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MX-7500N  ADJUSTMENTS AND SETTINGS  5 – 44

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#OPY COLOR BALANCE AND DENSITY ADJUSTMENT -ANUAL ADJUSTMENT  PROCEDURE
FLOWCHART 3)-

3TART

%XECUTE

%NTER

0RESS ;%8%#54%= KEY
4HE ADJUSTMENT CHECK PATTERN IS PRINTED

2EFER TO THE PRINTED ADJUSTMENT CHECK PATTERN AND SELECT A
TARGET ADJUSTMENT COLOR WITH THE COLOR KEYS # - 9 +

3ELECT A TARGET ADJUSTMENT LEVEL WITH THE SCROLL KEY

%NTER

0RESS ;%8%#54%= KEY
4HE ADJUSTMENT CHECK PATTERN IS PRINTED

#HECK THE PATCH COLOR BALANCE AND DENSITY IN THE PROCESS
GRAY OF THE COLOR BALANCE CHECK PATTERN )F THE GRAY COLOR IS
SLIGHTLY SHIFTED TO -AGENTA THE COLOR BALANCE IS PROPERLY
ADJUSTED

!RE THE COLOR BALANCE
AND DENSITY AT THE SATI
SFACTORY LEVEL

!RE THE COLOR BALANCE
AND DENSITY AT THE SATI
SFACTORY LEVEL

!RE THE COLOR BALANCE
AND DENSITY AT THE SATI
SFACTORY LEVEL

#ANCEL THE 3)-  MODE

0ERFORM THE INITIAL SETTING OF THE HALFTONE

#HECK THE COPY COLOR BALANCE AND DENSITY ADJUSTMENT RESULT WITH THE
TEST CHART 

5SE THE TEST CHART 5+/' &#::5+/' &#
TO MAKE A COPY IN THE 4EXT0RINTED 0HOTO MODE AND CHECK
THE COLOR BALANCE AND DENSITY

#HECK TO CONFIRM THAT THE INITIAL SETTING OF THE HALFTONE

0ERFORM THE INITIAL SETTING OF THE HALFTONE

0ERFORM THE HALFTONE

5SE THE TEST CHART 5+/' &#::5+/' &#
TO MAKE A COPY IN THE 4EXT0RINTED 0HOTO MODE AND CHECK
THE COLOR BALANCE AND DENSITY

3ET

%ND

)F SATISFACTORY COLOR BALANCE AND DENSITY ARE NOT
OBTAINED WITH THE ADJUSTMENT CHECK THE PRINT
ENGINE FOR ANY PROBLEMS

)F

MX-7500N  ADJUSTMENTS AND SETTINGS  5 – 45

1) Enter the SIM46-21 mode.

2) Press [EXECUTE] key. (A4/11" x 8.5" or A3/11" x 17" paper is

automatically selected.)
The color balance adjustment pattern is printed.

3) Check that the following specification is satisfied or the color

balance is satisfactory.
If not, execute the following procedures.

The print density must be changed gradually from the lighter
level to the darker level. The density changing direction must
not be reversed.
The density level of each color must be almost at the same
level.

Patch B may not be copied.
Patch A must not be copied.
When, however, the color balance is adjusted according to a
request from the user, there is no need to set to the standard
color balance stated above.
If the color balance of each patch of the process black (CMY
mixed color) is slightly shifted to Magenta, it means that the
adjustment is proper. If the color balance of the adjustment
pattern printed in this mode is slightly shifted to Magenta, it is
converted into the natural gray color balance by the color cor-
rection table in an actual copy mode. (When the color balance
target is DEF 1.)

4)

Select the color to be adjusted with the color select key, and
select the adjustment point with the scroll key.

5)

Enter the adjustment value with 10-key and press [OK] key.
The adjustment value is set in the range of (1 - 999). When
SIM 46-24 is used to adjust the automatic color balance and
density, all the set values of this simulation are set to 500.
To increase the density, increase the adjustment value. To
decrease the density, decrease the adjustment value.
Repeat procedures of 2) - 5) until the condition of 3) is satis-
fied.
When the overall density is low, or when the density is high
and patch A is copied, use the arrow key to adjust all the
adjustment values of A - Q (MAX) to a same level collectively.
Then, adjust each patch density individually. This is an efficient
way of adjustment.
Referring to the black/gray patches, adjust so that each pro-
cess (CMY) black/gray patch color balance of A - Q (MAX)
approaches the black/gray patch level as far as possible.

6)

Make a copy of the servicing color test chart (UKOG-
0326FCZZ/UKOG-0326FC11) and a user's document accord-
ing to necessity in the normal copy mode, the text/Printed
Photo mode (Manual) to check the adjustment result.
(Refer to the item of the copy color balance/density check.)

7)

Execute SIM 44-21. (Execute the initial setting of the halftone
image correction.)

It takes several minutes to complete the operation. After com-
pletion of the operation, "COMPLETE" is displayed.

 End of print

 

EXECUTE

10-key

EXECUTE 

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High 
density

1) The max. density section is not blurred.

2) Patch C or D of each of Y, M, C, and BK is very slightly copied.

Low 
density

CMY
blend

3) Patch for each of Y, M, C, BK

The patch density is identical between patches or not reversed.
The patch density is changed gradually.

