Sharp MX-2600N / MX-3100N / MX-2600G / MX-3100G (serv.man7) Service Manual ▷ View online
MX-3100N ADJUSTMENTS 6 – 48
: '09/Sep
2
6)
Check the color balance and density.
There are following three methods in the color balance and
density check.
(Method 1)
Check to insure that the printed color balance check patch
image is within the following specifications.
There are following three methods in the color balance and
density check.
(Method 1)
Check to insure that the printed color balance check patch
image is within the following specifications.
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.
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.
(Method 2)
By printing the color balance adjustment sheet with SIM 46-21
and comparing each process (CMY) black patch color balance
with the black patch, the color balance adjustment can be
checked more precisely.
By printing the color balance adjustment sheet with SIM 46-21
and comparing each process (CMY) black patch color balance
with the black patch, the color balance adjustment can be
checked more precisely.
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.)
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.)
(Method 3)
Use the servicing color test chart (UKOG-0317FCZZ/UKOG-
0317FC11 or UKOG-0326FCZZ/UKOG-0326FC11) in the Text/
Photo mode (Manual) to check the copy color balance and
density. (Refer to the item of the copy color balance and den-
sity check.)
When satisfactory color balance and density are not obtained
from the automatic adjustment by selecting the factory target in
procedure 4), change the factory color balance target with SIM
63-11 and repeat the procedures from 1).
If a satisfactory result is not obtained with the above proce-
dure, perform the manual color balance adjustment (ADJ
20C).
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 color balance adjustment (ADJ
20C).
Use the servicing color test chart (UKOG-0317FCZZ/UKOG-
0317FC11 or UKOG-0326FCZZ/UKOG-0326FC11) in the Text/
Photo mode (Manual) to check the copy color balance and
density. (Refer to the item of the copy color balance and den-
sity check.)
When satisfactory color balance and density are not obtained
from the automatic adjustment by selecting the factory target in
procedure 4), change the factory color balance target with SIM
63-11 and repeat the procedures from 1).
If a satisfactory result is not obtained with the above proce-
dure, perform the manual color balance adjustment (ADJ
20C).
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 color balance adjustment (ADJ
20C).
7)
Use SIM44-26 to execute the half tone image correction.
(Forcible execution)
Enter the SIM44-26 mode and press [EXECUTE] key.
[EXECUTE] key is highlighted and the operation is started.
(Forcible execution)
Enter the SIM44-26 mode and press [EXECUTE] key.
[EXECUTE] key is highlighted and the operation is started.
Y
M
C
Bk
Q
(Max)
O
P
N
M
L
K
J
I
H
G
F
E
D
C
B
A
High density
Low density
Patch A of each of Y, M, C,
and BK are not copied.
and BK are not copied.
2) Patch C or D of each of Y, M, C,
and BK is very slightly copied.
1) The max. density section is not blurred.
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.
The patch density is changed gradually.
Y
M
C
Bk
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A
Q
(Max)
P
CMY
blend
blend
High density
Low density
Patch A of each of Y, M, C,
and BK are not copied.
and BK are not copied.
2) Patch C or D of each of Y, M, C,
and BK is very slightly copied.
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.
The patch density is changed gradually.
1) The max. density section is not blurred.
2
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MX-3100N ADJUSTMENTS 6 – 49
: '09/Sep
2
It takes several minutes to complete the operation. After com-
pletion of the operation, "COMPLETE" is displayed.
pletion of the operation, "COMPLETE" is displayed.
(Normal end (Auto transition))
(Abnormal end (Auto transition))
After completion of the operation, the simulation is canceled.
8)
Use the servicing color test chart (UKOG-0317FCZZ/UKOG-
0317FC11 or UKOG-0326FCZZ/UKOG-0326FC11) in the Text/
Photo mode (Manual) to check the copy color balance and
density. (Refer to the item of the copy color balance and den-
sity check.)
If the copy color balance and density are not satisfactory, per-
form the following procedures.
0317FC11 or UKOG-0326FCZZ/UKOG-0326FC11) in the Text/
Photo mode (Manual) to check the copy color balance and
density. (Refer to the item of the copy color balance and den-
sity check.)
If the copy color balance and density are not satisfactory, per-
form the following procedures.
9)
Execute the initial setting of the half tone image correction.
(SIM 44-21)
(SIM 44-21)
10) Execute the half tone image correction. (Forcible execution)
(SIM44-26)
11) Use the servicing color test chart (UKOG-0317FCZZ/UKOG-
0317FC11 or UKOG-0326FCZZ/UKOG-0326FC11) in the Text/
Printed Photo mode (Manual) to check the copy color balance/
density. (Refer to the item of the copy color balance and den-
sity check.)
Printed Photo mode (Manual) to check the copy color balance/
density. (Refer to the item of the copy color balance and den-
sity check.)
Though the above procedures 9) - 11) are performed, the copy
color balance and density are not in the specified range, there may
be another cause.
Troubleshoot the cause and repair or perform proper treatments,
and try all the procedures of the print image adjustment from the
beginning.
If the automatic adjustment cannot obtain satisfactory results of the
copy color balance and density, use SIM 46-21 (ADJ 20C) (Manual
adjustment).
color balance and density are not in the specified range, there may
be another cause.
Troubleshoot the cause and repair or perform proper treatments,
and try all the procedures of the print image adjustment from the
beginning.
If the automatic adjustment cannot obtain satisfactory results of the
copy color balance and density, use SIM 46-21 (ADJ 20C) (Manual
adjustment).
