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MX-1800N  ADJUSTMENTS  6 – 53

(Method 2)
By printing the color balance adjustment sheet with SIM 67-25
and comparing each process (CMY) black patch color balance
with the black patch, the color balance adjustment can be
checked more precisely.

(Method 3)
(This method cannot be used when the machine supports only
the GDI mode.)
When the PCL mode is supported, use SIM 64-5 to print the
print test pattern.
Set each set value to the default and touch [EXECUTE] key,
and the print test pattern is printed out.
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.
When the factory target is selected in the procedure 4) and the
auto adjustment is executed but a satisfactory result is not
obtained on the color balance and the density, use SIM 67-26
to change the factory color balance target and repeat the pro-
cedures from 1).
If a satisfactory result is not obtained with the above proce-
dures, execute the manual color balance adjustment (ADJ
20C).
When the service target is selected in the procedure 4) and the
auto adjustment is executed but a satisfactory result is not
obtained, execute the manual color balance adjustment (ADJ
21C).

7) Cancel SIM 67-25.

For the machine which supports only the GDI mode, the
adjustment is completed.

8) Use SIM 44-26 to execute the half tone image correction (forc-

ible execution).
Enter the SIM 44-26 mode, and touch [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))

9)

After completion of the operation, cancel SIM 44-26.

10) Use SIM 64-5 to print the print test pattern and check the print

color balance and the density again.

Set each set value to the default and touch [EXECUTE] key. The
print test pattern is printed out.
If a satisfactory result on the print color balance and the density is
not obtained with the automatic adjustment, execute the manual
adjustment (SIM 67-25) (ADJ 21B).

 

This adjustment is required in the following cases.
* When the copy color balance/density adjustment is required.

Refer to the page of the ADJ print color balance/density adjust-
ment.

* After execution of the copy color balance/density adjustment.

The color balance adjustment (Manual adjustment) is used to
adjust the copy density (15 points for each color) of each color
(CMYK) manually when the automatic adjustment cannot obtain
the specified result or when a fine adjustment is required or when
the user requests to change (customize) the color balance.
In this adjustment, only the patch of each color is adjusted in the
above case where the automatic adjustment cannot obtain the
specified result.
When the color balance is lost, execute the automatic color bal-
ance adjustment in advance and execute this adjustment for better
efficiency.

1)

The copy color balance adjustment must have been completed
properly.

2)

When setting the color patch image adjustment pattern on the
document table, place 5 sheets of white paper on the color
patch image adjustment pattern.

3)

Be sure to use the specified paper for color.

4)

Before execution of the image quality check and the image
quality adjustment, be sure to execute the following correc-
tions forcibly to set the image forming section to the optimum
state.
* Execute the high density image correction (Process correc-

tion) forcibly. (SIM 44-6)

* Execute the half tone image correction forcibly. (SIM 44-26)

Max

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

High density

Low density

C

M

Y

Bk

CMY
mixed
color

3) Patch C or D of each of Y, C, M,

and BK is very slightly copied.

2) Patch A of each of Y, M,

C, and BK are not copied.

4) Patch for each of C, M, Y, BK
• The patch density is identical between patches or not reversed.
• The patch density is changed gradually.

1) The max. density

section is not blurred.

SIMULATION NO.44-26

TEST

HALF TONE DENSITY CORRECT EXECUTION

EXECUTE

0

CLOSE

TOUGH [EXECUTE] THEN EXECUTION START.

K

M

Y

C

SIMULATION NO.44-26

TEST

HALF TONE DENSITY CORRECT EXECUTION

[S_VALUE]

#1: 907, #2: 902, #3: 909, #4:921, #5:936

#6: 347, #7:992, #8:1047, #9:1081, #10:1137

#11:1183, #12:1222, #13:1261, #14:1283,#15:1260

1/1

EXECUTE

CLOSE

0

K

M

Y

C

SIMULATION NO.44-26

TEST

HALF TONE DENSITY CORRECT EXECUTION

[S_VALUE]

#1: ERR, #2: ERR, #3: ERR, #4: ERR, #5: ERR

#6: ERR, #7: ERR, #8: ERR, #9: ERR, #10: ERR

#11: ERR, #12: ERR, #13: ERR, #14: ERR,#15: ERR

1/1

EXECUTE

CLOSE

0

MX-1800N  ADJUSTMENTS  6 – 54

1) Enter the SIM 67-25 mode.

2) Touch [EXECUTE] key. (A3 or 11" x 17" paper is automatically

selected.)
The color balance adjustment pattern is printed.

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

color balance is obtained.
If the above specification is not satisfied, perform 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.