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MX-7500N  ADJUSTMENTS AND SETTINGS  5 – 46

(Normal end (Auto transition))

(Abnormal end (Auto transition))

After completion of the operation, the simulation is canceled.
NOTE:
This procedure is to save the copy color balance adjustment
data as the reference data for the halftone correction.
Immediately after execution of ADJ9C (2) (Color balance
adjustment, Manual) with SIM 46-21, be sure to execute this
procedure.
When ADJ9C (1) (Color balance adjustment, Auto) is executed
with SIM 46-24, this procedure is automatically executed.

8) Use SIM 44-26 to execute the halftone image correction.

(Forcible execution)
Enter the SIM 44-26 mode and press [EXECUTE] key.
[EXECUTE] key is highlighted and the operation is started.

It takes several minutes to complete the operation. After com-
pletion of the operation, "COMPLETE" is displayed.

(Normal end (Auto transition))

(Abnormal end (Auto transition))

After completion of the operation, the simulation is canceled.

9)

Make a copy of the servicing color test chart (UKOG-
0317FCZZ/UKOG-0317FC11) and a user's document accord-
ing to necessity in the Text/Printed Photo mode (Manual) and
check the adjustment result again. (Refer to the item of the
copy color balance/density check.)
If the copy color balance and density are not adjusted to the
specified level, there may be another cause.
Troubleshoot the cause, and repair or perform proper treat-
ments, and try all the procedures of the print image adjustment
from the beginning.
NOTE:
If the color balance is customized, use SIM 63-7 to register the
color balance as the service target.
If the color balance is not customized, this procedure is not
required.
If the customized color balance is registered as the service tar-
get, the automatic color balance adjustment can be made in
the next color balance adjustment.

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MX-7500N  ADJUSTMENTS AND SETTINGS  5 – 47

 

a. General
This adjustment is used to execute the fine adjustment in each mode only when a satisfactory image quality is not obtained by the basic adjust-
ments ADJ9B and ADJ9C or there is a request from the user. Normally there is no need to execute this adjustment.
In this adjustment, the adjustment result may be applied to the image send mode and the FAX mode as well as the copy mode.
This must be well understood for execution of the adjustment.

46-01

Color copy density adjustment (for each 
color copy mode) (separately for the low-
density area and the high-density area) 
(No need to adjust normally)

-

-

-

-

-

-

-

-

46-02

Monochrome copy density adjustment (for 
each monochrome copy mode) (separately 
for the low-density area and the high-density 
area) (No need to adjust normally)

-

-

-

-

-

-

-

-

46-04

Color image send mode image density 
adjustment (for each mode) 
(No need to adjust normally)

-

-

-

-

-

-

-

-

46-05

Monochrome image send mode image 
density adjustment (for each mode) 
(No need to adjust normally)

-

-

-

-

-

-

-

-

46-08

Image send mode RGB color balance 
adjustment (separately for the low-density 
area and the high-density area) 
(No need to adjust normally)

-

-

-

-

-

-

-

-

46-09

DSPF mode (Copy/Scan/FAX) density 
adjustment (No need to adjust normally)

-

46-10

Color copy color balance, gamma 
adjustment (for each color copy mode) 
(No need to adjust normally)

-

-

-

-

-

-

-

-

46-16

Monochrome copy density, gamma 
adjustment (for each monochrome copy 
mode) (No need to adjust normally)

-

-

-

-

-

-

-

-

46-19

Automatic monochrome (Copy/Scan/FAX) 
mode document density scanning operation 
(exposure operation) conditions setting 
(Normally no need to set)

-

-

-

-

-

-

-

46-21

Copy color balance and density adjustment 
(Manual adjustment)

-

-

-

-

-

-

46-23

Copy high density image density 
reproduction setting (Normally unnecessary 
to the setting change)

-

-

-

-

-

-

46-24

Copy color balance and density adjustment 
(Automatic adjustment)

-

-

-

-

-

-

46-25

Copy color balance adjustment (Single color 
copy mode) (No need to adjust normally)

-

-

-

-

-

-

-

-

-

46-26

Single color copy mode color balance 
default setting

-

-

-

-

-

-

-

-

-

46-27

Color copy, text, line image reproduction 
adjustment (edge gamma, density 
adjustment) (Text, Map mode) 
(No need to adjust normally)

-

-

-

-

-

-

-

-

46-30

Copy mode sub scanning direction 
resolution setting

-

-

-

-

-

-

-

-

46-32

Document low density image density 
reproduction adjustment in the automatic 
monochrome (Copy/Scan/FAX) mode 
(No need to adjust normally) (Background 
density adjustment in the scanning section)

-

-

-

-

-

-

-

46-36

2-color (red, black) copy mode fine color 
adjustment (No need to adjust normally)

-

-

-

-

-

-

-

-

-

46-37

Monochrome (Copy/Scan/FAX) mode color 
document reproduction adjustment 
(No need to adjust normally)

-

-

-

-

46-38

Color copy mode dark area gradation (black 
component quantity) adjustment 
(No need to adjust normally)

-

-

-

-

-

-

-

-

46-39

FAX send image sharpness adjustment

-

-

-

-

-

-

-

-

-

46-40

FAX send image density adjustment 
(Collective adjustment of all the modes)

-

-

-

-

-

-

-

-

-