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MX-M1205  ADJUSTMENTS  5 – 49

(Auto gray balance adjustment by the serviceman)

Copy/printer gray balance and density adjustment (Automatic adjustment) 
(SIM46-74) procedure flowchart

Start

Execute ADJ11B Copy gray balance and density/Printer gray balance and density 
adjustment (automatic adjustment). (SIM46-74)

Set the adjustment pattern on the document table. Select the FACTORY target or the 
SERVICE target, and press [EXECUTE] key. 
(The adjustment pattern is scanned, and the adjustment is automatically performed to 
print the check pattern.) (*1)

Use the test chart (UKOG-0326FCZZ/UKOG-0326FC11) to make a copy in the Text
/Printed Photo mode, and check the copy gray balance and density. 

Use SIM46-16 to print the gray balance check pattern, and check the patch gray 
balance and density. 

Set the adjustment pattern on the document table. Select the FACTORY target or the 
SERVICE target, and press [EXECUTE] key. 
(The adjustment pattern is scanned, and the adjustment is automatically performed to 
print the check pattern.) (*1)

YES

NO

(Copy gray balance and density adjustment (automatic adjustment))

Enter the SIM46-74 mode, and select A4 (11" x 8.5") paper. (Automatic selection)

Press [OK] key. (The initial setting of the halftone image correction is automatically 
performed.) (*2)

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

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

Cancel SIM46-74.

Check the printed check pattern for any streaks or unclear copy. (*4)

Check the printed check pattern for any streaks or unclear copy. (*4)

(Printer gray balance and density adjustment (Automatic adjustment))

Check the copy gray balance and density adjustment result.

Are the gray balance and density 
at the specified level?

Check the printer gray balance and density adjustment result with the self print 
check pattern.

Use SIM64-5 to print the self print 
check pattern, and check the printer 
gray balance and density.

End

Execute ADJ11C(2) (Copy gray balance and 
density adjustment) (Manual adjustment). 
(SIM46-16/44-21) (*3)

Execute ADJ11E(2) (Printer gray balance and 
density adjustment) (Manual adjustment). 
(SIM67-25)

*1:
When the gray balance and 
density are customized and 
registered as the SERVICE 
target, select the SERVICE 
target.

*2: 
If the initial setting of the 
halftone image correction is 
not properly adjusted, 
satisfactory gray balance and 
density cannot be obtained. In 
this case, check the print 
engine for any problems.

*3:
If satisfactory gray balance and 
density are not obtained with 
ADJ11C(2) (Copy gray balance 
and density adjustment) (Manual 
adjustment) (SIM46-16/44-21), 
check the print engine for any 
problems.

*4:
If there is any streak or unclear 
copy on the printed check 
pattern, check the print engine 
for any problems.

Press [EXECUTE] key. (Execute the halftone image correction.)

YES

NO

Are the gray balance and density 
at the specified level?

MX-M1205  ADJUSTMENTS  5 – 50

1)

Enter the SIM46-74 mode.

2)

Press [EXECUTE] key.

The high density process control is performed, and the copy
gray patch image (adjustment pattern) is printed out. 
(A4/11" x 8.5" or A3/11" x 17" paper is automatically selected.)

3)

Set the gray patch image (adjustment pattern) paper printed in
procedure 2) on the document table.

Set the gray patch image (adjustment pattern) printed in the
procedure 2) on the document table. Place the gray patch
image so that the fine lines are on the left side. At that time,
place 5 sheets of white paper on the printed gray patch image
(adjustment pattern).

4)

Select [FACTORY] target, and press [EXECUTE] key.

The copy gray balance adjustment is automatically executed
and prints the gray balance check patch image.

If there is any streak or unclear print on the printed check pat-
tern, check the print engine for any problems.

5)

Press [EXECUTE] key.

The printer gray patch image (adjustment pattern) is printed
out. (A4/11" x 8.5" or A3/11" x 17" paper is automatically
selected.)

Q

O P

N

M

L

K

J

I

H

G

F

E

D

C

B

A

High 
density

Low 
density

MX-M1205  ADJUSTMENTS  5 – 51

6)

Set the gray patch image (adjustment pattern) printed in the
procedure 5) on the document table.

