-
dard 
Tray

1 - 99

40

3

RRCB-
DSK

Desk 

1 - 99

42

4

RRCB-
MFT

Manual 
paper 
feed

1 - 99

50

5

RRCB-
ADU

ADU

1 - 99

50

6

Image loss 
area setting 
value

LEAD

Lead edge image 
loss area setting

0 - 99

10

7

SIDE

Side image loss 
area adjustment

0 - 99

10

8

Void area 
adjustment

DENA

Lead edge void area 
adjustment

1 - 99

40

9

DENB

Rear edge void area 
adjustment

1 - 99

35

10

FRONT/
REAR

FRONT/REAR void 
area adjustment

1 - 99

35

11

Off-center 
adjustment

OFSET_
OC

OC document off-
center adjustment

1 - 99

50

12

Magnifica-
tion ratio cor-
rec-tion

SCAN_
SPEED_
OC

SCAN sub scanning 
magnification ratio 
adjustment (CCD)

1 - 99

50

13

Sub scan-
ning direction 
print area 
correction 
value

DENB-
MFT

Manual feed correc-
tion value

1 - 99

50

14

DENB-
CS1

Tray 1 correction 
value

1 - 99

50

15

DENB-
CS2

Tray 2 correction 
value

1 - 99

50

16

DENB-
ADU

ADU correction 
value

1 - 99

50

MX-C250  SIMULATION  6 – 50

50-5

:

Adjustment

Used to adjust the print lead edge image
position. (PRINTER MODE)

1) Select a target adjustment item (DEN-C) with Arrow key.

2) Enter the adjustment value using the 10 keys.

3) Press [OK]/[START] key.

The set value is saved, and the adjustment check 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 reference value: 4.0 +/- 2.0mm

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 distanced is decreased.
When the set value is changed by 1, the distance is changed by
about 0.1mm.

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 from the paper lead edge to the image lead edge is decreased.
When the set value is changed by 1, the distance is changed by about 0.1mm.

50-6

:

Adjustment

Used to adjust the copy image position and
the image loss. (RSPF mode)

RSPF

1) Select an item to be set with 10 keys.

2) Enter the set value with 10 keys.

3) Press [OK]/[START] key. 

The set value in step 2) is saved.

Item 1, 2: When the adjustment value is increased, the scan timing
is delayed.
Item 3 - 8: When the adjustment value is increased, the image loss
is increased.
Item 1 - 8: 1 step = 0.1mm change

1

DEN-C

Used to adjust the print 
lead edge image posi-
tion. 
(PRINTER MODE)

1 - 99

50

Adjustment value too align the print lead edge for the printer. When the 
adjustment value of this item is decreased by 1, the printer print start position 
in the paper transport direction is shifted to the lead edge by 0.1mm.

2

DEN-B

Rear edge void area 
adjustment

1 - 99

40

Void amount generated at the paper rear edge. When the adjustment value 
of item B (DEN-B) is decreased by 1, the print area adjustment value in the 
sub scanning direction for the paper transport direction is decreased by 
0.1mm.

3

FRONT/REAR

FRONT/REAR void area 
adjustment

1 - 99

35

Adjustment of the void amount generated on the left and right edges of 
paper. When the adjustment value is increased, the void amount is 
increased.

4

DENB-MFT

Manual feed rear edge 
void area adjustment 
correction value

1 - 99

50

Fine adjustment value of each paper feed source for the adjustment value of 
DEN-B

5

DENB-CS1

Tray 1 rear edge void 
area adjustment correc-
tion value

1 - 99

50

6

DENB-CS2

Tray 2 rear edge void 
area adjustment correc-
tion value

1 - 99

50

7

DENB-ADU

ADU rear edge void aria 
adjustment correction 
value

1 - 99

50

1

SIDE1

Front surface 
document scan 
position adjust-
ment (CIS)

1 - 99

50

2

SIDE2

Back surface doc-
ument scan posi-
tion adjustment 
(CIS)

1 - 99

50

3

Image 
loss
amount 
setting 
SIDE1

LEAD_EDGE 
(SIDE1)

Front surface 
lead edge image 
loss amount set-
ting

0 - 99

10

4

FRONT_REAR
(SIDE1)

Front surface side 
image loss 
amount setting

0 - 99

10

5

TRAIL_EDGE 
(SIDE1)

Front surface rear 
edge image loss 
amount setting

0 - 99

35

6

Image 
loss
amount 
setting 
SIDE2

LEAD_EDGE 
(SIDE2)

Back surface lead 
edge image loss 
amount setting

0 - 99

10

7

FRONT_REAR
(SIDE2)

Back surface side 
image loss 
amount setting

0 - 99

10

8

TRAIL_EDGE 
(SIDE2)

Back surface rear 
edge image loss 
amount setting

0 - 99

35