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 touch [OK] key.
The adjustment value is set in the range of 245 – 755 (1 –
999). When SIM 67-24 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 – O to a same level collectively.
Then, adjust each patch density individually. This is an efficient
way of adjustment.
Referring to the black and gray patches, adjust so that each
process (CMY) black/gray patch color balance of A – O
approaches the black/gray patch level as far as possible.

6)

Cancel SIM 67-25.
(For the machine which supports only the GDI mode, the
adjustment is completed.)

7)

Use SIM 64-5 to print the print test pattern.
NOTE: Only for the machine which support the PCL mode.
(For the machine which supports only the GDI mode, this pro-
cedure cannot be used.)
Set each set value to the default and touch [EXECUTE] key.
The print test pattern is printed out.
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.

8)

Use SIM 44-26 to execute the half tone image correction (forc-
ible execution).
Enter the SIM 44-26 mode and touch [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))

EXECUTE

EXECUTE

OK

CLOSE

0

A:

A㧦 xx

B㧦 xx

C㧦 xx

㧧

POINT1

㧧

POINT2

㧧

POINT3

SIMULATION NO.67-25

PRINTER ENGINE COLOR BALANCE MANUAL ADJUSTMENT 㧦PG

xx

㨇

1㨪 99㨉

OK

TEST

K

C

M

Y

EXECUTE

D㧦 xx

㧧

POINT4

0

A:

A㧦 xx

B㧦 xx

C㧦 xx

㧧

POINT1

㧧

POINT2

㧧

POINT3

SIMULATION NO.67-25

PRINTER ENGINE COLOR BALANCE MANUAL ADJUSTMENT 㧦PG

xx

㨇

1㨪 99㨉

OK

TEST

K

C

M

Y

EXECUTE

D㧦 xx

㧧

POINT4

CLOSE

0

A:

A㧦 xx

B㧦 xx

C㧦 xx

㧧

POINT1

㧧

POINT2

㧧

POINT3

SIMULATION NO.67-25

PRINTER ENGINE COLOR BALANCE MANUAL ADJUSTMENT 㧦PG

xx

㨇

1㨪 99㨉

OK

TEST

K

C

M

Y

EXECUTE

D㧦 xx

㧧

POINT4

CLOSE

10-key

or self print end

Max

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

High density

Low density

C

M

Y

Bk

CMY
mixed
color

3) Patch C or D of each of Y, C, M,

and BK is very slightly copied.

2) Patch A of each of Y, M,

C, and BK are not copied.

4) Patch for each of C, M, Y, BK
• The patch density is identical between patches or not reversed.
• The patch density is changed gradually.

1) The max. density

section is not blurred.

SIMULATION NO.44-26

TEST

HALF TONE DENSITY CORRECT EXECUTION

EXECUTE

0

CLOSE

TOUGH [EXECUTE] THEN EXECUTION START.

K

M

Y

C

SIMULATION NO.44-26

TEST

HALF TONE DENSITY CORRECT EXECUTION

[S_VALUE]

#1: 907, #2: 902, #3: 909, #4:921, #5:936

#6: 347, #7:992, #8:1047, #9:1081, #10:1137

#11:1183, #12:1222, #13:1261, #14:1283,#15:1260

1/1

EXECUTE

CLOSE

0

MX-1800N  ADJUSTMENTS  6 – 55

(Abnormal end (Auto transition))

9) After completion of the operation, cancel SIM 44-26.
10) Use SIM 64-5 to print the print test pattern again.

Set each set value to the default and touch [EXECUTE] key.
The print test pattern is printed out.
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.
If the color balance is customized, use SIM 67-27 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.
In the next color balance adjustment, select the service target
color balance in the automatic color balance adjustment mode
to make an adjustment to the similar color balance as the reg-
istered color balance.

a. General
When the automatic color balance adjustment is executed, a cer-
tain color balance (gamma) is used as the target.
There are following three kinds of the target.
• Factory color balance (gamma) target
• Service color balance (gamma) target
• User color balance (gamma) target
In the above three, only the service color balance target can be set
to a desired level.

This adjustment is required in the following cases.
* When the copy color balance/density adjustment (manual adjust-

ment) is executed with SIM 67-25.

* When a U2 trouble occurs.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* When the user requests for customizing the color balance.
* When the service color balance target gamma is judged as

improper.

• Color balance target for the printer color balance adjustment

K

M

Y

C

SIMULATION NO.44-26

TEST

HALF TONE DENSITY CORRECT EXECUTION

[S_VALUE]

#1: ERR, #2: ERR, #3: ERR, #4: ERR, #5: ERR

#6: ERR, #7: ERR, #8: ERR, #9: ERR, #10: ERR

#11: ERR, #12: ERR, #13: ERR, #14: ERR,#15: ERR

1/1

EXECUTE

CLOSE

0

A

Factory color 
balance (gamma) 
target

There are three kinds of the color balance target, 
and each of them is specified according to the 
machine design. Use SIM 67-26 to select one of 
them as the factory target. The default setting 
(factory setting) is the color balance (DEF1) 
which emphasizes color reproduction.