Set the gray patch image (adjustment pattern) printed in the
procedure 2) on the document table. Place the gray patch
image so that the fine lines are on the left side. At that time,
place 5 sheets of white paper on the printed gray patch image
(adjustment pattern).

7)

Select [FACTORY] target, and press [EXECUTE] key.

When the gray balance is customized with the manual gray
balance adjustment (SIM 67-25) according to the user's
request and the gray balance is registered as the service tar-
get with SIM 67-27, if the gray balance is adjusted to that gray
balance, select the [SERVICE] target.

The printer gray balance adjustment (step 1) is automatically
performed and the gray balance check patch image is printed
out.

If there is any streak or unclear print on the printed check pat-
tern, check the print engine for any problems.

8)

The initial setting menu of the halftone image correction is dis-
played. Press [OK] key.

The initial setting of the halftone image correction is per-
formed.

9)

Wait until [EXECUTE] key is displayed. When it is displayed,
press it.

The halftone image correction is performed.

10) When "COMPLETED THIS PROCEDURE" is displayed, the

adjustment operation is completed.

Cancel SIM46-74.

NOTE: The adjustment result becomes valid only when the both

adjustments in the copy mode and in the printer mode are
completed.

For example, if the copy gray balance adjustment (auto-
matic adjustment) is performed and the simulation is can-
celed, the adjustment result is invalid.

11) Check the copy gray balance and density.

(Refer to the item of the copy gray balance and density check.)

When the gray balance and the density are unsatisfactory after
the automatic adjustment by selecting the factory target in pro-
cedure 4), execute the manual gray balance adjustment
(ADJ11C (2)).

Also when the service target is selected in procedure 4) to exe-
cute the automatic adjustment and a satisfactory result is not
obtained, perform the manual gray balance adjustment (ADJ
11C (2)).

12) Check the printer gray balance and density.

(Refer to the item of the printer gray balance and density
check.)

If a satisfactory result on the gray balance and the density is
not obtained with the automatic adjustment, execute the man-
ual adjustment (SIM 67-25) (ADJ 11E (2)).

Also when the service target is selected in procedure 7) to exe-
cute the automatic adjustment and a satisfactory result is not
obtained, perform the manual gray balance adjustment (ADJ
11E (2)).

If the gray balance or density is not in the satisfactory level even
after execution of the automatic and manual adjustments, there
may be another cause.

Troubleshoot the cause, repair or perform necessary works, and
repeat the adjustment from the beginning.

Q

O P

N

M

L

K

J

I

H

G

F

E

D

C

B

A

Bk

1) The max. density section is not blurred.

2) Patch C or D is very slightly copied.

3)  The patch density is identical between patches or not reversed.

The patch density is changed gradually.

High density

Low density

MX-M1205  ADJUSTMENTS  5 – 52

 

This adjustment must be performed in the following cases:

* When a consumable part (developer, OPC drum, transfer belt) is

replaced.

* The CCD unit has been replaced.

* When the scanner (reading) section is disassembled.

* When the scanner (reading) unit is replaced.

* U2 trouble has occurred.

* When the MFP PWB is replaced.

* When the EEPROM on the MFP PWB is replaced.

* The scanner control PWB has been replaced.

* The EEPROM on the scanner control PWB has been replaced.

 

The gray balance adjustment (automatic adjustment) is used to
adjust the copy density automatically.

When this adjustment is executed, the gray balance adjustments of
all the copy modes are revised.

There are following two modes in the auto gray balance adjust-
ment.

1)

Auto gray balance adjustment by the serviceman (SIM 46-24 is
used.)

2)

Auto gray balance adjustment by the user (The user program
mode is used.) (The gray balance target is the service target.)

The auto gray balance adjustment by the user is provided to
reduce the number of service calls.

If the copy gray balance is lost for some reason, the user can
use this gray balance adjustment to recover the balance.

When, however, the machine has a fatal problem or when the
machine condition is greatly changed, this function does not
work effectively.

If the machine condition is dramatically changed, a fatal prob-
lem occurs, or the normal gray targets cannot be obtained, ser-
vice must recalibrate the machine to specification.

To perform the adjustment, the above difference must be fully
understood.