20-C
Copy color balance adjustment (Manual
adjustment)
adjustment)
This adjustment is needed in the following situations:
* When a consumable part (developer, OPC drum, transfer belt) is
* 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) section 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.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) section 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.
a. General
The color balance adjustment (Manual adjustment) is used to
adjust the copy density (15 point for each color) of CMYK. This is
used at the following situation. When the result of auto adjustment
described above is not existing within the range of reference. When
a fine adjustment is required. When there is request from the user
for changing (customizing) the color balance.
In this manual adjustment, adjust only the color patch which could
not adjusted properly in the automatic adjustment.
If the color balance is improper, execute the automatic color bal-
ance adjustment in advance, and execute this adjustment for better
efficiency.
The color balance adjustment (Manual adjustment) is used to
adjust the copy density (15 point for each color) of CMYK. This is
used at the following situation. When the result of auto adjustment
described above is not existing within the range of reference. When
a fine adjustment is required. When there is request from the user
for changing (customizing) the color balance.
In this manual adjustment, adjust only the color patch which could
not adjusted properly in the automatic adjustment.
If the color balance is improper, execute the automatic color bal-
ance adjustment in advance, and execute this adjustment for better
efficiency.
b. Note for the color balance adjustment (Manual adjustment)
1)
1)
The print engine section must have been properly adjusted.
2)
The CCD gamma must have been properly adjusted.
3)
Be sure to use the specified paper for color.
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2
MX-3100N ADJUSTMENTS 6 – 50
c. Adjustment procedure
YES
NO
YES
NO
NO
YES
Start
Execute ADJ21B (Copy color balance and density adjustment)
(Manual adjustment). (*1)
(Manual adjustment). (*1)
Enter the SIM46-21 mode, and select A3 (11 " x 17 ") paper.
(Automatic selection)
(Automatic selection)
Press [EXECUTE] key.
(The adjustment check pattern is printed.)
(The adjustment check pattern is printed.)
Refer to the printed adjustment check pattern, and select a
target adjustment color with the color keys (C, M, Y, K).
target adjustment color with the color keys (C, M, Y, K).
Select a target adjustment level with the scroll key.
Enter the adjustment value with 10 key.
Press [EXECUTE] key.
(The adjustment check pattern is printed.)
(The adjustment check pattern is printed.)
Check the patch color balance and density in the process
gray of the color balance check pattern. (If the gray color is
slightly shifted to Magenta, the color balance is properly
adjusted.)
gray of the color balance check pattern. (If the gray color is
slightly shifted to Magenta, the color balance is properly
adjusted.)
Are the color balance
and density at the sati-
sfactory level?
and density at the sati-
sfactory level?
Are the color balance
and density at the sati-
sfactory level?
and density at the sati-
sfactory level?
Are the color balance
and density at the sati-
sfactory level?
and density at the sati-
sfactory level?
Cancel the SIM46-21 mode.
Perform the initial setting of the half tone image correction.
(SIM44-21)
(SIM44-21)
Check the copy color balance and density adjustment result with the
test chart. (*1)
test chart. (*1)
Check to confirm that the initial setting of the half tone image correction is
properly set. (*2)
properly set. (*2)
Perform the initial setting of the half tone image correction.
(SIM44-21)
(SIM44-21)
Perform the half tone image correction. (SIM44-26)
Use the test chart (UKOG-0317FCZZ/UKOG-0317FC11
or UKOG-0326FCZZ/UKOG-0326FC11) to make a copy in
the Text/Printed Photo mode, and check the color balance
and density.
or UKOG-0326FCZZ/UKOG-0326FC11) to make a copy in
the Text/Printed Photo mode, and check the color balance
and density.
Set the service target for the automatic copy color balance
adjustment. (SIM63-7)
adjustment. (SIM63-7)
End
*1:
If satisfactory color balance and density are not
obtained with the adjustment, check the print
engine for any problems.
*2:
If the initial setting of the half tone image
correction is not properly adjusted, satisfactory
color balance and density cannot be obtained. In
this case, check the print engine for any problems.
If satisfactory color balance and density are not
obtained with the adjustment, check the print
engine for any problems.
*2:
If the initial setting of the half tone image
correction is not properly adjusted, satisfactory
color balance and density cannot be obtained. In
this case, check the print engine for any problems.
2
Use the test chart (UKOG-0317FCZZ/UKOG-0317FC11
or UKOG-0326FCZZ/UKOG-0326FC11) to make a copy in
the Text/Printed Photo mode, and check the color balance
and density.
or UKOG-0326FCZZ/UKOG-0326FC11) to make a copy in
the Text/Printed Photo mode, and check the color balance
and density.
2
: '09/Sep
2
MX-3100N ADJUSTMENTS 6 – 51
1)
Enter the SIM46-21 mode.
2)
Press [EXECUTE] key. (A3 or 11" x 17" paper is automatically
selected.)
The color balance adjustment pattern is printed.
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.
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.
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.)
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.
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 245 - 755 (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.
The adjustment value is set in the range of 245 - 755 (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.
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-
0317FCZZ/UKOG-0317FC11 or UKOG-0326FCZZ/UKOG-
0326FC11) and a user's document according 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.)
0317FCZZ/UKOG-0317FC11 or UKOG-0326FCZZ/UKOG-
0326FC11) and a user's document according 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 half tone
image correction.)
image correction.)
It takes several minutes to complete the operation. After com-
pletion of the operation, "COMPLETE" is displayed.
(Normal end (Auto transition))
pletion of the operation, "COMPLETE" is displayed.
(Normal end (Auto transition))
End of print
EXECUTE
10-key
EXECUTE
C
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CMY
Blend
Blend
High density
Low density
3) Patch A of each of Y, M, C,
and BK are not copied.
2) Patch C or D of each of Y, C, M,
and BK is very slightly 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.
The patch density is changed gradually.
1) The max. density section is not blurred.
2
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: '09/Sep
2
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