B

Service color 
balance (gamma) 
target

This target is used when the user requests to 
customize the color balance to user’s desired 
level. In advance, the user’s unique color 
balance must be registered as the service color 
balance target. 
The above registration (setting) is made by the 
serviceman with SIM 67-25 to adjust the color 
balance and with SIM 67-27 to register it. 
This color balance target is used when the user 
executes the color balance adjustment. 
When, therefore, the service color balance target 
is changed, the color balance target of the user’s 
color balance adjustment is also changed. 
When, however, SIM 67-28 is executed, the color 
balance is set to the factory color balance target 
set with SIM 67-26. 
The default setting (factory setting) of the color 
balance is same as the factory color balance 
target. (Emphasized on color reproduction 
(DEF1))
If the user does not request for customizing the 
color balance, be sure to use SIM 67-28 to set 
the color balance to the factory color balance 
target.

C

User color 
balance (gamma) 
target

Same color balance as the service color balance 
(gamma) target
When the service color balance target is 
changed, this color balance target is also 
changed accordingly.

MX-1800N  ADJUSTMENTS  6 – 56

• Relationship between the factory target and the service target and the color balance target for the user color balance adjustment in the

printer color balance adjustment (SIM 67-24)

• Factory target in the printer color balance adjustment (SIM 67-24)

By use of SIM 67-26, one of the following color balances can be set as the factory color balance target.
Each of the three color balances cannot be changed. (Fixed)

• Service color balance target in the copy color balance adjust-

ment (SIM 67-28).
For the service color balance target, an optional color balance
can be adjusted with SIM 67-25 and registered with SIM 67-27.
When, however, SIM 67-28 is executed, the color balance is set
to the same balance as the factory color balance target set with
SIM 67-26.

• Color balance target in the user color balance adjustment

This color balance is same as the service color balance target in
the copy color balance adjustment (SIM 67-24). When, therefore,
the service color balance target is changed, this target is also
changed accordingly.

(Meaning of the service color balance target gamma data and
the purpose of registration)
This procedure must be executed only when the color balance is
customized with SIM 67-25.

If the color balance is not customized, this procedure is not
required.
After completion of the customized color balance adjustment (Man-
ual) with SIM 67-25 according to the user's request, use SIM 67-27
to register the service color balance target data by use of the
printed adjustment pattern.
By this procedure, the service color balance target is revised.
It is recommendable to keep the printed adjustment pattern with
SIM 67-25. This adjustment pattern can be used to register the
same color balance target to another machine.
It is also useful to register the service color balance target data.
Do not fold it and keep it under the circumstances which protect it
from discoloration and dirt.
The service color balance target data are basically registered
immediately after the color balance adjustment (Manual) with SIM
67-25.

Factory color balance
target (DEF2)

Factory color balance
target (DEF1)

Factory color balance
target (DEF3)

Factory color balance
target (DEF1)

Service color balance
target

=

Factory color balance
target (one of DEF1 – 3)

Service color balance
target

=

Factory color balance
target (one of DEF1 – 3)

Service color balance
target (Unique)

≠

Use SIM 67-25 to adjust the
optional color balance, and
use SIM 67-27 to register it.

Execute SIM 67-28.
(The service color balance
target is the same as the
factory color balance target.)

Factory setting

Color balance target for
the user color balance
adjustment

Service color balance
target

=

Use SIM 67-26 to select
one of the three kinds of
color balance targets.

Color balance target in the copy color balance
automatic adjustment (SIM 67-24)

Color balance target in the user color balance adjustment

(A)

Factory color balance target (DEF2)

SIM67-28

+b* Direction of Yellow

Hue

+a*

Direction

of Red

Direction

of

Green

Direction of Blue

Factory color balance target (DEF2) =
Service color balance target/Color balance
target for the user color balance adjustment

Factory color
balance target
(DEF1)

SIM67-28

Factory color balance target
(DEF1) = Service color balance
target/Color balance target for the
user color balance adjustment

DEF1

DEF2

Color balance with emphasis on color
reproduction (factory setting)

Color balance with slightly strong Cyan

DEF3

Color balance with emphasis on Cyan

Default

Factory color balance target (DEF3)

SIM67-28

Factory color balance target (DEF3) =
Service color balance target/Color balance
target for the user color balance adjustment